| Entries |
| Document | Title | Date |
|---|
| 20080205515 | Video encoding with reduced complexity - A method for encoding frames of input video signals, including the following steps: implementing a learning/configuring stage that includes the following steps: providing frames of training video signals; determining training statistical parameters for groups of pixels of the frames of training video signals, and also encoding the frames of training video signals to obtain training modes; configuring a decision tree in response to the training statistical parameters and the training modes; and implementing an operating/encoding stage that includes the following steps: determining operating statistical parameters for groups of pixels of the frames of input video signals, and applying the operating statistical parameters to the configured decision tree to obtain operating modes; and encoding the frames of input video signals using the frames of input video signals and the operating modes. | 08-28-2008 |
| 20080212673 | Systems and Methods for Adaptively Determining I Frames for Acquisition and Base and Enhancement Layer Balancing - The invention includes apparatus, systems and methods for processing multimedia data. A method of processing multimedia data may include encoding a frame of the multimedia data as an I frame, a channel switch frame, and a P frame and selecting the encoded I frame if a size of the encoded I frame and a size of the encoded channel switch frame and the encoded P frame meet a first condition. An apparatus for processing multimedia data may include an encoder for encoding a frame of the multimedia data as an I frame, a channel switch frame, and a P frame and selecting the encoded I frame if a size of the encoded I frame and a size of the encoded channel switch frame and the encoded P frame meet a first condition. | 09-04-2008 |
| 20080225943 | SINGLE PASS VARIABLE BIT RATE CONTROL STRATEGY AND ENCODER FOR PROCESSING A VIDEO FRAME OF A SEQUENCE OF VIDEO FRAMES - An encode control strategy is provided for variable bit rate encoding of a sequence of video frames in a single pass. The control strategy includes determining whether a video frame has a complexity level statistically outside a defined range from a complexity level of at least one preceding frame of the sequence of video frames, and if so, determining a new average bit rate target for the video frame. The new average bit rate for the video frame is determined employing at least one of spatial complexity and temporal complexity of the video frame. The new average bit rate target for the video frame is used to set frame level bit rate control parameter(s), and the video frame is encoded using the set frame level bit rate control parameter(s). | 09-18-2008 |
| 20080232463 | Fast Intra Mode Prediction for a Video Encoder - There are provided video encoders and corresponding methods for encoding video data for an image that is divisible into macroblocks. A video encoder includes an encoder for performing inta mode selection when encoding a current macroblock by testing a first subset of intra modes to compute a rate distortion cost, and utilizing the rate distortion cost to determine whether to terminate the intra mode selection and which additional intra modes, if any, are to be examined with respect to the current macroblock. | 09-25-2008 |
| 20080232464 | Transcoding system using encoding history information - The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder. | 09-25-2008 |
| 20080240233 | ENTROPY CODING FOR VIDEO PROCESSING APPLICATIONS - An entropy coding apparatus. In a specific embodiment, the entropy coding apparatus, includes a renormalization process and an encode-decision process that communicates with the renormalization process. The encode-decision process is adapted to run in parallel with the renormalization process without the renormalization process being nested therein. In a more specific embodiment, the entropy coding apparatus includes an entropy encoder that is H.264 compliant. The encode-decision process includes a first .mechanism for pre-computing certain parameters to eliminate the need to nest the renormalization process within the encode-decision process. The renormalization process and the encode-decision process are components of a Context Adaptive Binary Arithmetic Coding (CABAC) module. | 10-02-2008 |
| 20080240234 | HIGH SPEED CONTEXT MEMORY IMPLEMENTATION FOR H.264 - Disclosed is a context modeller ( | 10-02-2008 |
| 20080247459 | Method and System for Providing Content Adaptive Binary Arithmetic Coder Output Bit Counting - A process may be utilized for encoding MBs. The process records a plurality of CABAC weight values for a first MB. The first MB resides in a first edge of a first frame in a plurality of images. Further, the process encodes the first MB with the plurality of CABAC weight values. In addition, the process initializes a second frame in the plurality of the images with the plurality of CABAC weight values. Finally, the process encodes a second MB with the plurality of CABAC weight values. The second MB resides in a second edge of a second frame in the plurality of images. | 10-09-2008 |
| 20080247460 | Method and Apparatus For Scalable Video Adaption Using Adaption Operators For Scalable Video - An apparatus for and method of adapting a bitstream to which scalable video coding (SVC) technology is applied are provided. The apparatus for adapting a bitstream includes: an Adaptation QoS information extraction unit extracting SVC adaptation operators, and relationships between the SVC adaptation operators and the usage environment information of a terminal from the Adaptation QoS information on the bitstream to which SVC technology is applied; an Adaptation Decision Taking Engine(ADTE) unit determining the SVC adaptation operators corresponding to the usage environment of the terminal receiving the transmitted bitstream among the SVC adaptation operators; and a SVC bitstream extraction unit extracting the bitstream based on the determined SVC adaptation operator. According to the apparatus and method, scalable video can be efficiently provided for changing network environments and multimedia usage environments, through adaptation of scalable video streams using an adaptation operator suggested in Classification Scheme (AQoSJDS). | 10-09-2008 |
| 20080260022 | Method for making macroblock adaptive frame/field decision - A method for making macroblock adaptive frame/field (MBAFF) decision based on information of a current macroblock pair is provided. The method includes the steps of: (a) performing a spatial frame/field decision process based on spatial information of the current macroblock pair; (b) performing a temporal frame/field decision process based on temporal information of the current macroblock pair; and (c) conducting a confidence estimation to select frame coding or field coding in accordance with the information of the current macroblock pair and decisions made by the spatial and temporal frame/field decision processes before generating a bitstream corresponding to the current macroblock pair. | 10-23-2008 |
| 20080267285 | PROCESSING MODULE, CONTROL METHOD, AND ELECTRONIC SYSTEM UTILIZING THE SAME - A processing module for an electronic system is disclosed. The processing module processes a video signal, provides the processed video signal to a display panel, and includes a decoder and a control unit. The decoder decodes the video signal to generate a decoded data stream. The control unit determines whether to transform the decoded data stream into a transform signal according to a control signal. | 10-30-2008 |
| 20080291995 | Adaptive video encoding apparatus and methods - Methods and apparatus for adaptive encoding of data such as for example video data. In one exemplary embodiment, a real-time video encoder is disclosed that changes video encoding processes to produce the best quality encoded video whilst maintaining a target encoding frame rate, according to one or more operating constraints. | 11-27-2008 |
| 20080310501 | APPARATUS AND METHODS FOR ENCODING, DECODING AND REPRESENTING HIGH DYNAMIC RANGE IMAGES - A data structure defining a high dynamic range image comprises a tone map having a reduced dynamic range and HDR information. The high dynamic range image can be reconstructed from the tone map and the HDR information. The data structure can be backwards compatible with legacy hardware or software viewers. The data structure may comprise a JFIF file having the tone map encoded as a JPEG image with the HDR information in an application extension or comment field of the JFIF file, or a MPEG file having the tone map encoded as a MPEG image with the HDR information in a video or audio channel of the MPEG file. Apparatus and methods for encoding or decoding the data structure may apply pre- or post correction to compensate for lossy encoding of the high dynamic range information. | 12-18-2008 |
| 20080310502 | INTER MODE DETERMINATION METHOD FOR VIDEO ENCODER - The present invention relates to a method for a video encoder to determine an inter mode. The video encoder selects initial candidate modes by using inter mode information of a previous frame so as to determine the inter mode, estimates a macroblock having the greatest correlation with a current macroblock in the previous frame, compares the rate-distortion cost of the corresponding macroblock and the rate-distortion cost of the selected mode from among the initial candidate modes, and determines whether to terminate the inter mode determination process early. When the early termination condition is satisfied, the video encoder determines the candidate mode having the minimum rate-distortion cost from among the initial candidate modes as the inter mode of the current macroblock, and terminates the inter mode determination process early. When the early termination condition is not satisfied, the video encoder additionally performs an inter prediction process by selecting additional candidate modes, and determines the candidate mode having the determined minimum rate-distortion cost as the inter mode of the current macroblock. | 12-18-2008 |
| 20080310504 | ADAPTIVE COEFFICIENT SCANNING FOR VIDEO CODING - This disclosure describes techniques for scanning coefficients of video blocks. In particular, the techniques of this disclosure adapt a scan order used to scan a two-dimensional block of coefficients into a one-dimensional coefficient vector based on statistics associated with one or more previously coded blocks. For example, statistics that indicate the likelihood that a given coefficient value in each position of a two-dimensional block is zero or non-zero may be collected for one or more previously coded blocks. At some point, an adjustment to the scan order can be made in order to better ensure that non-zero coefficients are grouped together near the front of the one-dimensional coefficient vector, which can improve the effectiveness of entropy coding. The collection of statistics and adjustment of scan order may be made separately for each possible prediction mode. | 12-18-2008 |
| 20080317120 | Method and System for MPEG2 Progressive/Interlace Type Detection - Methods and systems for MPEG2 progressive/interlace type detection are disclosed. Aspects of one method may include determining whether video data may comprise interlaced or progressive video data type, and use appropriate DCT coefficients scanning method for that video data type. Video data type may be determined by determining a number of interlaced macroblocks (IMs), for example, in a 60 frame macrocluster. This may comprise comparing field and frame variances for each macroblock in the original unencoded frame. The number of IMs may then be processed to generate a number of IMs in the macrocluster. The number of IMs in the macrocluster may be processed to determine the video data type. If, for example, three consecutive macroclusters are considered to be interlaced, then an appropriate pixel scanning method may be used for encoding. Similarly, if three consecutive macroclusters are considered to be progressive, then another appropriate pixel scanning method may be used for encoding. | 12-25-2008 |
| 20090003436 | Dynamically Adapting Media Streams - Tools and techniques for dynamically transcoding media streams are described herein. These tools may provide machine-readable storage media that contain machine-readable instructions that, when executed by the machine, cause the machine to define initial transcoding schemes under which media streams are to be transcoded as they passes between endpoints. In response to changes in conditions affecting the media streams, the machine may dynamically update the initial transcoding scheme. | 01-01-2009 |
| 20090034610 | Video rate adaptation to reverse link conditions - The disclosure relates to video rate adaptation techniques that may use information from a medium access control (MAC) layer and radio link protocol (RLP) layer. The techniques may greatly reduce video delay by adjusting video encoding rate. For real-time video telephony (VT) applications, these techniques may provide graceful quality degradation and improve user experience, especially when the channel conditions degrade. | 02-05-2009 |
| 20090046777 | IMAGE COMPRESSION SYSTEM WITH CODING QUANTITY CONTROL - An apparatus and method to preferentially select code quantity from DPCM path in a manner to satisfy the target code quantity thereby preventing deterioration of image quality. Code quantities obtained by a first compression system of quantizing an input image signal by quantization steps different from each other, or code quantities obtained by a second compression system which has compression factor and loss which are lower than those of the first compression system are added on an encoding system selection basis to calculate a total code quantity of equi-length unit. A calculated total code quantity and a target code quantity in the equi-length unit are compared to determine quantization step in the first compression system in accordance with the comparison result to select, on the encoding system selection basis, the first compression system or the second compression system of performing quantization by the determined quantization step. | 02-19-2009 |
| 20090052524 | VIDEO DATA COMMUNICATION SYSTEM AND METHOD - A video data communication system, method and computer program for providing interactive video communications to a remote user is disclosed. The system comprises a compositing, compression and encoding system and an interaction engine. The compositing, compression and encoding system is arranged to composite, compress and encode video data for transmission to the remote user. The interaction engine is arranged to receive interactions from the remote user and is responsive to communicate with the compositing, compression and encoding system to cause a change to said compression and transmission during interaction with a remote user. | 02-26-2009 |
| 20090060033 | PREDICTIVE ADAPTIVE CODING AND MODULATION - Methods, systems, and devices are described for providing predictive adaptive communications. Embodiments include a network access unit, in communication with multiple data terminals, and adapted to determine geospatial and other network data (e.g., current capability and position information relating to a designated one of the data terminals, map data, etc.), and to generate a link condition prediction as a function of the network data. The network access unit may then adaptively encode source data (e.g., using adaptive coding and modulation of hierarchically pre-coded data) to preempt impacts of changing link conditions on communications with the designated data terminal as a function of the link condition prediction. | 03-05-2009 |
| 20090074057 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 03-19-2009 |
| 20090080514 | SENDER SIDE CHANNEL ADAPTIVE VIDEO TRANSMISSION - A channel adaptive video transmission system and method. A system ( | 03-26-2009 |
| 20090086814 | TREATING VIDEO INFORMATION - Systems, methods, and techniques for treating video information are described. In one implementation, a method includes receiving video information, classifying one or more frames in the received video information as a scene, adjusting one or more coding parameters based on the classification of the frames, and coding the video information in accordance with the adjusted coding parameters. | 04-02-2009 |
| 20090092186 | MOVING IMAGE ENCODING APPARATUS AND METHOD FOR CONTROLLING THE SAME - The invention generates encoded data that properly conforms to pre-specified image quality and suppresses a large change in image quality. An encoding unit encodes pictures block by block according to a parameter. A distortion amount calculation unit calculates a picture distortion amount between a decoded picture and a picture before being encoded. A scene distortion amount calculation unit calculates a scene encoding distortion amount from the picture distortion amounts of a plurality of pictures having been encoded. A distortion bit rate conversion unit calculates a corrected bit rate by calculating a difference between a target distortion amount and the calculated scene encoding distortion amount, and multiplying the calculated difference by a coefficient. A target bit rate calculation unit calculates a bit rate for a picture subsequent to a picture of interest by adding a current target bit rate to the corrected bit rate, and sets it as the parameter. | 04-09-2009 |
| 20090097545 | Fixed-Point Implementation of an Adaptive Image Filter with High Coding Efficiency - In accordance with an embodiment of the present invention, a method comprising: representing coefficients of an adaptive image filter in binary words wherein the coefficients are restricted and the binary words have a maximum number of bits defined at least in part by a precision index; computing at least one of a convolution sum and multiple partial convolution sums of the adaptive image filter wherein the at least one of a convolution sum and multiple partial convolution sums having a constrained value range and having a binary representation with a fixed maximum number of bits; and generating the output of the adaptive image filter based at least in part on the at least one of a convolution sum and multiple partial convolution sums, is disclosed. | 04-16-2009 |
| 20090097546 | SYSTEM AND METHOD FOR ENHANCED VIDEO COMMUNICATION USING REAL-TIME SCENE-CHANGE DETECTION FOR CONTROL OF MOVING-PICTURE ENCODING DATA RATE - Disclosed is a method for detecting a scene change in real time in order to control a moving-picture encoding data rate, the method including: dividing a current frame into a plurality of regions, and calculating a dissimilarity metric (DM) of each divided region; determining if the dissimilarity metric of each divided region is beyond a preset reference value; calculating the number of regions, the dissimilarity metric of which is beyond the preset value, in the current frame; and determining that a scene change occurs in the current frame, when the number of regions, the dissimilarity metric of which is beyond the reference preset value, is equal to or greater than a preset threshold value. | 04-16-2009 |
| 20090097547 | Fixed-Point Implementation of an Adaptive Image Filter with High Coding Efficiency - In accordance with an embodiment of the present invention, a method comprising: representing coefficients of an adaptive image filter in binary words wherein the coefficients are restricted and the binary words have a maximum number of bits defined at least in part by a precision index; computing at least one of a convolution sum and multiple partial convolution sums of the adaptive image filter wherein the at least one of a convolution sum and multiple partial convolution sums having a constrained value range and having a binary representation with a fixed maximum number of bits; and generating the output of the adaptive image filter based at least in part on the at least one of a convolution sum and multiple partial convolution sums, is disclosed. | 04-16-2009 |
| 20090103606 | Progressive Distributed Video Coding - Progressive distributed video coding is described. In one implementation, video data maybe encoded by arranging the data into bit-planes. The arrangement of bit-planes is adapted by shifting the first non-zero bit-plane left by one place in the binary digits and moving the sign bit immediately in the place vacated by the shifted non-zero bit-plane. The adapted bit-planes are then encoded using an asymmetric Slepian-Wolf encoder. | 04-23-2009 |
| 20090103607 | SYSTEMS AND METHODS FOR CONTROLLING THE ENCODING OF A MEDIA STREAM - Systems and methods are described for providing a media stream transmitted from an encoding system to a remotely-located media player. The media stream is encoded according to an encoding parameter. Data is gathered about a transmit buffer within the encoding system, and the gathered data is processed to arrive at an estimate of network capacity and a calculated encoder rate. The encoding parameter is adjusted during subsequent encoding in response to a change in at least one of the estimate of network capacity and the calculated encoder rate. | 04-23-2009 |
| 20090110060 | Method and apparatus for performing lower complexity multiple bit rate video encoding using metadata - A Multiple Bit Rate (MBR) video encoding system wherein a first video encoding at a first bit rate is performed based on the original video source material, and wherein the first video encoding generates and saves metadata relating to the encoding process. In typical block-based motion-compensated video encoding techniques, this metadata may comprise block motion search information including motion vectors and error information. This saved metadata is then used during one or more subsequent encodings at different bit rates to generate a plurality of video encodings at different bit rates. This approach provides a more efficient MBR video encoding system realization than by encoding at each bit rate independently. | 04-30-2009 |
| 20090110061 | METHOD AND APPARATUS FOR PREDICTING VIDEO TRAFFIC - A method and apparatus for predicting video traffic are provided. The method includes extracting the statistical properties of previous Moving Picture Experts Group (MPEG)-4 video traffic and predicting the size of a subsequent frame based on the statistical properties of the previous MPEG-4 video traffic. Therefore, it is possible to address such problems associated with traffic bursts as transmission delays or low throughputs and thus to improve the performance of communication and network systems that transmit video traffic. | 04-30-2009 |
| 20090116549 | METHODS FOR SELECTING A PREDICTION MODE - A method of selecting a number of candidate prediction modes for a block in a video sequence, the method comprising calculating a cost value of each of prediction modes for each of a predetermined number of blocks, identifying one of the prediction modes having the smallest cost value for the each block, calculating a function value of each of the prediction modes for the each block using a cost function, ranking the prediction modes for the each block by the function value of each of the prediction modes and identifying an ordinal value of the one prediction mode having the smallest cost value, the ordinal value being related to the ordinal number of the one prediction mode after the ranking, calculating a feature value of the each block based on the function value of each of the prediction modes related to the each block, identifying a plurality of sets of blocks, each set of blocks having substantially the same feature value, identifying the number of each set of blocks and calculating a sum of the ordinal value of the one prediction mode for the each block in the each set of blocks, calculating an average value of the sum over the number of the each set of blocks for each set of the plurality sets of blocks, and determining a relation between the average values and the feature values for the predetermined number of blocks. | 05-07-2009 |
| 20090122860 | Method and Apparatus for Adaptive Group of Pictures (GOP) Structure Selection - There are provided a method and apparatus for adaptive Group of Pictures structure selection. The apparatus includes an encoder for encoding a video sequence using a Group of Pictures structure by performing, for each Group of Pictures for the video sequence, picture coding order selection, picture type selection, and reference picture selection. The selections are based upon a Group of Pictures length. | 05-14-2009 |
| 20090129464 | Adaptive Coding and Decoding - The invention relates to a method of transmitting an image portion, which method comprises, in a coding phase analyzing a coding context, adapting a parameter of a group of prediction functions that can be used for coding, forming a first predicted descriptor using a selected prediction function, and determining and transmitting a residue between the first predicted descriptor and the current descriptor. The method further includes a decoding phase comprising analyzing a decoding context, adapting a parameter of a group of prediction functions that can be used for decoding, forming a second predicted descriptor using a selected prediction function and combining the second predicted descriptor and the received residue to deliver a decoded version of the current descriptor. | 05-21-2009 |
| 20090129465 | METHODS AND APPARATUS FOR ADAPTIVE REFERENCE FILTERING (ARF) OF BI-PREDICTIVE PICTURES IN MULTI-VIEW CODED VIDEO - There are provided methods and apparatus for adaptive reference filtering of bi-predictive pictures in multi-view coded video. An apparatus includes an encoder ( | 05-21-2009 |
| 20090135901 | COMPLEXITY ADAPTIVE VIDEO ENCODING USING MULTIPLE REFERENCE FRAMES - Encoding techniques are provided that consider decoder complexity when encoding video data. A complexity adaptive encoding algorithm encodes video data by encoding current frame data based on reference frame data taking into account an expected computational complexity cost of decoding the current frame data. | 05-28-2009 |
| 20090135902 | BITRATE CONTROL DEVICE FOR CONTROLLING BITRATE OF VIDEO DATA - A bitrate control device controls bitrate of video data and includes: a setting module that sets, for each frame in the video data, a target code amount to be used in encoding the frame by an encoding module for maintaining a given bitrate; an adjusting module that adjusts the target code amount set by the setting module based on given information; and a managing module that is configured to perform: saving a code amount corresponding to an amount reduced in the target code amount by the adjusting module in a virtual storage management buffer having a given upper limit, when the adjusting module adjusts to reduce the target code amount; and withdrawing a code amount corresponding to an amount increased in the target code amount by the adjusting module from the virtual storage management buffer, when the adjusting module adjusts to increase the target code amount. | 05-28-2009 |
| 20090154555 | Method and Apparatus for Selecting a Coding Mode - A method and apparatus for selecting a coding mode are described. For example, the method receives at least one block of a signal to be encoded. The method determines a frame vertical pixel difference in the at least one block and determines a field vertical pixel difference in the at least one block. The method then compares the frame vertical pixel difference with the field vertical pixel difference to determine a first coding mode for the at least one block. | 06-18-2009 |
| 20090154556 | ADAPTIVE MULTIMEDIA SYSTEM FOR PROVIDING MULTIMEDIA CONTENTS AND CODEC TO USER TERMINAL AND METHOD THEREOF - Disclosed are an adaptive multimedia system for providing multimedia contents and a codec to a user terminal, and a method thereof. The adaptive multimedia system includes: a media server controller that receives profile information from an open codec player of the user terminal, and when a codec for decoding the multimedia contents does not exist in the user terminal, transmits a control message to allow the multimedia contents and the decoding codec to be transmitted together; and at least one transmission frame generator that encodes the multimedia contents through a transcoder and an encoding module according to the control message transmitted from the media server controller, generates a transmission frame including the encoded multimedia contents and the decoding codec, and transmits the generated transmission frame to the open codec player. | 06-18-2009 |
| 20090161755 | DEVICE ADAPTIVE VIDEO TRANSMISSION SYSTEM FOR USE WITH LAYERED VIDEO CODING AND METHODS FOR USE THEREWITH - A video transmission system includes a transceiver module that receives a device parameter from a remote device and that transmits a video signal to the remote device, wherein the video signal is transmitted as at least one separate video layer stream chosen from, an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A control module chooses the at least one separate video layer stream based on the device parameter. | 06-25-2009 |
| 20090161756 | Method and apparatus for motion adaptive pre-filtering - A video filter includes a motion detector to detect motion between frames of a video for each pixel, a shape adaptive spatial filter and a weighted temporal filter. The spatial filter and the temporal filter are smoothly mixed together based on the amount of motion detected by the motion detector for each pixel. When the motion detected by the motion detector is low, the video filter tends to do more temporal filtering. When the motion detected by the motion detector is high, the video filter tends to do more spatial filtering. | 06-25-2009 |
| 20090168868 | Systems and apparatuses for performing CABAC parallel encoding and decoding - Apparatuses, systems, and computer program products that encode and/or decode information of a video stream, such as an MPEG-4 video stream, are disclosed. Some embodiments comprise an apparatus having a binarizer module to create a plurality of bins for a syntax element for information of the video stream, a context selection module to generate an index value and a most probable symbol (MPS) value for encoding the plurality of bins, and an arithmetic coding module to encode a first and a second bin of the plurality of bins based on a first probability value and a second probability value, respectively, wherein the first and second probability values are determined via the generated index value and MPS value. Examples of some embodiments are high definition personal video recorders, transcoders, computers, personal digital assistants, cellular telephones, portable video players, high definition digital versatile disc (HD-DVD) devices, and Blu-ray disc-read only memory (BD-ROM) devices. | 07-02-2009 |
| 20090185619 | Combined Storage And Transmission of Scalable Media - The invention involves collective management of video and audio content in a content provider. The video and audio content is available in multiple potential versions, e.g. in the form of scalable media or media pre-encoded to fixed bandwidth levels. The video and audio data is associated with bandwidth share information enabling estimation of a respective apportionment of a total available bandwidth to the video and audio content. The provider uses this share information and information of the total assignable bandwidth level for providing a respective video version and audio version from the multiple potential versions. This allows for increased user-quality when rendering the video and audio data as optimal video and audio version can be dynamically provided during the media session. | 07-23-2009 |
| 20090185620 | VIDEO ENCODING APPARATUS AND METHOD FOR THE SAME - A video encoding apparatus includes a calculator to calculate a bit rate every time interval of input encoded data from the number of encoded bits of each of a plurality of time intervals derived from the input encoded data by division in a decoding time direction, the input encoded data including variable bit rate encoded data encoded at a variable bit rate beforehand, a calculator to subtract the input bit rate from the first transmission bit rate to obtain a second transmission bit rate every time interval, and an encoder to encode video data according to the second transmission bit rate to output encoded data. | 07-23-2009 |
| 20090190656 | Television Functionality on a Chip - A television on a chip (TVOC) system that provides a cost effective approach for providing television functionality on a single integrated circuit chip is disclosed. A TVOC includes the functionality necessary to receive and display television signals in a variety of input and output formats. A TVOC can be used in set-top boxes for cable and satellite television, or directly within a television. All functionality provided can be provided on a single integrated circuit. TVOC includes a data transport module, an IF demodulator, a digital audio engine, an analog audio engine, a digital video engine, and an analog video engine. The TVOC also includes three sets of interfaces including output interfaces, control interfaces and ancillary interfaces. Further features and embodiments provide enhanced functionality and increased efficiencies. | 07-30-2009 |
| 20090196342 | Adaptive Geometric Partitioning For Video Encoding - There are provided methods and apparatus for adaptive geometric partitioning for video encoding and decoding. An apparatus includes an encoder for encoding image data corresponding to pictures by adaptively partitioning at least portions of the pictures responsive to at least one parametric model. The at least one parametric model involves at least one of implicit and explicit formulation of at least one curve. | 08-06-2009 |
| 20090196343 | CHANNEL CAPACITY ESTIMATION AND PREDICTION METHOD AND APPARATUS FOR RATE ADAPTIVE WIRELESS VIDEO - There is provided a channel capacity estimation method for adaptive video transmission, the method including: estimating a Bit Error Rate (BER) for a received video packet; and estimating channel capacity by using the estimated BER. | 08-06-2009 |
| 20090196344 | METHOD AND APPARATUS FOR TRANSCODING BETWEEN HYBRID VIDEO CODEC BITSTREAMS - A method and apparatus for performing transcoding between bitstreams coded by hybrid video codecs which uses fewer resources than decoding/decompressing the original bitstream and recoding/recompressing it to the second format. According to a specific embodiment, the present method can exploits the similarity of the standard video compression algorithms to, where possible, convert encoded parameters in the incoming bitstreams directly into encoded parameters which constitute compliant data for the outgoing bitstream. | 08-06-2009 |
| 20090196345 | Format Adaptable Video Transcoding - A method for providing adaptive video compression includes encoding a video stream in a first compressed format, storing the video stream in a storage device, retrieving the video stream from the storage device, decoding the video stream, encoding the video stream in a second compressed format, and storing the video stream in the storage device. Systems and other methods for providing adaptive video compression are also disclosed. | 08-06-2009 |
| 20090201986 | Method and Arrangement for Coding Transform Coefficients in Picture and/or Video Coders and Decoders and a Corresponding Computer Program and a Corresponding Computer-Readable Storage Medium - The present invention describes a method and an arrangement for coding transform coefficients in picture and/or video coders and decoders and a corresponding computer program and a corresponding computer-readable storage medium, which can particularly be employed as a novel efficient method for binary-arithmetic coding transform coefficients in the field of video coding. | 08-13-2009 |
| 20090207910 | MULTIPLEXING COMPRESSED SIGNALS - In digital video compression, the output bit-streams from respective encoding devices, each of which has a quantization parameter being varied between coarser and finer values in accordance with the nature of the material being encoded, are multiplexed. The allocation of bit rate amongst the respective encoding devices is effected by using a measure of the relative quantization levels of the respective encoding devices to select the encoding device from which data is read. | 08-20-2009 |
| 20090213927 | System and Method for Compressing Video Based on Detected Data Rate of a Communication Channel - A system and method are described below for encoding interactive low-latency video using interframe coding. For example, one embodiment of a computer-implemented method for performing video compression comprises: detecting a maximum data rate of a communication channel between a server and a client; dynamically selecting a tile size for encoding a sequence of images based on the detected maximum data rate; logically subdividing each of the sequence of images into a plurality of tiles sized according to the selected tile size, each of the tiles having a defined position within each of the sequence of images; encoding each tile within each image of the sequence of images using a first compression format or a second compression format, wherein a tile at a particular position of a first image in the sequence of images is encoded using the first compression format and the same tile within one or more subsequent images is encoded using the second compression format. | 08-27-2009 |
| 20090219990 | Cross-Layer Optimization for Scalable Video Multicast over IEEE 802.11 Wireless Local Area Networks - A system and method for transmitting video signals to a plurality of receivers in a multicast session, including controlling and adapting coding, transmission and protection schemes of a plurality of layers of a network protocol stack are described. | 09-03-2009 |
| 20090219991 | BIT RATE ESTIMATION IN DATA OR VIDEO COMPRESSION - To reduce the complexity of rate-distortion cost computation in AVC (MPEG4 Pat2/H.264), a bit rate estimation method is used to avoid entropy coding during Intra and Inter mode decision. The bit rate estimation method predicts the number of entropy coded bits based on the quantized transform coefficients, thus avoiding the need to entropy code the quantized transform coefficients at each decision iteration. | 09-03-2009 |
| 20090225828 | Video Compression System and Method for Compensating for Bandwidth Limitations of a Communication Channel - A system and method are described below for encoding interactive low-latency video using interframe coding. For example, one embodiment of a computer-implemented method for performing video compression comprises: detecting a maximum data rate of a communication channel between a server and a client; transmitting a video stream comprising a series of sequential frames from the server to the client; detecting that the maximum data rate will be exceeded if a particular frame of the sequence of frames is transmitted from the server to the client over the communication channel; and in lieu of transmitting the frame which could cause the maximum data rate to be exceeded, causing the client to re-render the previous frame of the sequence of frames, thereby effectively reducing the frame rate of the video stream rendered on the client. | 09-10-2009 |
| 20090232202 | WIRELESS VIDEO STREAMING USING SINGLE LAYER CODING AND PRIORITIZED STREAMING - A method of communication includes providing single layer content coded video frames ( | 09-17-2009 |
| 20090232203 | Expert System and Method for Elastic Encoding of Video According to Regions of Interest - An elastic expert system for allocating bits according to application domain requirements and network resources. The elastic expert system observes the network resources and determines a state for allocating bits, the state relating to the application domain requirements. The elastic expert system can then allocate bits to a region-of-interest based on the determined state. The elastic expert system also can allocate bits to a background region and an extended region of interest. | 09-17-2009 |
| 20090232204 | METHOD AND APPARATUS FOR ENCODING AND DECODING TRANSFORM COEFFICIENTS - A method of encoding transform coefficients and a transform coefficient encoding apparatus, and a method of decoding transform coefficients and a transform coefficient decoding apparatus are provided. The method of encoding the transform coefficients includes reading transform coefficients in a current block, determining whether a first transform coefficient having an absolute value greater than a predetermined threshold value exists in the transform coefficients in the current block, generating first flag information indicating whether the first transform coefficient exists, dividing the first transform coefficient from information of a second transform coefficient that is remaining transform coefficients excluding the first transform coefficient, and encoding the first transform coefficients and the second transform coefficients separately, thereby more efficiently using a correlation between each of the transform coefficients. | 09-17-2009 |
| 20090232205 | ARITHMETIC DECODING APPARATUS AND METHOD - The decoding apparatus enabling high-speed arithmetic decoding in decoding data coded using CABAC is an arithmetic decoding apparatus which receives, as input, coded data obtained by converting multivalue information of syntax into binary data then performing Context-based Adaptive Binary Arithmetic Coding on the binary data, and which decodes the coded data into the original multivalue information. During the reconstruction of the current binary data, the arithmetic decoding apparatus, parallelly calculates, in the same cycle, “next-next identifier code” candidates and “context index” candidates corresponding to the “next-next identifier code” candidates, and, in the next cycle, parallelly calculates, in the same cycle, a “next identifier code”, context index candidates corresponding to the next identifier code, and “probability variable” candidates corresponding to the “context index” candidates, and, when the current binary data reconstruction result is known, selects the respective calculation results according to the reconstruction result. | 09-17-2009 |
| 20090238262 | Recording Streaming Delta-Encoded Data - Apparatus having corresponding methods, computer-readable media, and data structures comprise an input circuit adapted to receive a stream of delta-encoded data; a record circuit adapted to store the stream of delta-encoded data in a stream file; a current frame circuit adapted to maintain a current frame of the data based on the stream of delta-encoded data; a record frame circuit adapted to store the current frame in a frame file as an intraframe with a frame pointer at a plurality of different index times, wherein each frame pointer indicates a location in the stream file associated with the respective index time; and a record index circuit adapted to store the index times sequentially in an index file, and adapted to store an index pointer for each index time, wherein each index pointer indicates a location in the frame file of the intraframe associated with the respective index time. | 09-24-2009 |
| 20090252219 | METHOD AND SYSTEM FOR THE TRANSMISSION OF DIGITAL VIDEO OVER A WIRELESS NETWORK - An apparatus, system and method are provided for adaptive flow control of layered streaming video over wireless local area networks (WLANs). In one aspect prioritised and adaptive transmission mechanisms are provided based on buffer fullness and discarding visually less important packets so that future visually more important packets can reach the decoder in time. In another aspect, aggregated control is provided for all video applications as well as separate control for each video application. | 10-08-2009 |
| 20090252220 | METHOD AND APPARATUS FOR SELECTIVE INTER-LAYER PREDICTION ON MACROBLOCK BASIS - Provided are an enhanced inter-layer reference picture designating method and apparatus and an enhanced inter-layer reference picture recovering method and apparatus capable of increasing coding efficiency by allowing different blocks in an upper spatial layer picture of a current to-be-decoded or to-be-encoded picture to refer to blocks in different lower spatial layer pictures. | 10-08-2009 |
| 20090257486 | Adaptive filtering for bit-depth scalable video codec - Adaptive filtering may be used to increase the quality of tone mapped, baseline layer encoded information. As a result, scalable video codecs may be implemented with improved picture quality in some embodiments. | 10-15-2009 |
| 20090257487 | VIDEO ROBUSTNESS USING SPATIAL AND TEMPORAL DIVERSITY - The present invention relates to the fields of wireless communication, video transmission, unequal error protection, time diversity, space diversity. The present invention especially relates to a transmitter, a receiver, a method of transmitting video data and a method for receiving video data. The transmitter for transmitting video data comprises: A transmission section, said transmission section comprising a parser for dividing said video data into at least two classes and dividing each class into one or more blocks. Hereby, with each class there is associated a different number. Said transmission section is adapted to transmit at least one block of each class once on each communication channel of a set communication channels, the number of communication channels comprised in the respective set being given by the number associated with the respective class. Further, different communication channels correspond to different transmission times and/or different transmit paths. The receiver for receiving video data comprises: A receiving section for receiving said video data on a plurality of communication channels and generating a plurality of partial signals, each partial signal corresponding to a different communication channel. Different communication channels correspond to different transmission times and/or different receive paths. A decoding and validating section comprising a decoder for decoding a first block of said video data based on a partial signal of a first number of at least two partial signals and an error detector for determining if said decoded first block of video data is corrupted. In case said decoded first block of video data is determined to be corrupted, said decoder is configured to decode said first block of video data based on an other signal of said first number of partial signals. | 10-15-2009 |
| 20090268808 | Novel user sensitive information adaptive video transcoding framework - A video system includes a sensitive-information generator to generate a definition of sensitive information parts (SIP) areas. The video system also includes a transcoder to transcode the SIP areas at a higher bit rate than non-SIP areas in the frames based on bandwidth available for transmitting the transcoded frames. The SIP areas are generated statically or dynamically. The video system adapts to various network conditions and utilizes the bandwidth efficiently to deliver the sensitive information of high quality and to enhance the user experience. | 10-29-2009 |
| 20090274208 | SYSTEM AND METHOD FOR DECODING CONTEXT ADAPTIVE VARIABLE LENGTH CODING - A system and method that process encoded data, wherein the encoded data is an encoded video stream. The encoded data may be buffered and the characteristics of the buffered encoded data may be determined and used to select a decoding table from a plurality of decoding tables. An encoded word may then be decoded using the selected decoding table. The output of the decoding table may be the corresponding decoded word and the size of the encoded word. The size of the encoded word may be utilized to shift the buffered encoded data. The decoded word may be sent to the appropriate portion of the system. | 11-05-2009 |
| 20090279602 | Method, Device and System for Effective Fine Granularity Scalability (FGS) Coding and Decoding of Video Data - Methods, devices and systems for effective and improved video data scalable coding and/or decoding based on Fine Grain Scalability (FGS) information are disclosed. A method for encoding video data is shown, comprising obtaining video data; generating a base layer picture based on the obtained video data, the base layer picture comprising at least one slice, the slice corresponding to a region within the base layer picture; and generating at least one enhancement layer picture corresponding to the base layer picture, wherein the at least one enhancement layer picture comprises at least one FGS slice corresponding to a region within the enhancement layer picture, wherein the region to which the at least one of said FGS-slices corresponds is different from the region to which the slice in the base layer picture corresponds, encoding the base layer picture and the at least one enhancement layer picture resulting in encoded video data. | 11-12-2009 |
| 20090279603 | Method and Apparatus for Adaptively Determining a Bit Budget for Encoding Video Pictures - When for video coding Intra refresh is used, which inserts Intra coded blocks into previously Inter coded pictures, an efficiently adapted rate control method is required for error resilient video coding. A method for adaptively determining a bit budget for encoding video pictures comprises pre-analyzing each of the pictures of a group of pictures, wherein a relative complexity index is calculated for each picture, allocating bits to the pictures based on their relative complexity index and encoding each of the pictures with the allocated number of bits. The pre-analysis comprises selecting pictures for Intra refresh coding, extracting attention area information from the selected pictures, encoding at least the macroblocks of the attention area using Intra mode, calculating for each picture a complexity index, and calculating from the complexity indices of the pictures of the group a relative complexity index for each picture. Thus, a subjectively better video quality is achieved. | 11-12-2009 |
| 20090285282 | ACTIVE CLIENT BUFFER MANAGEMENT METHOD, SYSTEM, AND APPARATUS - Active client buffer management methods, systems, and apparatus for transmitting electronic data from a server to a client having a limited receive buffer are disclosed. The receive buffer is managed by determining a consumption rate at the client and adjusting the transmission rate of the server responsive to the determined consumption rate to manage the fill level of the receive buffer. | 11-19-2009 |
| 20090290635 | Method and system for optimal video transcoding based on utility function descriptors - Techniques for generating utility-based descriptors from compressed multimedia information are disclosed. A preferred method includes the steps of receiving least a segment of compressed multimedia information, determining two or more portions of utility based descriptor information based on one or more adaptation operations, each corresponding to a unique target rate, adapting the compressed multimedia segment by each the portions of utility based descriptor information to generate adapted multimedia segments, using a quality management method to generate measurement for each adapted multimedia segment, and generating a utility based descriptors based on the portions of utility based descriptor information and corresponding quality measurements. | 11-26-2009 |
| 20090290637 | Methods and Apparatus for Adaptive Reference Filtering - There are provided methods and apparatus for adaptive reference filtering. An apparatus includes an encoder for encoding at least one picture. The encoder performs adaptive filtering of at least one reference picture to respectively obtain at least one filtered reference picture, and predictively codes the at least one picture using the at least one filtered reference picture. The at least one reference picture is a picture wherein at least one sample thereof is used for inter-prediction either of subsequent to the at least one sample being applied to an in-loop filter or in an absence of the at least one sample being applied to an in-loop filter | 11-26-2009 |
| 20090304070 | METHOD ALLOWING COMPRESSION AND PROTECTION PARAMETERS TO BE DETERMINED FOR THE TRANSMISSION OF MULTIMEDIA DATA OVER A WIRELESS DATA CHANNEL - A method allowing operating parameters, such as the compression ratio and/or the protection ratio for a multimedia data transmission channel to be determined, wherein it includes at least one step during which several values of sensitivity are determined for pairs of values fixed source bit-rate, desired compression ratio, a step where the different values obtained for an operating point of the fixed channel are compared with one another, and a step where the optimum sensitivity value is selected, the sensitivity value being defined taking the desired source bit-rate and the compression ratio into account. | 12-10-2009 |
| 20090304071 | ADAPTIVE APPLICATION OF ENTROPY CODING METHODS - Disclosed is an exemplary video coder and method that provide a video decoder control method for analyzing data to schedule coding of the data. Input data may be encoded to a plurality of different encoding. It may be determined if a minimum number of the plurality of different encodings comply with at least one of a bitrate constraint and a computational complexity constraint. An encoding may be selected from the compliant encodings that maximizes the quality of the decoded data. Quality may be determined based on at least one predetermined metric related to the selected encoding; and the selected encoding may be delivered to an output buffer. | 12-10-2009 |
| 20090304072 | BIT RATE CONVERTER AND BIT RATE CONVERSION METHOD - A bit rate converter for converting a first encoded animation image data to a second animation image data, having a different bit rate. The converter stores an assessment value indicating the importance level within each reproduction time interval with respect to the first animation image data. Second animation image data is generated by arithmetically determining the bit rate of the second animation image data on the basis of the bit rate information on the first animation image data and the assessment value indicating the importance level within a preselected time interval with respect to the first animation image data. Accordingly, a larger amount of code is preferentially allocated to the time interval having an assessment value of higher importance level. | 12-10-2009 |
| 20090316779 | INFORMATION PROCESSING DEVICE AND METHOD - The present invention relates to an information processing apparatus and method which make it possible to transmit image data with high quality and low delay in more versatile situations. A control unit | 12-24-2009 |
| 20090316780 | Video coding method with non-compressed mode and device implementing the method - The present invention relates to a method of video coding comprising a mechanism enabling activation or deactivation of the compression of macroblocks of the video stream to be coded according to the efficiency of the compression and functioning in at least two modes, a first normal coding mode and a second non-compressed coding mode, said method being wherein it comprises normal coding mode, the macroblock being processed is compressed by a coding loop then by an entropic coder, said compression being considered efficient if the size occupied by the compressed macroblock is noticeably less than the size occupied by the macroblock without compression, in the case where the compression of the macroblock being processed is not efficient, the non-compressed mode is activated ( | 12-24-2009 |
| 20090323803 | Methods and apparatus for enhanced performance in a multi-pass video recorder - There are provided methods and apparatus for enhanced performance in a multi-pass video encoder. An apparatus includes a video encoder for encoding a video bitstream. The apparatus further includes a video quality analyzer, in signal communication with the encoder, for performing a video quality analysis of the video bitstream for a given encoding pass to detect encoder compression artifacts in the video bitstream, and providing to the encoder information relating to the encoder compression artifacts to enable a re-encoding setup of the encoder to reduce an occurrence of the encoder compression artifacts in subsequent re-encoding passes. At least one of the video quality analysis and the re-encoding setup are automated. | 12-31-2009 |
| 20090323804 | SYNTAX ELEMENTS TO SVC TO SUPPORT COLOR BIT DEPTH SCALABILITY - This invention presents a scalable solution to encode the whole 12-bit raw video once to generate one bitstream that contains an H.264/AVC compatible base layer and a scalable enhancement layer. If an H.264/AVC decoder is available at the client end, only the base layer sub-bitstream is decoded and the decoded 8-bit video can be viewed on a conventional 8-bit display device; if the color bit depth scalable decoder is available at the client end, both the base layer and the enhancement layer sub-bitstreams will be decoded to obtain the 12-bit video and it can be viewed on a high quality display device that supports more than eight bit. | 12-31-2009 |
| 20100008416 | Systems, Methods, and Media for Providing Selectable Video Using Scalable Video Coding - Systems, methods, and media for providing selectable video using scalable video coding are provided. In some embodiments, systems for providing selectable video using scalable video coding are provided, the systems comprising: a scalable video coding capable encoder that receives a base content sequence and at least one added content sequence that has different content from the base content stream and that produces at least one SVC stream that includes a basic layer, that corresponds to the base content sequence, and at least one enhanced layer, that corresponds to content in the at least one added content sequence; and a digital processing device that controls whether the at least one enhanced layer in the SVC stream is displayed at a destination for the SVC stream. | 01-14-2010 |
| 20100008417 | Video encoding techniques - Techniques are described that can be used to determine parameters of an adaptive Wiener filter to apply to a video region. The following parameters of the Wiener filter may be adjusted: coefficients, coefficient quantization, filter type, filter size, prediction mode, entropy encoding, and number of filter tables. The parameters associated with the lowest rate distortion cost of the encoder are selected for transmission with the encoded video. If not using adaptive Wiener filtering results in a lowest rate distortion cost, then adaptive Wiener filtering is not used for the video region. If using adaptive Wiener filtering results in a lowest rate distortion cost, then the parameters applied by the adaptive Wiener filtering that result in the lowest rate distortion cost are communicated with the filtered video region. | 01-14-2010 |
| 20100020866 | QUALITY SCALABLE CODING - A more efficient way of addressing different bit-depths, or different bit-depths and chroma sampling format requirements is achieved by using a low bit-depth and/or low-chroma resolution representation for providing a respective base layer data stream representing this low bit-depth and/or low-chroma resolution representation as well as for providing a higher bit-depth and/or higher chroma resolution representation so that a respective prediction residual may be encoded in order to obtain a higher bit-depth and/or higher chroma resolution representation. By this measure, an encoder is enabled to store a base-quality representation of a picture or a video sequence, which can be decoded by any legacy decoder or video decoder, together with an enhancement signal for higher bit-depth and/or reduced chroma sub-sampling, which may be ignored by legacy decoders or video decoders. | 01-28-2010 |
| 20100020867 | Quality Scalable Video Data Stream - An apparatus for generating a quality-scalable video data stream includes a coder for coding a video signal using block-wise transformation to obtain transform blocks of transformation coefficient values for a picture of the video signal, a predetermined scan order with possible scan positions being defined among the transformation coefficient values within the transform blocks so that in each transform block, for each possible scan position, at least one of the transformation coefficient values within the respective transform block belongs to the respective possible scan position; and a generator for forming, for each of a plurality of quality layers, a video sub-data stream containing scan range information indicating a sub-set of the possible scan positions, and transform coefficient information on transformation coefficient values belonging to the sub-set of possible scan positions such that the sub-set of each quality layer includes at least one possible scan position not included by the sub-set of any other of the plurality of quality layers. | 01-28-2010 |
| 20100020868 | TRANSITIONING COMPRESSION LEVELS IN A STREAMING IMAGE SYSTEM - Systems and media for transitioning compression levels of a streaming image system include a machine-accessible medium of a storage device containing instructions for transitioning compression levels between image frames in a streaming image system. Embodiments may include receiving client information from a client of an interactive streaming image system, generating a new image frame based on the received information, determining an initial compression level, comparing the new image frame to a previous frame to determine whether content changed, performing a smoothing heuristic by generating a multi-frame smoothing routine by increasing image quality in response to no change of content and decreasing image quality in response to a change in content, setting the new compression level based on the multi-frame smoothing routine, and encoding and transmitting the new image frame and compression level to a client. | 01-28-2010 |
| 20100027619 | METHOD AND APPARATUS FOR ENCODING AND/OR DECODING VIDEO DATA USING ADAPTIVE PREDICTION ORDER FOR SPATIAL AND BIT DEPTH PREDICTION - A scalable video bitstream may have an H.264/AVC compatible base layer (BL) and a scalable enhancement layer (EL), where scalability refers to color bit depth. The H.264/AVC scalability extension SVC provides also other types of scalability, e.g. spatial scalability where the number of pixels in BL and EL are different. According to the invention, BL information is upsampled (TUp,BDUp) in two logical steps in adaptive order, one being texture upsampling and the other being bit depth upsampling. Texture upsampling is a process that increases the number of pixels, and bit depth upsampling is a process that increases the number of values that each pixel can have, corresponding to the pixels color intensity. The upsampled BL data are used to predict the collocated EL. A prediction order indication is transferred so that the decoder can upsample BL information in the same manner as the encoder, wherein the upsampling refers to spatial and bit depth characteristics. | 02-04-2010 |
| 20100027620 | SIGNAL COMPRESSING SYSTEM - A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, and a selection signal which identifies the scanning pattern found to be most efficient. | 02-04-2010 |
| 20100040136 | METHOD FOR PERFORMING BINARIZATION USING A LOOKUP TABLE - The present invention also relates to a binarization method for generating a binary sequence, comprising the steps of: (a) receiving a Syntax Element with its binarization parameters; (b) acquiring the corresponding binarization scheme of said Syntax Element using an updateable lookup table; (c) transforming said Syntax Element value into a corresponding binary sequence; (d) acquiring a Context Index, a bypass flag and a terminate flag for each of the bins of said corresponding binary sequence using said lookup table; (e) attaching each of said Context Indexes, said bypass flags, and said terminate flags to its bin of said corresponding binary sequence; and (f) generating said bins of said corresponding binary sequence, their said Context Indexes, said bypass flags, and said terminate flags. | 02-18-2010 |
| 20100040137 | Video processing method and system - A video processing method is implemented by transmitting and receiving devices, and includes: obtaining a standard resolution source image frame from an image sequence, and detecting a network bandwidth; when an encoding bit rate of the source image frame exceeds the network bandwidth, decreasing a resolution thereof to obtain reduced image frame content and generating a relay image frame containing the same and having an encoding bit rate not exceeding the network bandwidth; generating an encoded image frame by encoding the source or the relay image frame, and sending the encoded image frame to the receiving device; and decoding the encoded image frame to obtain the source or the relay image frame, and recovering from the relay image frame, when obtained, a restored image frame corresponding to the reduced image frame content and having the standard resolution. A video processing system is also disclosed. | 02-18-2010 |
| 20100040138 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 02-18-2010 |
| 20100040139 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 02-18-2010 |
| 20100040140 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 02-18-2010 |
| 20100046612 | CONVERSION OPERATIONS IN SCALABLE VIDEO ENCODING AND DECODING - Techniques and tools for conversion operations between modules in a scalable video encoding tool or scalable video decoding tool are described. For example, given reconstructed base layer video in a low resolution format (e.g., 4:2:0 video with 8 bits per sample) an encoding tool and decoding tool adaptively filter the reconstructed base layer video and upsample its sample values to a higher sample depth (e.g., 10 bits per sample). The tools also adaptively scale chroma samples to a higher chroma sampling rate (e.g., 4:2:2). The adaptive filtering and chroma scaling help reduce energy in inter-layer residual video by making the reconstructed base layer video closer to input video, which typically makes compression of the inter-layer residual video more efficient. The encoding tool also remaps sample values of the inter-layer residual video to adjust dynamic range before encoding, and the decoding tool performs inverse remapping after decoding. | 02-25-2010 |
| 20100046614 | APPARATUS AND METHOD FOR ESTIMATING COMPRESSION MODES FOR H.264 CODINGS - The present invention relates to technology of compressing large image data in order to effectively use a storage medium and efficiently use a communication medium in an image data compression technique field, and more particularly, to fast compression mode calculation in H.264. The present invention provides an H.264 compression mode estimation apparatus comprising: a macroblock image characteristic calculator calculating a macroblock image characteristic from macroblock image information; a macroblock mode estimator which comprises mode history tables and a table management unit managing these tables, in order to estimate a mode of a current macroblock from macroblock coordinates; and a mode estimation optimization judgment unit calculating RD-cost for the mode estimation and selecting an optimal mode in order to prevent the spread of errors of the estimated mode. | 02-25-2010 |
| 20100061444 | SYSTEM AND METHOD FOR VIDEO ENCODING USING ADAPTIVE SEGMENTATION - A method for decoding compressed video information is disclosed. The video information can include a plurality of frames each having a plurality of blocks. The method includes reading from the video information a segment map that associates blocks in the frame with four segment identifiers. Each segment identifier is associated with one or more segment parameters, such as quantization parameters, loop filter type, loop filter strength and sub-pixel interpolation filter. The blocks in each segment are then decoded using the associated segment parameters. Segment parameters can persist to following frames unless overwritten by a subsequent frame. A frame can also include a bit suppressing segmentation, in which case default parameters are sued for all blocks in the frame. | 03-11-2010 |
| 20100061445 | Moving picture editing apparatus - A moving picture editing apparatus includes a picture extracting unit that extracts pictures of a predetermined range including a picture subsequent to a coupling point from encoded data to be coupled; an adjustment-information generating unit that generates adjustment information for adjusting values of information to be continuous from/to inside to/from outside the predetermined range upon decoding, from among information included in headers of the pictures of the predetermined range extracted by the picture extracting unit; and a re-encoding unit that adds the adjustment information generated by the adjustment-information generating unit to the headers of the pictures of the predetermined range extracted by the picture extracting unit, and re-encodes the pictures of the predetermined range. | 03-11-2010 |
| 20100061446 | VIDEO SIGNAL ENCODING - A method and system for encoding a video signal provides an encoded signal that is compressed in order that it may be efficiently transmitted over the link whilst also meeting a predetermined standard in terms of its estimated perceptual quality when the signal is decoded and displayed. This is achieved by providing, at the encoding end, a control unit ( | 03-11-2010 |
| 20100074323 | ADAPTIVE FILTER - A video encoder that utilizes adaptive loop filtering for coding video data includes: a prediction unit, for performing prediction techniques according to original video data and reconstructed video data to generate predicted samples; a reconstruction unit, for reconstructing the predicted samples to form the reconstructed video data; a reference picture buffer, for storing the reconstructed video data; a filter parameter estimator, for estimating filter parameters according to the original video data and the reconstructed video data; and an adaptive filter, for utilizing the stored filter parameters to perform filtering on the reconstructed video data. | 03-25-2010 |
| 20100074324 | ADAPTIVE VIDEO STREAMING SYSTEM AND METHOD - A method of transmitting a video stream over an IP network. The method includes encoding a source video into a plurality of packets. The method also includes measuring a real-time transmission status of a current set of the plurality of packets. The method also includes mapping a utility curve for the video which reflects utilities of the video at corresponding sending rates. The method also includes calculating a target sending rate for a next set of the plurality of packets according to the real-time transmission status of the current set of the plurality of packets and the utility curve. The method also includes determining a proper strategy to meet the target sending rate for the next set of the plurality of packets. | 03-25-2010 |
| 20100080284 | RESOLVING GEOMETRIC RELATIONSHIPS AMONG VIDEO DATA UNITS - An apparatus performs efficient coding techniques to more efficiently resolve geometric relationships between video data units and thereby determine neighboring video data units for a current video data unit. The apparatus comprises a geometric resolution unit that obtains video data defining a plurality of video data units, and determines, for the current one of the plurality of video data units to be processed, a partition width and a video unit number of the current video data unit. The geometric resolution unit accesses, using the determined partition width and video unit number, a plurality of look-up tables (LUTs) to output one or more indices identifying one or more of the plurality of video data units that neighbor the current video data unit. | 04-01-2010 |
| 20100080285 | DETERMINING AVAILABILITY OF VIDEO DATA UNITS - An apparatus performs efficient coding techniques to more efficiently determine an availability of neighboring video data units determined for the current video data unit. The apparatus comprises an availability determination unit that maintains an availability counter. The availability determination unit determination unit increments the availability counter after each of the plurality of video data units are processed and determines, based on the availability counter, whether one or more of the plurality of video data units (i) have been previously processed and (ii) are available for use as neighboring video data units in the processing of a current one of the plurality of video data units video data units. The apparatus further processes the current video data unit based on the determination of whether one or more of the neighboring video data units are available. | 04-01-2010 |
| 20100080286 | COMPRESSION-AWARE, VIDEO PRE-PROCESSOR WORKING WITH STANDARD VIDEO DECOMPRESSORS - Video data is pre-processed to improve its compressibility by standard MPEG compressors for superior transmission at low data rates to standard devices. The pre-processor divides the video images into components selecting subsets of the components based on a buffer signal from the standard compressor. | 04-01-2010 |
| 20100086023 | MANAGING MULTIVIEW STREAMING VIDEO DATA COMPOSED OF FRAMES - A system for managing multiview streaming video data composed of a plurality of frames includes an encoder configured to encode multiple representations of at least one frame of the plurality of frames corresponding to multiple views using different reference frames for each of the multiple representations. The system also includes a controller configured to create a coding tree containing the plurality of frames and the multiple representations. The system further includes a data store configured to store the coding tree, wherein the controller is further configured to identify a storage constraint of the data store and to omit at least one of the multiple representations from the coding tree to cause the plurality of frames stored in the data store to remain within the storage constraint. | 04-08-2010 |
| 20100086024 | STREAMING SCALABLE VIDEO OVER FADING WIRELESS CHANNELS - A method and apparatus are provided for streaming scalable video over fading wireless channels. The method includes building a model relating to a relationship between an average data rate and an average peak signal-to-noise ratio for a video sequence encoded using scalable video coding and having a base layer and one or more enhancement layers. The method also includes computing a vector relating to a set of average data rates for a particular boundary point on an achievable rate region for a transmission strategy. The boundary point is a function of a parameter set for a plurality of users. The achievable rate region is based upon the model. The method further includes scheduling the plurality of users to receive the video sequence over a wireless channel, such that at a given transmission time slot a particular one of the plurality of users associated with a maximum value is selected. The maximum value is based on the vector and a channel capacity available to the particular one of the plurality of users. | 04-08-2010 |
| 20100091839 | Flexible redundancy coding - Various disclosed implementations allow a flexible amount of redundancy to be used in coding. In one general implementation, information is accessed for determining which of multiple encodings of at least a portion of a data object to send over a channel. A set of multiple encodings is determined for sending over the channel, with the set including at least one and possibly more of the multiple encodings, and the number of encodings in the set being based on the accessed information. In a more particular implementation, the redundant slice feature of the H.264/AVC coding standard is used, and a variable number of redundant slices is transmitted for any given picture based on current channel conditions. | 04-15-2010 |
| 20100091841 | SYSTEM AND METHOD OF OPTIMIZED BIT EXTRACTION FOR SCALABLE VIDEO CODING - A device for use with a frame generating portion that is arranged to receive picture data corresponding to a plurality of pictures and to generate encoded video data for transmission across a transmission channel having an available bandwidth. The frame generating portion can generate a frame for each of the plurality of pictures to create a plurality of frames. The encoded video data is based on the received picture data. The device includes a distortion estimating portion and inclusion determining portion and an extracting portion. The distortion estimating portion can estimate a distortion. The inclusion determining portion can establish an inclusion boundary based on the estimated distortion. The extracting portion can extract a frame from the plurality of frames based on the inclusion boundary. | 04-15-2010 |
| 20100098153 | System and Method to Record Encoded Video Data - A system includes a network interface to receive video packet data encoding video data from a remote server. The system includes a hardware decoder operable to decode a first type of encoded video data but not operable to decode a second type of encoded video data. The system also includes a software decoder to decode the second type of encoded video data. The system also includes a controller to determine whether the received video packet data includes the second type of encoded video data and to route the video packet data to the software decoder when the video packet data includes the second type of encoded video data. | 04-22-2010 |
| 20100098154 | METHODS AND APPARATUS FOR VIDEO USABILITY INFORMATION (VUI) FOR SCALABLE VIDEO CODING (SVC) - There are provided methods and apparatus for video usability information (VUI) for scalable video coding (SVC). An apparatus includes an encoder for encoding video signal data into a bitstream. The encoder specifies video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element. The video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding. | 04-22-2010 |
| 20100098155 | Parallel CABAC Decoding Using Entropy Slices - A method of video encoding is provided that includes performing context-adaptive binary arithmetic coding (CABAC) on a plurality of syntax element values in a slice to generate a plurality of entropy-encoded syntax element values, generating an entropy slice header to identify the plurality of entropy-encoded syntax element values as an entropy slice, wherein the entropy slice header comprises context model initialization information, and outputting the entropy slice header and the plurality of entropy encoded syntax element values. | 04-22-2010 |
| 20100104007 | METHOD AND DEVICE FOR VIDEO-STREAM FRAME RATE ADAPTATION, AND FIELD PROGRAMMABLE GATE ARRAY CHIP AND VIDEO STREAM PROCESSING APPARATUS - This invention provides a method and device for video-stream frame rate adaptation. The method includes: allocating a buffer space for each of at least one video conference room respectively and dividing the buffer space into at least one segment, each segment of which is used for buffering a video frame; and performing following steps for each of the at least one video conference room: generating a pulse signal for the video conference room periodically according to a certain pulse rate; and performing a data writing operation for a segment of the corresponding buffer space at an input-video-stream frame rate of the video conference room, and performing a reading operation for a segment of the buffer space at an output-video-stream frame rate. This invention also provides an FPGA chip and a video stream processing apparatus. The invention simplifies frame rate adaptation design, and reduces system processing overhead during the frame rate adaptation. | 04-29-2010 |
| 20100118936 | IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, IMAGE COMMUNICATIONS SYSTEM AND CODED BIT STREAM CONVERTING APPARATUS - An image decoding apparatus is capable of decoding coded bit streams with different coding schemes. The image decoding apparatus includes a coding scheme decision section for deciding a coding scheme from coding scheme identification information multiplexed into a coded bit stream, a setting unit for setting header information on a second coding scheme in accordance with header information in a first coding scheme, and a decoder for decoding image coded data in the first coding scheme in response to the header information on the second coding scheme, which is set. | 05-13-2010 |
| 20100135383 | ENCODER WITH MULTIPLE RE-ENTRY AND EXIT POINTS - An encoder is disclosed that is partitioned into discrete hardware modules. The discrete modules include multiple re-entry and exit points that allow enhanced control by software. The software can control the discrete modules during the encoding process and make adjustments according to CPU bandwidth and/or user requirements allowing for enhanced quality control and seamless hardware/software operations. In one embodiment, a media stream is received into an encoder that includes a pipeline of multiple hardware stages for encoding. An intermediate result is provided from at least one of the hardware stages to an encoding control module that processes the intermediate result to determine configuration instructions for a next hardware stage in the pipeline. Thus, the encoding process can be modified dynamically through hardware and software interactions as the media stream progresses through the pipeline of the encoder. | 06-03-2010 |
| 20100135385 | Method for decoding a video signal - A method for efficiently decoding a video signal is disclosed. The method for decoding a video signal based on fine granularity scalability (FGS) includes acquiring picture identification information indicating a reference picture of a current block, and decoding the current block using the reference picture. A base layer reference picture and an enhanced layer reference picture corresponding thereto have the same picture identification information. Accordingly, it is possible to minimize a problem caused in a procedure for decoding a video signal due to transmission error. | 06-03-2010 |
| 20100142613 | METHOD FOR ENCODING VIDEO DATA IN A SCALABLE MANNER - The invention concerns a method for encoding video data in a scalable manner according to H.264/SVC standard. The method comprises the steps of
| 06-10-2010 |
| 20100142614 | INTER-VIEW PREDICTION - At least one disclosed method and apparatus relate to inter-view prediction with different resolution reference picture. A particular method includes accessing at least a portion of an encoded picture ( | 06-10-2010 |
| 20100150224 | METHOD AND DEVICE FOR CODING DATA IN A SCALABLE STREAM - The invention relates to a method of and a device for coding data in a scalable stream organized in units, characterized in that an indication is given in the header of an SVC NAL unit as to whether this NAL unit can be truncated or not in an adaptation operation for the scalable stream concerned | 06-17-2010 |
| 20100150225 | Adaptive Frequency Domain Filtering For Phase Plane Correlation - In a Phase Plane Correlation (PPC) process, using adaptive frequency domain filtering to aid in generating candidate motion vectors. It is determined when it is beneficial to pre-filter an input image, prior to a PPC process. This results in more reliable and consistent PPC surfaces than otherwise. The filter is applied in the frequency domain where time-domain convolution becomes a much more efficient component-wise multiplication with an in-place window. An energy measure of the high-frequency content in the computed Fourier surfaces gauges the degree of high frequency content in the image. First, the Fourier transform of the two images is computed. Then, the high-frequency content is estimated from the Fourier surfaces. A window function is computed as a function of the high-frequency energy. The window is applied to the Fourier surfaces. Then, the modified Fourier surfaces are fed into the PPC process. | 06-17-2010 |
| 20100158103 | COMBINED SCHEME FOR INTERPOLATION FILTERING, IN-LOOP FILTERING AND POST-LOOP FILTERING IN VIDEO CODING - In one example, this disclosure describes filtering techniques for filtering of video blocks of a video unit. The filtering techniques may select one or more different types of filtering for each video block of the video unit based on various factors such as whether the video block is inter-coded or intra-coded, and whether adaptive interpolations were preformed during a motion compensation process during the encoding of the video block. When adaptive interpolations were performed, the adaptive interpolations may provide a level of filtering that renders additional filtering unnecessary or undesirable in some cases. | 06-24-2010 |
| 20100166058 | Temporary Decoder Apparatus and Method - A computer-implemented system and method for streaming video from a server to a client are described. For example, a method according to one embodiment comprises: receiving at the server a request for video content from the client; in response to the request, determining the hardware/software configuration of the client; generating and/or selecting a temporary decoder based on the hardware/software configuration of the client; transmitting the temporary decoder to the client, the client installing the temporary decoder; encoding and streaming the requested video content from the server to the client, the video content being encoded based on the capabilities of the temporary decoder, the video content being decoded by the temporary decoder and rendered on the client; detecting that the client has ended the session with the server; and in response to detecting that the client has ended the session, temporarily disabling and/or removing the temporary decoder from the client. | 07-01-2010 |
| 20100172410 | ENCODING DEVICE, METHOD FOR ADJUSTING TARGET AMOUNT OF CODE AND RECORD MEDIUM - An encoding device includes an encoding unit that encodes image data, a computing unit that calculates a target amount of picture code for each picture when the image data is encoded, a selection unit that selects an adjustment coefficient corresponding to the position of a picture within a unit of image processing from adjustment coefficients that have an alternating sequence of maximum values and minimal values, and an adjusting unit that adjusts the target amount of picture code by multiplying the target amount of picture code calculated by the computing unit by the adjustment coefficient selected by the selection unit. | 07-08-2010 |
| 20100183068 | METHODS AND APPARATUS FOR REDUCING CODING ARTIFACTS FOR ILLUMINATION COMPENSATION AND/OR COLOR COMPENSATION IN MULTI-VIEW CODED VIDEO - There are provided methods and apparatus for reducing coding artifacts for illumination compensation and/or color compensation in multi-view coded video. An apparatus includes an encoder for encoding at least one block in at least one picture for at least one view of multi-view video content. The encoder has a deblocking filter for performing adaptive deblocking filtering on the at least one block responsive to an indication of at least one of illumination compensation and color compensation being used for the at least one block | 07-22-2010 |
| 20100189173 | METHOD AND APPARATUS FOR VIDEO CODING AND DECODING - A method comprises encoding a first view component of a first view of a multiview bitstream; and encoding a second view component of a second view; wherein the encoding of the second view component enables generating of a reference picture list for the second view component to include at least one of the following: (a) a first field view component based on the first view component or (b) a first complementary field view component pair including the first view component. | 07-29-2010 |
| 20100195713 | Buffer Based Rate Control in Video Coding - A device and method of controlling bitrate in video coding of a sequence of frames including series of Inter frames separated by Intra frames, wherein the coded frames are validated in a video buffering device prior to transmission of the coded frames and wherein the method comprises: measuring frame complexity in the sequence of frames; for each Inter frame, calculating a target buffer level of the video buffering device in relation to a distance between the Inter frame and a next Intra frame; for each Inter frame, calculating a target frame size in relation to the distance between the Inter frame and the next Intra frame, the measured frame complexity, a current buffer level of the video buffering device and the calculated target buffer level of the video buffering device; and using the calculated target frame size to control bitrate in video coding of the sequence of frames. | 08-05-2010 |
| 20100195714 | Inter-layer prediction method for video signal - The present invention relates to a method for conducting interlayer texture prediction in encoding or decoding of video signal. The present method constructs a pair of frame macro blocks from a single field macro block or vertically-adjacent two field macro blocks of a base layer, and using texture information of the constructed pair of frame macro blocks in interlayer texture prediction of a pair of frame macro blocks of a current layer. | 08-05-2010 |
| 20100195715 | METHOD AND APPARATUS FOR ADAPTIVE FRAME PREDICTION - An adaptive frame prediction method includes: using at least one block partition method to partition an MB that needs to perform intra-frame prediction; using at least one prediction mode to predict each sub-block in each block partition result and obtaining a sub-block residual of a current sub-block; selecting multiple transformation methods according to the sub-block type to transform each sub-block residual and obtain the code-rate distortion ratio of the current sub-block; performing frame prediction for the MB according to the block partition method, the prediction mode, and the transformation method corresponding to the code-rate distortion ratio of a minimum value among all code-rate distortion ratios. An adaptive prediction apparatus disclosed herein includes: a block partition module, a predicting module, a transforming module, a selecting module, and a frame predicting module. The method and the apparatus herein perform the intra-frame or inter-frame coding flexibly, get more adaptive to the local texture statistic features of the MBs, and improve the coding efficiency. | 08-05-2010 |
| 20100202511 | METHOD FOR REDUCING ARBITRARY-RATIO UP-SAMPLING OPERATION USING CONTEXT OF MACROBLOCK, AND METHOD AND APPARATUS FOR ENCODING/DECODING BY USING THE SAME - Disclosed are a method for effectively up-sampling an image using information of neighboring blocks, and a method and apparatus of scalable video encoding/decoding using the same. The method for up-sampling a low resolution image corresponding to a high resolution image having an arbitrary image up-sampling ratio includes determining whether the low resolution image is inter-mode data, and performing an image up-sampling adaptively according to a macroblock mode of the low resolution image, when the low resolution image is the inter-mode data. | 08-12-2010 |
| 20100208793 | INFORMATION PROCESSING APPARATUS AND METHOD, RECORDING MEDIUM, AND PROGRAM - An information processing apparatus for decoding compression-coded video data, including: at least one decoder that decodes the compression-coded video data; and a controller than controls processing executed by the decoder, wherein the controller, when a picture at a head of a decoding processing unit is an I-picture or a P-picture among decoded pictures output from the decoder, controls the decoder so that a decode start timing at which the decoder starts decoding and a display output timing at which the decoder starts outputting the decoded pictures are displaced from each other by a first predetermined number of pictures. | 08-19-2010 |
| 20100208794 | IMAGE CODING APPARATUS AND IMAGE CODING METHOD - To provide an image coding apparatus capable of completing a coding process within a predetermined period. An image coding apparatus, which codes an input image on a block basis using pipeline processing, includes: a coding unit which generates coded data on a block basis, by coding the input image; a switching unit which selects and outputs either the coded data or uncompressed image data corresponding to the coded data; a judging unit which judges, on a block basis, whether the code amount of the coded data is larger than a predetermined threshold; and a control unit which changes, to a predetermined specified coding type, the coding type of a first block and the coding type of a second block which is at least one of blocks currently being pipeline-processed, when the code amount of coded data generated by coding the first block is judged to be larger than the threshold. The switching unit outputs the uncompressed image data corresponding to the coded data when the coding type of the coded data is the specified coding type. | 08-19-2010 |
| 20100208796 | METHODS AND APPARATUS FOR INCORPORATING VIDEO USABILITY INFORMATION (VUI) WITHIN A MULTI-VIEW VIDEO (MVC) CODING SYSTEM - There are provided methods and apparatus for incorporating video usability information (VUI) within multi-view video coding (MVC). An apparatus includes an encoder for encoding multi-view video content by specifying video usability information for at least one selected from: individual views, individual temporal levels in a view, and individual operating points. Further, an apparatus includes a decoder for decoding multi-view video content by specifying video usability information for at least one selected from: individual views, individual temporal levels in a view, and individual operating points. | 08-19-2010 |
| 20100215095 | VIDEO SCALABLE ENCODING METHOD AND DECODING METHOD, APPARATUSES THEREFOR, PROGRAMS THEREFOR, AND RECORDING MEDIA WHERE PROGRAMS ARE RECORDED - A video scalable encoding method calculates a weight coefficient which includes a proportional coefficient and an offset coefficient and indicates brightness variation between an encoding target image region and a reference image region in an upper layer, calculates a motion vector by applying the weight coefficient to an image signal of a reference image region as a search target and executing motion estimation, and generates a prediction signal by applying the weight coefficient to a decoded signal of a reference image region indicated by the motion vector and executing motion compensation. Based on encoding information of an immediately-lower image region in an immediately-lower layer, which is present at spatially the same position as the encoding target image region, a data structure of the weight coefficient is determined. When the immediately-lower image region performed interframe prediction in the immediately-lower layer, the method identifies an immediately-lower layer reference image region that the immediately-lower image region used as a prediction reference for motion prediction, and calculates the weight coefficient by applying a weight coefficient that the immediately-lower image region used in weighted motion prediction to a DC component of an image region in the upper layer, which is present at spatially the same position as the immediately-lower layer reference image region, and assuming a result of the application as a DC component of the immediately-lower image region. | 08-26-2010 |
| 20100220781 | MOVING PICTURE DECODING APPARATUS - A moving picture decoding apparatus capable of performing time-division decoding processing with the least possible idle time by making the best use of a decoder includes: a buffer memory storing moving picture streams of channels; a video decoder which decodes the moving picture streams of channels read out from the buffer memory; a frame buffer which stores moving picture data of the moving picture streams decoded by the video decoder; a display control unit which reads out the moving picture data from the frame buffer and outputs a moving picture signal corresponding to the moving picture data; and a decoding control unit which causes the video decoder to decode the moving picture streams in a time division manner by switching the moving picture streams which the decoding control unit supplies from the buffer memory to the video decoder. | 09-02-2010 |
| 20100220782 | VIDEO CODING DEVICE AND VIDEO CODING METHOD - A video coding device ( | 09-02-2010 |
| 20100226428 | ENCODER AND DECODER CONFIGURATION FOR ADDRESSING LATENCY OF COMMUNICATIONS OVER A PACKET BASED NETWORK - An encoder for sending encoded video over a public packet-based communication network to a distribution server. The encoder comprises an encoder engine adapted for receiving video content and for encoding the received video content using a predefined encoding algorithm. The encoder also has a send buffer adapted for configuring the encoded content as an encoded video stream expressed as a plurality of packets for transmitting over the network, such that the send buffer has send buffer settings compatible with receive buffer settings associated with the distribution server, such that the distribution server is adapted for subsequent distribution of the encoded video stream over the network to a decoder having the algorithm for use in decoding of the encoded video stream, such that the socket configuration is between the send buffer of the encoder and the receive buffer of the distribution server. | 09-09-2010 |
| 20100246668 | APPARATUS, ARRANGEMENT, METHOD AND COMPUTER PROGRAM PRODUCT FOR DIGITAL VIDEO PROCESSING - An apparatus, an arrangement, a method and a computer program product for digital video processing are disclosed. A digital video processing apparatus includes a processor ( | 09-30-2010 |
| 20100246669 | SYSTEM AND METHOD FOR BANDWIDTH OPTIMIZATION IN DATA TRANSMISSION USING A SURVEILLANCE DEVICE - Systems and methods for bandwidth optimization in data transmission using a surveillance device are described here. In one aspect, embodiments of the present disclosure include a method for protecting data security and optimizing bandwidth. The method, which may be embodied on a system, includes computing a checksum value of a data block, storing the checksum value of the data block in a computer readable storage medium, transmitting the data block to a remote server, computing an updated checksum value of an updated data block at a subsequent time, and/or comparing the updated checksum value with the checksum value stored in the computer-readable storage medium. In response to determining that the updated checksum value is not equal to the checksum value, the updated data block can be transmitted to the remote server. | 09-30-2010 |
| 20100246670 | METHOD FOR GENERATING VIDEO DATA FOR TRICK PLAY - A transmission server reads out encoded data files from storage medium such as memory in itself and removable medium, and transmits the read-out file to the reproduction apparatus upon the request from the reproduction apparatus. A plurality of encoded video files is corresponding to an AV content. These encoded data files correspond to different reproduction modes respectively. The transmission server transmits an encoded file to the reproduction apparatus which corresponds to the requested AV content and the requested reproduction mode. The amount of the fast-forward data is reduced than that of the original data, since the fast-forward data is a part of the original data. | 09-30-2010 |
| 20100254448 | Selective Local Adaptive Wiener Filter for Video Coding and Decoding - An adaptive Wiener filter may be applied to improve coding efficiency because of information lost during quantization of the video encoding process. The Wiener filter may be selectively applied globally to an entire picture or locally to portions of the picture. Histogram segmentation may be used to select pixels for Wiener filtering in some embodiments. The Wiener filter may be adaptively applied to histogram bins, improving coding efficiency in some cases. | 10-07-2010 |
| 20100254449 | METHOD AND DEVICE FOR CONTINUOUS ADAPTATION OF CODING PARAMETERS TO A VARIABLE USER-DATA RATE - A method and a device for continuous adaptation of coding parameters to a variable user-data rate of a datastream composed of data frames. Data packets and ensembles are received and associated with services for mobile receivers. The transmission requirement of the next ensemble is determined based on the buffered data packets. Optimized coding parameters for the ensemble in the next data frame are then determined based on certain factors, such as the transmission requirement for the uncoded ensemble and the determined transmission capacity. | 10-07-2010 |
| 20100260255 | METHOD AND SYSTEM FOR CLUSTERED FALLBACK FOR FRAME RATE UP-CONVERSION (FRUC) FOR DIGITAL TELEVISIONS - A video decoder may be operable to divide a video frame into clusters during frame rate up-conversion (FRUC) process. The video decoder may be operable to determine an error associated with the displayed frame difference (DFD) for each of the clusters and switch between frame interpolation and frame repetition based on the error. A DFD histogram may be computed for each cluster and a condition for clustered fallback based on one or more of the DFD histograms may be determined. The clustered fallback may be entered if the condition for clustered fallback is met. The clustered fallback may be entered locally for one or more of the clusters of the video frame. The clustered fallback may be entered in such a way that if the number of consecutive video frames which meet the condition for clustered fallback is greater than a particular threshold value. | 10-14-2010 |
| 20100266009 | Transcoding Video Data - Video data is transcoded on the fly to produce a progressive download viewed while the data is being received while streaming and/or may be downloaded and played later. An analyser analyses a portion of an input video data file to determine coded characteristics of encoded input video and determines an expected data volume. A generator generates a file header for output video data that includes an indication of the expected volume thereof. A transcoder transcodes the input video data to produce encoded output video data. The output interface supplies the encoded output video data with the file header as a stream to a receiving device. In a first embodiment, the expected volume of data in the header is overestimated and blank video chunks added. In an alternative embodiment, the expected data of volume is underestimated and compression parameters are modified during the transcoding process. | 10-21-2010 |
| 20100266010 | CODING METHOD, DECODING METHOD, CODING APPARATUS, DECODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - A coding method includes: defining an access unit; and coding each of the pictures included in the access unit, for each access unit. The defining includes: determining a unit of coding for determining whether the pictures included in the access unit are to be uniformly coded on a per-field basis or on a per-frame basis; and determining a field type for determining whether the pictures are to be uniformly coded as top fields or bottom fields when it is determined that the pictures included in the access unit are to be coded on a per-field basis. In the coding, each of the pictures is coded for each access unit in a format determined in the determining of a unit of coding and in the determining of a field type. | 10-21-2010 |
| 20100272171 | SELF-ADAPTING CODE RATE DISTRIBUTION METHOD OF VIDEO IMAGE MACRO-BLOCK LEVEL - A self-adapting code rate distribution method of video image macro-block level is provided. The method carries out analysis processing in units of macro blocks, a bit distribution model which combines bits number of a macro block level with the macro block energy is used, so that the bit distribution of each macro block is combined with the macro block energy, in which the macro block energy is obtained through extracting and abstracting the macro block characters. The above model can primely combine the code rate control arithmetic with the nature character of the image, then the accuracy of the code rate control can be improved, the code quality can be controlled at the same time, and the quality change in space of the image can be smoothed, the image subjective quality can be improved. | 10-28-2010 |
| 20100272172 | IMAGE ENCODING APPARATUS AND IMAGE DECODING APPARATUS - An image encoding apparatus ( | 10-28-2010 |
| 20100278230 | Method And System For Scalable Video Compression And Transmission - A video processing device receives video data and transmits the video to a display device at a new bit rate that is dynamically adjusted based on variable conditions. The new bit rate is adjusted, at least, by scaling the video and/or a residual image and may be adjusted utilizing compression functions, compression parameters, scale factor, frame rate, color space, and chroma sub-sampling. The display receives video at the adjusted new bit rate and decompresses the video in accordance with corresponding adjustments in the video processing device. Bit rate determination is based on variable operating conditions, display information, image quality, BER, packet error, SNR, desired level of compression, energy consumption, link congestion and display capabilities. Video may be scaled prior to compression. The video may comprise a frame and/or a slice. DPCM, H. | 11-04-2010 |
| 20100278231 | Post-decoder filtering - A method of providing post-processing information to client decoders. The method includes encoding a video, by an encoder and determining one or more parameters of sharpening, color space bias correction or contrast correction for post-processing of a frame of the encoded video. The method further includes transmitting the encoded video with the determined one or more parameters to a decoder. | 11-04-2010 |
| 20100284456 | Execution Units for Context Adaptive Binary Arithmetic Coding (CABAC) - A digital processor for recovering a source bitstream from an encoded bitstream that has been encoded according to a context adaptive binary arithmetic coding (CABAC) algorithm. The processor includes a first execution unit and a second execution unit. The first execution unit generates first execution data by operating on a first register and a second register, and stores the first execution data in the first register. The first execution data includes a current output bit, a temporary range value and a temporary offset value. The current output bit corresponds to a bit of the source bitstream. The second execution unit generates second execution data by operating on the first register and the second register, and stores the second execution data in the second register. The second execution data includes a normalized range value and a normalized offset value. | 11-11-2010 |
| 20100284457 | CROSS-LAYER OPTIMIZATION FOR TRANSMISSION OF VIDEO CODEC OVER WIRELESS NETWORKS - A method and system for configuring at least one video codec at run-time are disclosed. A major limitation for wireless video communication on portable devices is the limited energy budget. In one aspect, the disclosed method and system minimize the energy cost of the two main energy consumers in such a wireless video device, i.e., the energy for video encoding and wireless communication tasks, via a cross-layer approach that explores the trade-off between coding and communication energies. | 11-11-2010 |
| 20100290521 | Method and Device For Selecting Best Mode Of Intra Predictive Coding For Video Coding - A method for selecting the best mode of intra prediction coding for video coding applied in video coding and decoding field is provided. The method includes: constructing a rate distortion cost function based on an estimated rate to be encoded; computing the rate distortion costs for all predictive modes by using the constructed function, and selecting the predictive mode with the minimum rate distortion cost as the best mode of intra prediction coding according to the computing result. Accordingly, a device for selecting the best mode of intra prediction coding for video coding is provided. By the method, the selected mode is closer to the best mode selected by original rate distortion optimization model, thereby the need to code every block actually in the process of rate distortion optimization is effectively avoided. | 11-18-2010 |
| 20100290522 | IMAGE TRANSMISSION METHOD AND IMAGE TRANSMITTER - The control unit verifies whether or not the coded data of one frame has been transmitted within each frame period. When it hasn't, the control unit increases the compression ratio of a compression unit. When the coded data of one frame has been transmitted, the control unit compares the amount of coded data against a first and a second threshold value. When the amount of coded data is greater than or equal o the first threshold value, the control unit increases the compression ratio of the compression unit. When it is less than or equal to the second thresh hold, the control unit lowers the compression ratio of the compression unit. | 11-18-2010 |
| 20100290523 | MOVING IMAGE ENCODING METHOD AND APPARATUS - A moving image encoding method of encoding a moving image while switching between variable-length encoding schemes. In this method, a continuous unit to be continuously reproduced is determined (S | 11-18-2010 |
| 20100296575 | OPTIMIZED ALLOCATION OF MULTI-CORE COMPUTATION FOR VIDEO ENCODING - Video encoding computations are optimized by dynamically adjusting slice patterns of video frames based on complexity of each frame and allocating multi-core threading based on the slices. The complexity may be based on predefined parameters such as color, motion, and comparable ones for each slice. Allocation is determined based on capacity and queue of each processing core such that overall computation performance for video encoding is improved. | 11-25-2010 |
| 20100296576 | PREAMBLE FOR A DIGITAL TELEVISION SYSTEM - The present invention concerns a system for transmitting a plurality of modes of digital television signals within the same transmission channel where one transmission mode is more robust than another mode. The present invention also concerns a system for receiving and decoding such signals. More specifically, an aspect of the present invention involves a method and an apparatus for utilizing a proper length of preamble data for the improvement of reception. Furthermore, another aspect of the present invention involves a method and an apparatus for inserting a preamble into a proper place in a transmitted data stream relative to the filed synchronization data. Another aspect of the present invention involves a method and an apparatus for decoding trellis-coded data, using the predetermined preamble data. | 11-25-2010 |
| 20100303146 | MECHANISM FOR DYNAMICALLY CHANGING STREAMING VIDEO QUALITY - Method and apparatus for dynamically changing streaming video quality are described herein. In one embodiment, a network traffic condition of a network and a local processing bandwidth of a client are periodically determined. A data compression method and/or compression rate is dynamically selected that is most appropriate to transmit a video frame to the client over the network in view of the determined network traffic condition and the local processing bandwidth of the client. The video frame is then compressed using the selected compression method and/or compression rate and sent over to a client to be rendered at the client. | 12-02-2010 |
| 20100303147 | ENCODING APPARATUS AND ENCODING METHOD, AND DECODING APPARATUS AND DECODING METHOD - An encoding apparatus includes a receiving section receiving syntax information defined by an encoding standard, a first encoding section encoding the received syntax information to generate encoded information, a transferring section transferring transmission encoded information based on the encoded information generated by the first encoding section, a second encoding section encoding reproduced encoded information reproduced from the transferred transmission encoded information, a conversion section converting the encoded information encoded by the first encoding section into redefined encoded information, to generate the transmission encoded information in accordance with the transfer capacity of the transferring section and the processing speed of encoding in each of the first encoding section and the second encoding section so as not to cause delay in encoding in the first encoding section or the second encoding section, and an inverse conversion section inversely converting the converted redefined encoded information to generate the reproduced encoded information. | 12-02-2010 |
| 20100309973 | METHOD FOR SCALING VIDEO CONTENT BASED ON BANDWIDTH RATE - A method for scaling video content based on bandwidth rate is disclosed. Wherein, a plurality of target shots and non-target shots are recognized from shots of a video. A background and at least one foreground object are separated from the video frame of the target shot. The present invention method provides a plurality of bandwidth levels, and one among them is selected in advance. At least one foreground object is selected and pasted on the background based on the selected bandwidth level, so as to obtain at least one recombined target shot. The recombined target shot, the non-target shot or other recombined target shot can be merged to form a recombined video unit based on the selected bandwidth level. Therefore, the present invention proposes video content of scalability based on bandwidth rate to provide the different video bit-stream size, so that viewer can get the high quality video under the lower bandwidth rate. | 12-09-2010 |
| 20100316118 | ADAPTIVE MOTION INFORMAITON COST ESTIMATION WITH DYNAMIC LOOK-UP TABLE UPDATING - Adaptive motion information cost estimation is achieved in processing video information. A transmission cost is estimated that is associated with encoding a motion vector difference (mvd) in motion vectors that describe a motion characteristic of the video information. The mvd is encoded based on minimizing a rate estimation mismatch associated with the motion vectors. The encoding step includes computing a bit count associated with the mvd using CABAC. A value is indexed that corresponds to the cost from one or more entries in the lookup table. The cost relates to context or content characteristics associated with the video information. The lookup table is adaptively updated based on a change in the contextual information or content characteristics. The value is dynamically adjustable based on the change. | 12-16-2010 |
| 20100329328 | USING SCALABLE CODECS FOR PROVIDING CHANNEL ZAPPING INFORMATION TO BROADCAST RECEIVERS - Scalable codecs are used for transmitting channel zapping data for one or more programs using timeslicing. The main codec layer may be utilized also for the zapping data, and the higher layers may be used in the primary channels. Zapping data may be provided to mobile terminals via a wireless multicast network, such as a DVB-H network, using timeslicing and providing the scalably encoded zapping data as part of the source stream. | 12-30-2010 |
| 20100329330 | VIDEO-INFORMATION ENCODING METHOD AND VIDEO-INFORMATION DECODING METHOD - A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted. | 12-30-2010 |
| 20100329331 | VIDEO-INFORMATION ENCODING METHOD AND VIDEO-INFORMATION DECODING - A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted. | 12-30-2010 |
| 20110002380 | Method and apparatus for predictive frame selection supporting enhanced efficiency and subjective quality - A method and apparatus are provided for predictive frame selection supporting enhanced efficiency and subjective quality. The apparatus includes an encoder for encoding a picture using a selection scheme that selects between encoding the picture as a single direction inter predictive picture type and a bi-directional inter predictive picture type based on coding efficiency and a determination of a flickering artifact resulting from coding the picture as the bi-directional inter predictive picture type. | 01-06-2011 |
| 20110013692 | Adaptive Video Transcoding - Embodiments of the invention describe a method for transcoding an input video in a first encoded format to an output video in a second encoded format, wherein the videos include a set of segments and each segment includes frames. First, the method is determining a set of downsample resilient segments in the input video and a set of full-resolution segments in the input video. Next, the method is downsampling the set of downsample resilient segments to produce a set of downsampled segments and transcoding the input video using the set of full-resolution segments and the set of downsampled segments to produce the output video including at least two segments with different resolutions. | 01-20-2011 |
| 20110019730 | IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM - Image encoding apparatus | 01-27-2011 |
| 20110019731 | Adaptive weighting of reference pictures in video encoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture. | 01-27-2011 |
| 20110019732 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture. | 01-27-2011 |
| 20110019733 | Adaptive weighting of reference pictures in video encoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture. | 01-27-2011 |
| 20110019734 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture. | 01-27-2011 |
| 20110026582 | SYSTEM AND METHOD OF COMPRESSING VIDEO CONTENT - A method of interpolating a pixel value is disclosed and may include locating a missing pixel. Further, the method may include determining a plurality of closest pixels, determining a value for each of the plurality of closest pixels, and determining a distance between the missing pixel and each of the plurality of closest pixels. The method may also include classifying each of the plurality of closest pixels as either an edge-pixel or a non-edge pixel and determining a value of the missing pixel at least partially based on the value of each of the plurality of closest pixels, the distance between the missing pixel and each of the plurality of closest pixels, and a classification of each of the plurality of closest pixels. | 02-03-2011 |
| 20110026583 | METHOD, DEVICE, AND COMPUTER-READABLE MEDIUM FOR VIDEO CODING AND DECODING - A method, device, and computer-readable medium for video coding or decoding wherein a number of blocks of residual picture data respectively stored in a number of first data arrays in a memory of a computer device represent at least a part of a video picture to be coded or decoded. The method includes calculating DC coefficients respectively associated with the blocks and inserting the DC coefficients in a second data array in a block associative order, classifying each of the blocks as skipped in response to an associated DC coefficient being lower than a predefined threshold, and non-skipped in response to the associated DC coefficient being higher than a predefined threshold, generating a bit mask containing 1-bits in positions corresponding to positions in the second data array having DC coefficients higher than the predefined threshold, and 0-bits in positions corresponding to positions in the second data array having DC coefficients lower than the predefined threshold. | 02-03-2011 |
| 20110026584 | STATISTICAL REMULTIPLEXING OF COMPRESSED VIDEO SEGMENTS - Compressed digital video bitstreams are segmented into video segments. A staging processor performs transrating on the original video segments and generates several transrated output video segments. The output video segments are combined into a video block for further distribution. A bit rate switch selects among the transrated video segments from the video block to provide a statistically multiplexed output bitstream. The bit rate switch can also select local stream segments, such as advertisements, for content insertion purposes. A transprocessor including multiple encoder output features is also provided. | 02-03-2011 |
| 20110026586 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; | 02-03-2011 |
| 20110026587 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; | 02-03-2011 |
| 20110026588 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture. | 02-03-2011 |
| 20110026589 | Adaptive weighting of reference pictures in video encoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; | 02-03-2011 |
| 20110026590 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture. | 02-03-2011 |
| 20110032982 | Method and System for Remote Viewing of Static and Video Images - Methods and systems are provided that allow a user to remotely access another computer and view its desktop without regard to whether that desktop has a relatively static image typical of a computer desktop, or whether it is playing a video, such as from a DVD. Relatively static screens may be displayed along with full motion video in such systems. These systems may also provide for both short mouse lag time when full motion video is displayed. In one implementation, hardware and firmware captures and encodes the video from the remote computer, and software on the client computer decodes the encoded video and displays it to the user. | 02-10-2011 |
| 20110032983 | Probabilistic Bit-Rate and Rate-Distortion Cost Estimation for Video Coding - A method of video encoding is provided that includes computing spatial variance for video data in a block of a video sequence, estimating a first bit-rate based on the spatial variance, a transform coefficient threshold, and variance multiplicative factors empirically determined for first transform coefficients, and encoding the block based on the first bit-rate. | 02-10-2011 |
| 20110032985 | METHOD AND APPARATUS FOR ADAPTIVE DECODING - An adaptive decoding apparatus and a method of adaptive decoding are disclosed. The adaptive decoding apparatus configuring a decoding process adaptively based on an encoding format of inputted data includes: a separating part configured to separate decoding module configuration information and encoded data from inputted data received from an outside and to output the decoding module configuration information and the encoded data; a decoding module storing part configured to store a plurality of decoding modules, the decoding modules being configured to perform a predetermined unit of partial decoding process; a decoding module configuration information analyzing part configured to analyze the encoded data according to the decoding module configuration information and to generate and output syntax parsing control information and connection control information; and a decode executing part configured to form a reconfigured decoder by loading and connecting target decoding modules from the decoding module storing part by use of the connection control information and to decode the encoded data according to the syntax parsing control information by use of the reconfigured decoder. Accordingly, the decoding process can be adaptively configured for decoding, based on the encoding format of the inputted data. | 02-10-2011 |
| 20110051801 | METHOD AND APPARATUS FOR DETERMINING ENCODING MODE BY USING TEMPORAL AND SPATIAL COMPLEXITY - A method and apparatus for deciding an encoding mode are disclosed. The encoding mode decision apparatus comprises a temporal complexity calculator to calculate a temporal complexity of a macroblock and a mode decider to elect the encoding mode utilizing the temporal complexity. The disclosure calculates the temporal and spatial complexes for the macroblocks more accurately as well as elects the optimal encoding mode using the same resulting in a reduction of the calculation complexity when applying the rate-distortion technique along with an improvement of its processing speed. | 03-03-2011 |
| 20110058605 | IMAGE PROCESSING METHOD FOR ADAPTIVE SPATIAL-TEMPORAL RESOLUTION FRAME - The present invention relates to video image processing. An image processing method for RDO based adaptive spatial-temporal resolution frame is provided, comprising: A. computing and obtaining a condition value of a critical bit-rate by an encoder based on the input video image and a change of the target allocated bit-rate; B. comparing the condition value of the critical bit-rate with a threshold value by the encoder, and obtaining an image resolution appropriate for the target allocated bit-rate via down-sampling if the condition value of critical bit-rate is lower than the threshold, i.e., the target allocated bit-rate is lower than the critical bit-rate, otherwise performing a general encoding process; C. recovering an original resolution of the received image by a decoder via up-sampling and smoothing it. The method of the present invention may obviously reduce distortion of the decoded video image, which is resulted from over-compression or over-quantization by the encoder in low bit-rate. | 03-10-2011 |
| 20110064134 | BITRATE CONTROL DEVICE FOR CONTROLLING BITRATE OF VIDEO DATA - A bitrate control device controls bitrate of video data and includes: a setting module that sets, for each frame in the video data, a target code amount to be used in encoding the frame by an encoding module for maintaining a given bitrate; an adjusting module that adjusts the target code amount set by the setting module based on given information; and a managing module that is configured to perform: saving a code amount corresponding to an amount reduced in the target code amount by the adjusting module in a virtual storage management buffer having a given upper limit, when the adjusting module adjusts to reduce the target code amount; and withdrawing a code amount corresponding to an amount increased in the target code amount by the adjusting module from the virtual storage management buffer, when the adjusting module adjusts to increase the target code amount. | 03-17-2011 |
| 20110069750 | SYSTEM AND METHOD FOR ADAPTIVELY ALLOCATING RESOURCES IN A TRANSCODER - An adaptive transcoder is provided that includes a shared memory containing a plurality of decoder buffers to store incoming data packets, a plurality of decoder instances to control a decoding process to generate image raw data based on the incoming data packets, and a plurality of encoder instances configured to control an encoding process to generate outgoing packets based on the image raw data; and a data processing element containing a plurality of processing cores, and a core controller. Each decoder instance is paired with an encoder instance; and each decoder buffer is associated with a decoder instance. Each decoder buffer includes a monitoring element to monitor a respective decoder buffer, and provide buffer data corresponding to the status of the decoder buffer. Each encoder instance is associated with a processing core; and the core controller uses the buffer data to associate each decoder instance with a processing core. | 03-24-2011 |
| 20110069751 | Method and Apparatus for Determination of Motion Estimation Search Window Area Utilizing Adaptive Sliding Window Algorithm - A method and apparatus for motion estimation utilizing adaptive sliding window algorithm, the method includes estimating motion estimation search window size, transferring data from a previous picture relating to the search window, wherein the size of the search window is determined, and calculating motion vector of the current block by block matching the current block with data of the previous picture in search window. | 03-24-2011 |
| 20110075726 | Moving picture encoding apparatus and distribution system - A moving picture encoding apparatus divides a moving picture signal into key frames and non-key frames, encodes the key frames, predicts the non-key frames from the encoded key frames, determines an encoding rate for each non-key frame, encodes each non-key frame, and outputs an error-correcting code at the encoding rate as encoded data of the non-key frame. To determine the encoding rate, parameters related to the likelihood of prediction errors are calculated by at least two different methods for each non-key frame, the parameters are compared, one of the parameters is selected, and the encoding rate is calculated from the selected parameter. The selective use of differently calculated parameters enables an efficient encoding rate to be calculated for each non-key frame and reduces the transmission of encoded data that the decoder does not need or cannot decode. | 03-31-2011 |
| 20110075727 | VIDEO QUALITY TESTING BY ENCODING AGGREGATED CLIPS - A method includes receiving a first video clip and a second video clip. The first video clip and the second video clip are variable-bit-rate (VBR)-encoded to form a VBR-encoded aggregated video content item. The VBR-encoding of the first video clip is based on an encoding complexity of the second video clip. | 03-31-2011 |
| 20110075728 | VIDEO BITRATE CONTROL METHOD, VIDEO BITRATE CONTROL APPARATUS, VIDEO BITRATE CONTROL PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM HAVING THE PROGRAM RECORDED THEREON - A video bitrate control method and apparatus that control a generated bitrate of a picture to be encoded, based on an initial value of an allocation bitrate that is previously given to each picture are provided, wherein a difference between an allocation bitrate and an actually generated bitrate of a picture that has been encoded is obtained as an error bitrate, one of a maximum value and a minimum value of the allocation bitrate is selected for a plurality of subsequent pictures, as an allowable correction range, based on the sign of the error bitrate, the maximum value and the minimum value of the allocation bitrate being calculated based on the initial value of the allocation bitrate and a previously given constant, a difference between the allowable correction range and the allocation bitrate is obtained for the plurality of pictures, as an allowable variation bitrate, the ratio of the sum of allowable variation bitrates and the error bitrate is obtained as an update rate, a variation bitrate for the allocation bitrate is calculated for the plurality of pictures based on the allowable variation bitrate and the update rate, and the allocation bitrate of each of the plurality of pictures is updated based on the variation bitrate. | 03-31-2011 |
| 20110080944 | REAL-TIME VIDEO TRANSCODER AND METHODS FOR USE THEREWITH - A transcoder includes a direct transcoder that generates a first portion of a transcoded video stream by reusing a plurality of encoding parameters of a compressed video stream. A cascaded transcoder generates a second portion of the transcoded video stream by decoding the compressed video stream into video data in an uncompressed video format and by re-encoding the video data. A transcoding decision generator generates a transcoding indicator, based on the compressed video stream. A switching module selects the direct transcoder for the first portion of the transcoded video stream and the cascaded transcoder for the second portion of the transcoded video stream, based on the transcoding indicator. | 04-07-2011 |
| 20110080945 | APPARATUS AND METHOD FOR ADAPTING SCALABLE VIDEO CODING BITSTREAM - An apparatus and method for adapting a scalable video coding (SVC) bitstream is provided. The apparatus may include: a layer selection unit to select at least one quality layer from a plurality of quality layers contained in each of spatial layers of the SVC bitstream; a layer discarding unit to discard the at least one quality layer; and a layer dependency modification unit to modify a quality layer dependency between one or more quality layers remaining among the plurality of quality layers, or a spatial layer dependency between the plurality of spatial layers. Accordingly, it is possible to adapt the SVC bitstream where the entire quality of spatial layers is enhanced. | 04-07-2011 |
| 20110090950 | SYSTEM AND METHOD FOR ENHANCING DATA COMPRESSION USING DYNAMIC LEARNING AND CONTROL - A data compression system and method for achieving enhanced compression performance in a plurality of encoder-decoder pairs communicatively coupled in a concatenated chain is disclosed. The plurality of encoder-decoder pairs receive input data and transform the input data into compressed output data. The data compression system includes at least one quality estimator communicatively coupled to the concatenated chain to determine a plurality of quality metrics corresponding to an output from each of the plurality of encoder-decoder pairs. Further, the data compression system also includes a processing subsystem configured to optimize the operation of each of the plurality of encoder-decoder pairs based upon the plurality of quality metrics to achieve a desired level of optimization for the concatenated chain. | 04-21-2011 |
| 20110090951 | METHOD FOR SELECTING CONTENT ADAPTIVE CODING MODE - Method for selecting content adaptive coding mode is disclosed. The method can apply a critical value to update by taking the advantages of a content adaptive MCTF update method and a covered pixel detection algorithm and, at the same time, improve the image quality by selecting a block having improper motion information and converting it into a coding in screen mode. The method also provides a method for selecting content adaptive coding mode that can improve the conventional MCTF algorithm by reusing JND, which is used in content adaptive MCTF, to find a block that has improper coding information and selecting a block that has improper motion information. | 04-21-2011 |
| 20110096828 | ENHANCED BLOCK-REQUEST STREAMING USING SCALABLE ENCODING - A block-request streaming system provides for improvements in the user experience and bandwidth efficiency of such systems, typically using an ingestion system that generates data in a form to be served by a conventional file server (HTTP, FTP, or the like), wherein the ingestion system intakes content and prepares it as files or data elements to be served by the file server. A client device can be adapted to take advantage of the ingestion process as well as including improvements that make for a better presentation independent of the ingestion process. The files or data elements are organized as blocks that are transmitted and decoded as a unit, and the system is configured to provide and consume scalable blocks such that the quality of the presentation increases as more of the block is downloaded. Encoding and decoding blocks with multiple independent scalability layers can be done as well. | 04-28-2011 |
| 20110096829 | METHOD AND APPARATUS FOR ENCODING VIDEO AND METHOD AND APPARATUS FOR DECODING VIDEO, BASED ON HIERARCHICAL STRUCTURE OF CODING UNIT - An apparatus and method for encoding video data and an apparatus and method for decoding video data are provided. The encoding method includes: splitting a current picture into at least one maximum coding unit; determining a coded depth to output an encoding result by encoding at least one split region of the at least one maximum coding unit according to operating mode of coding tool, respectively, based on a relationship among a depth of at least one coding unit of the at least one maximum coding unit, a coding tool, and an operating mode, wherein the at least one split region is generated by hierarchically splitting the at least one maximum coding unit according to depths; and outputting a bitstream including encoded video data of the coded depth, information regarding a coded depth of at least one maximum coding unit, information regarding an encoding mode, and information regarding the relationship. | 04-28-2011 |
| 20110103464 | Methods and Apparatus for Locally Adaptive Filtering for Motion Compensation Interpolation and Reference Picture Filtering - Methods and apparatus are provided for locally adaptive filtering for motion compensation interpolation and reference picture filtering. An apparatus includes an encoder for encoding picture data. The encoder includes at least one locally adaptive filter for performing locally adaptive filtering for at least one of reference picture filtering and interpolation filtering with respect to the picture data. | 05-05-2011 |
| 20110103465 | ENCODING METHOD OF SCREEN FRAME AND ELECTRONIC DEVICE APPLYING THE SAME - An encoding method of screen frame and its application of electronic devices, which rapidly detect motion regions and motionless regions from lossless screen frames captured by software, and then encode the motion regions with lower image quality while encode motionless regions with higher quality to display higher quality images and smooth video at a receiving end in real-time. Furthermore, the above-mentioned encoding method is optimized for lossless screen frames which does not need complicated operations of video encoder of prior art, such as motion estimation, motion compensation, etc., so that the method can be implemented with minor system resources and lower latency delay. | 05-05-2011 |
| 20110103466 | BTSC TECHNIQUES - The disclosed BTSC encoder includes a left high pass filter means for receiving a digital left channel audio signal and for digitally high pass filtering the digital left channel audio signal and thereby generating a digital left filtered signal; a right high pass filter means for receiving a digital right channel audio signal and for digitally high pass filtering the digital right channel audio signal and thereby generating a digital right filtered signal; a matrix means for receiving the digital left and digital right filtered signals, and including means for summing the digital left and digital right filtered signals and thereby generating a digital sum signal, and including means for subtracting one of the digital left and digital right filtered signals from the other of the digital left and digital right filtered signals and thereby generating a digital difference signal; a difference channel processing means for digitally processing the digital difference signal; and a sum channel processing means for digitally processing the digital sum signal. | 05-05-2011 |
| 20110110418 | SCALABLE VIDEO CODING METHOD FOR FAST CHANNEL CHANGE TO INCREASE CODING EFFICIENCY - An apparatus encodes a video signal for providing a scalable video coded (SVC) signal comprising a base layer video coded signal and an enhancement layer video coded signal, wherein the base layer video coded signal has more random access points, e.g., Instantaneous Decoder Refresh (IDR) slices, than the enhancement layer and in those access units where the enhancement layer has an IDR slice, the base layer has a non-IDR slice. | 05-12-2011 |
| 20110116540 | Multimedia Content Handling in a Home-Network System - A method of handling multimedia digital content in a network that interconnects diverse electronic devices is provided. Multimedia digital content with associated metadata is acquired by a device on the network from a source, and characteristics of a target device on which the multimedia digital content is to be played are obtained. At least one or both of the metadata of the multimedia digital content and the characteristics of the target device are analyzed for determining rules or parameters for encoding the source multimedia digital content. After the analyzing and determining steps, the source multimedia digital content is encoded with the determined rules or parameters and the encoded multimedia digital content is transmitted to the target device. Accordingly, the encoding step produces a content adaptation that is specifically optimized for playback on the target device. A Media Interoperability Unit (MIU) and a Digital Living Network Alliance (DLNA) system are also provided. | 05-19-2011 |
| 20110122940 | METHOD AND APPARATUS FOR VC-1 TO MPEG-2 VIDEO TRANSCODING - A method for transcoding from a VC-1 format to an MPEG-2 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the VC-1 format to generate a picture; (B) determining a first mode indicator for the picture; and (C) coding the picture into an output video stream in the MPEG-2 format using one of (i) an MPEG-2 field mode coding and (ii) an MPEG-2 frame mode coding as determined from the first mode indicator. | 05-26-2011 |
| 20110129013 | METHOD AND APPARATUS FOR ADAPTIVELY DETERMINING COMPRESSION MODES TO COMPRESS FRAMES - A method and an apparatus for adaptively determining compression modes to compress images are provided. When compressing a current frame in image data, the invention inquires a motion class corresponding to a reference frame of the current frame, in which the motion class is determined according to motion information of the reference frame. Next, a threshold set corresponding to the motion class is obtained and used to determine a compression mode for compressing each of a plurality of macroblocks in the current frame. Finally, the determined compression modes are used to compress corresponding macroblocks in the current frame. | 06-02-2011 |
| 20110134994 | REAL-TIME TRANSPORT PROTOCOL (RTP) PACKETIZATION METHOD FOR FAST CHANNEL CHANGE APPLICATIONS USING SCALABLE VIDEO CODING (SVC) - An apparatus encodes a video signal for providing a scalable video coded (SVC) signal comprising a base layer video coded signal and an enhancement layer video coded signal, wherein the base layer video coded signal has more random access points, e.g., Instantaneous Decoder Refresh (IDR) slices, than the enhancement layer and in those access units where the enhancement layer has an IDR slice, the base layer has a non-IDR slice. Transmission of the SVC occurs in packet form using the Real-time Transport Protocol (RTP) such that non-random access point slices are conveyed in Simple Time Aggregation Packets (STAP), each Simple Time Aggregation Packet comprising a Payload Content Scalability Information (PACSI) Network Abstraction Layer (NAL) Unit. | 06-09-2011 |
| 20110134995 | VIDEO CODING WITH CODING OF THE LOCATIONS OF SIGNIFICANT COEFFICIENTS IN A BLOCK OF COEFFICIENTS - In known image compression, following quantisation, a very sparse distribution of significant (i.e. non-zero) amplitude coefficients of the transformed image signal may be obtained while most quantised coefficients are zeros. A costly task for a transform-based image compression in terms of resulting overall data rate is to record the locations of such significant coefficients within the coding blocks. In quartation processing, a ‘significant square’ (containing at least one non-zero amplitude coefficient in the coefficient block) is recursively divided into four smaller squares until single significant coefficients are reached, and the significance statuses of all generated squares are encoded. However, for some distribution patterns encoding the x-y-coordinates of the significant coefficients as binary numbers will lead to less coding cost. According to the invention, at least four different pattern determination or encoding modes are checked, and the encoding side selects the least costly one of these modes and transfers the corresponding mode information to the decoding side for corresponding decoding. | 06-09-2011 |
| 20110134996 | Method and System on Chip (SoC) For Adapting a Runtime Reconfigurable Hardware to Decode a Video Stream - A method and System on Chip (SoC) for adapting a runtime reconfigurable hardware to decode a video stream, wherein the video stream is of one of a plurality of video types is disclosed. The method includes determining a video type of the video stream and identifying at least one functional block of a set of functional blocks in the runtime reconfigurable hardware in response to determining the video type. A functional block of the set of functional blocks corresponds to a decoding sub function of the video type. Thereafter, the method configures the one or more functional block based on a plurality of configuration parameters of the video type. Further, the method decodes the video stream using the one or more functional blocks in response of configuring the one or more functional block. | 06-09-2011 |
| 20110142124 | PERCEPTUAL-BASED VIDEO CODING METHOD - A perceptual-based video coding method provides a perceptual-based rate-distortion (R-D) curve as a predictive R-D curve. The Lagrange multiplier for a current frame is then determined by deciding a slope, with sign reversed, of a tangent to the predictive R-D curve at a current point that is on the predictive R-D curve and closest to a previous R-D point of a previous encoded frame. The current frame is then encoded according to the determined Lagrange multiplier. | 06-16-2011 |
| 20110150073 | SCALABLE VIDEO TRANSCODING DEVICE - A transcoding device is configured to transcode a scalable video coded stream to a single layer encoded video stream for a receiving device. The transcoding device includes an interface connecting the receiving device to the transcoding device, and a transcoder. The transcoder receives the scalable video coded stream via the interface from the receiving device in response to the receiving device determining the encoded video stream includes the scalable video coded stream. The transcoder generates a single layer encoded video stream from the scalable video coded stream based on coding parameters describing a single layer encoded video stream to be generated by the transcoder. The transcoding device sends the single layer encoded video stream to the receiving device via the interface. | 06-23-2011 |
| 20110150074 | TWO-PASS ENCODER - A two-pass encoder includes a first encoding module and a second encoding module. The first encoding module is configured to encode an input video sequence in a first pass, and to determine coding decisions from the first pass. The second encoding module is configured to encode the input video sequence using the coding decisions from the first encoding module in a second pass, and to output a second pass encoded stream. At least one of the first encoding module and the second encoding module is a partial encoding module. | 06-23-2011 |
| 20110150075 | CONTEXT ADAPTIVE BINARY ARITHMETIC DECODING FOR HIGH DEFINITION VIDEO - An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to present a video signal and macroblock data in response to decoding one or more bins on a binary signal. The second circuit may be configured to, in parallel (i) generate the binary signal in response to a bitstream signal and an initial context information and (ii) calculate subsequent context information. | 06-23-2011 |
| 20110158313 | RECEPTION APPARATUS, RECEPTION METHOD, AND PROGRAM - A reception apparatus includes: a data reception unit receiving compressed/encoded data from external apparatuses; a decoding unit decoding the compressed/encoded data to obtain received data; a data processing unit performing data processing so that information based on the received data obtained from the decoding unit is displayed on corresponding display windows, respectively; a window size setting unit setting sizes of the display windows respectively corresponding to the external apparatuses; an encoding bit rate determination unit determining an encoding bit rate of each external apparatus corresponding to the size of the display window based on a correspondence relation between the size of the display window and the encoding bit rate; an information transmission unit transmitting information regarding each of the encoding bit rates to each of the corresponding external apparatuses; and a size/bit rate correspondence relation setting unit setting the correspondence relation for each of the external apparatuses. | 06-30-2011 |
| 20110164677 | Complexity Allocation for Video and Image Coding Applications - Coding method complexity types are assigned to video for combinations of coding decision levels associated with a sequence of pictures, a group of pictures, a scene, a region of the scene or picture, a block or macroblock. Multiple coding units are encoded as a function of complexity and determined from the coding decision levels. A first coding decision level is associated with determining a first complexity and a first coding method type for the sequence of pictures. A second coding decision level is associated with determining a second complexity and a second coding method type for the pictures or scene. The picture or sequence includes the coding units. A third coding decision level is associated with determining a third complexity and a third coding method type for the coding units. | 07-07-2011 |
| 20110176603 | METHOD FOR CARRYING META-DATA OVER DIGITAL VIDEO BROADCASTING-SATELLITE SECOND GENERATION (DVB-S2) STREAMS OVER THE PHYSICAL-LAYER FRAMING STRUCTURE - A method of inserting meta-data into a physical layer framing structure of a Digital Video Broadcast Satellite-Generation 2 (DVB-S2) comprising encoding meta-data and an original carrier signal using an encoder, the original carrier signal having a pilot sequence, replacing, by a meta-data insertion device, at least a portion of the pilot sequence with at least a portion of the meta-data to form a meta-pilot carrier signal, modulating, using a modulator, the meta-pilot carrier signal to form a modulated meta-pilot carrier signal, and transmitting, using a transmitting device, the modulated meta-pilot carrier signal. Additionally, the meta-data may be inserted by a meta-data insertion device into at least a portion of the XFECFRAME structure when dummy-PL Frames are available when VCM and ACM operation is used. | 07-21-2011 |
| 20110176604 | TERMINAL, IMAGE DISPLAY METHOD, AND PROGRAM - A terminal comprises a reception unit that receives image data compressed by using inter-frame prediction: and a first conversion unit that converts a first predictive frame in the image data received by said reception unit or a predictive frame immediately after switching made by a user switching request into a non-predictive frame and outputs said non-predictive frame. | 07-21-2011 |
| 20110182353 | SCALABLE VIDEO PROVIDING AND REPRODUCING SYSTEM AND METHODS THEREOF - Disclosed hereinafter is a scalable video providing system and method. The scalable video providing system of the present invention includes a terminal apparatus for, in the case in which a full SVC video, having a higher scalability than that of a base layer SVC video previously stored in the terminal apparatus, is to be displayed, transmitting a request query to request a enhancement layer svc bit stream, which is further required, to the outside based on the base layer SVC video; and a content providing server for, when the request query is received, searching for required pertinent content based on the request query and providing the enhancement layer svc bit stream, corresponding to the remaining scalable video other than the base layer SVC video of the searched content, to the terminal apparatus. | 07-28-2011 |
| 20110182354 | Low Complexity, High Frame Rate Video Encoder - Disclosed herein are techniques and computer readable media containing instructions arranged to utilize existing video compression techniques to enhance a visually appealing high frame rate, without incurring the bitrate and computational complexity common to high frame rate coding using conventional techniques. SVC skip slices—slices in which the slice_skip_flag in the slice header is set to a value of | 07-28-2011 |
| 20110182355 | APPARATUS AND METHOD FOR DETERMINING ADAPTIVE FILTER TAP TO ENCODE WAVELET TRANSFORM COEFFICIENT, WAVELET TRANSFORM APPARATUS AND METHOD USING THE SAME, AND RECORDING MEDIUM FOR THE SAME - The present disclosure relates to an apparatus and method for determining an adaptive filter tap to encode a wavelet transform coefficient, a wavelet transform apparatus and a method using the same, and a recording medium for the same, wherein the filter tap is determined rendering the high-band energy to be minimized, based not only on whether an edge is present but also on the edge location so as to adaptively determine the filter tap for an efficient coding of the wavelet transform coefficient. Therefore, the disclosure is able to prevent ringing artifacts and increase coding efficiency while maintaining clear definition on the edges. | 07-28-2011 |
| 20110188567 | SYSTEM AND METHOD FOR ADAPTIVE RATE SHIFTING OF VIDEO/AUDIO STREAMING - The present invention discloses a method for carrying out video and/or audio adaptive-rate streaming, comprising providing two or more encoders, wherein each encoder is tuned to and responsible for a specific range of bandwidth, and a media bridge forwarding data packets from an encoder to one or more clients, wherein the encoder is selected according to statistics representing one or more communication quality parameter. | 08-04-2011 |
| 20110188568 | SERVER APPARATUS, COMMUNICATION METHOD AND PROGRAM - Disclosed is a server apparatus including a conversion unit which, in case another terminal takes part anew in a group of terminals, during a time of transmitting the copied stream or packet, converts a video frame to a non-predictive frame and transmits the non-predictive frame and transmits a video signal following the non-predictive frame, as it is. | 08-04-2011 |
| 20110194599 | SCALABLE VIDEO ENCODING METHOD, SCALABLE VIDEO ENCODING APPARATUS, SCALABLE VIDEO ENCODING PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM STORING THE PROGRAM - In scalable video encoding, incidence rates of combinations of optimum prediction modes to be selected for spatially corresponding blocks of an upper layer and a lower layer are determined based on an optimum prediction mode that was selected in a conventional encoding, and then a correspondence table that describes relationships therebetween is created. Subsequently, the combinations of the selected optimum prediction modes described in the correspondence table are narrowed down based on the value of the incidence rate so as to create prediction mode correspondence information that describes the combinations of the optimum prediction mode narrowed down. When encoding the upper layer block, the prediction mode search candidate that is to be searched in the encoding is decided by referring to the prediction mode correspondence information using as a key the optimum prediction mode selected in the encoding of the spatially corresponding lower layer block and thereby reducing the number of the prediction mode search candidates. | 08-11-2011 |
| 20110200097 | ADAPTIVE TRANSFORM SIZE SELECTION FOR GEOMETRIC MOTION PARTITIONING - In one example, an apparatus includes a video encoder configured to partition a block of video data into a first geometric partition and a second geometric partition using a geometric motion partition line, wherein the block comprises N×N pixels, divide the block of video data into four equally-sized, non-overlapping (N/2)×(N/2) sub-blocks, and encode at least one of the sub-blocks through which the geometric motion partition line passes using a transform size smaller than (N/2)×(N/2). The video encoder may determine transform sizes for the sub-blocks based on whether the geometric motion partition line passes through the sub-blocks. In one example, a video decoder may inverse transform the sub-blocks, and may determine transform sizes for the sub-blocks based on whether the geometric motion partition line passes through the sub-blocks. | 08-18-2011 |
| 20110200098 | VIDEO ENCODING/DECODING APPARATUS AND ADAPTIVE OVERLAPPED BLOCK MOTION COMPENSATION METHOD AND APPARATUS EMPLOYING ADAPTIVE WEIGHTS THEREFOR - The present disclosure provides an adaptive overlapped block motion compensation apparatus employing adaptive weights including: an R | 08-18-2011 |
| 20110200099 | IMAGE ENCODING/DECODING METHOD AND DEVICE USING COEFFICIENTS OF ADAPTIVE INTERPOLATION FILTER - An image encoding/decoding method and apparatus using coefficients of an adaptive interpolation filter are disclosed including: a coefficient calculator for calculating adaptive interpolation filter coefficient of a current frame; an image encoder for interpolating reference frames using the adaptive interpolation filter coefficient of the current frame and encoding the current frame using the interpolated reference frames; a filter flag encoder for generating and encoding a coefficient-inserted flag or coefficient non-inserted flag as a filter flag according to the adaptive interpolation filter coefficient of the current frame; a coefficient encoder for encoding the adaptive interpolation filter coefficient of the current frame when the filter flag is a coefficient-inserted flag; and a bit stream generator for generating and outputting a bit stream, which includes the encoded current frame and encoded filter flag, and further includes encoded adaptive interpolation filter coefficient of the current frame when the filter flag is the coefficient-inserted flag. | 08-18-2011 |
| 20110200100 | MOTION PICTURE ENCODING/DECODING APPARATUS, ADAPTIVE DEBLOCKING FILTERING APPARATUS AND FILTERING METHOD FOR SAME, AND RECORDING MEDIUM - A video encoding/decoding apparatus, an adaptive deblocking filtering apparatus and a filtering method for same, and a recording medium are disclosed. The filtering apparatus includes: a boundary strength determiner for determining strength of boundaries between subblocks of current block; a direction selector for selecting multiple directions preset with reference to the boundary sequentially; a filtering pixel selector for selecting pixels for filtering based on selected directions; a filtering determiner for determining whether to perform the filtering for the selected directions depending on relationships between pixel values of selected pixels; and a filtering unit for filtering the selected pixels in the selected directions depending on the determination of whether to perform filtering to apply pixel-wide deblocking filtering in a plurality of directions as well as in vertical and horizontal directions, thus effectively removing block distortions resulting from a diagonal discontinuity caused byedges in a plurality of diagonal directions. | 08-18-2011 |
| 20110206113 | Data Compression for Video - A method of transmitting video data from a transmitter to a receiver, the method comprising: receiving data values of a video signal at a higher resolution; at the transmitter, combining groups of the data values into one or more first units of a first lower-resolution arrangement; encoding and transmitting the first lower-resolution arrangement to the receiver; at the transmitter, combining groups of the data values into one or more second units of a second lower-resolution arrangement, wherein the second units are offset from the first units by a fractional shift such that each second unit partially overlaps with at least one first unit; encoding and transmitting the second lower-resolution arrangement to the receiver; and transmitting an indication of said shift to the receiver; and at the receiver, combining the first and second lower-resolution arrangements based on the indication so as to reconstruct an image of at least a higher resolution than that of the first and second lower-resolution arrangements. | 08-25-2011 |
| 20110206114 | MOTION PICTURE ENCODING/DECODING APPARATUS, AND APPARATUS AND METHOD FOR ADAPTIVE OVERLAPPED BLOCK MOTION COMPENSATION BY VARIABLE UNIT FOR SAME - The present disclosure relates to a video encoding/decoding apparatus, and apparatus and method for adaptive overlapped block motion compensation by variable units for same. The apparatus and the method for adaptive overlapped block motion compensation by variable units, according to the present disclosure, when conducting a motion compensation, enable an encoder to perform an adaptive overlapped block motion compensation for a plurality of predetermined scan modes and sampling modes, and enable the encoder to calculate the computation volume occurring in said compensation and residual pixel energy, estimate the performance for each mode based on the calculation, determine an optimum scan mode and an optimum sampling mode, thus enabling a decoder to perform a motion compensation with optimum performance and less computing volume based on the determined mode. | 08-25-2011 |
| 20110211634 | Method and apparatus for offset metadata insertion in multi-view coded view - A method and apparatus are disclosed and described for providing Offset Metadata insertion in multi-view coded video. The apparatus includes an offset metadata inserter ( | 09-01-2011 |
| 20110211635 | MOVING PICTURE DECODING DEVICE, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING SYSTEM, INTEGRATED CIRCUIT, AND PROGRAM - To provide a moving picture decoding device capable of continuing motion compensation even when an error is included in a filter coefficient for motion compensation. The moving picture decoding device includes: a decoding unit ( | 09-01-2011 |
| 20110216819 | Local flextream over internet protocol - The invention relates to the field of digital television. More exactly, the invention deals with video compression equipments inside television head-ends, which comprise encoders grouped in encoding pools for statistical multiplexing. The invention also concerns of a method for driving individual output bitrates for encoders gathered in such encoding pool. | 09-08-2011 |
| 20110216820 | Method and apparatus for rate control for multi-view video coding - A method and apparatus are disclosed and described for providing rate control for multi-view video coding. The apparatus includes an encoder ( | 09-08-2011 |
| 20110216821 | METHOD AND APPARATUS FOR ADAPTIVE STREAMING USING SCALABLE VIDEO CODING SCHEME - A method which provides a video streaming service, and the method includes: generating layer data for a corresponding video in accordance with a layer coding scheme using residual data; receiving bit rate information including a bit rate decodable in a terminal from the terminal; selecting a layer necessary for a decoding of a video corresponding to the decodable bit rate from among the generated layer data; and transmitting layer information and layer data corresponding to the selected layer to the terminal. | 09-08-2011 |
| 20110216822 | VIDEO-INFORMATION ENCODING METHOD AND VIDEO-INFORMATION DECODING METHOD - A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted. | 09-08-2011 |
| 20110216823 | VIDEO-INFORMATION ENCODING METHOD AND VIDEO-INFORMATION DECODING METHOD - A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted. | 09-08-2011 |
| 20110216824 | VIDEO-INFORMATION ENCODING METHOD AND VIDEO-INFORMATION DECODING METHOD - A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted. | 09-08-2011 |
| 20110216825 | VIDEO-INFORMATION ENCODING METHOD AND VIDEO-INFORMATION DECODING METHOD - A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted. | 09-08-2011 |
| 20110222599 | VIDEO-INFORMATION ENCODING METHOD AND VIDEO-INFORMATION DECODING METHOD - A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted. | 09-15-2011 |
| 20110235699 | PARALLEL ENTROPY CODING - Parallel coding of digital pictures is described. A digital picture is divided into two or more vertical sections. Two or more corresponding Stage | 09-29-2011 |
| 20110235700 | APPARATUS AND METHOD FOR GENERALIZED FGS TRUNCATION OF SVC VIDEO WITH USER PREFERENCE - An apparatus for truncating fine granular scalability (FGS) data of a scalable video coding (SVC) video, the apparatus including: a rate-distortion (R-D) data extractor analyzing a bitstream to extract R-D data of at least one spatial layer; a user preference collector collecting user preference information associated with each spatial layer; a decision engine unit deciding an optimal bitrate of each spatial layer based on the R-D data and the collected user preference information; and a scaling engine unit truncating FGS data that does not correspond to the optimal bitrate of each spatial layer is provided. | 09-29-2011 |
| 20110235701 | SCALABLE VIDEO BROADCASTING APPARATUS AND METHOD OVER MULTIBAND SATELLITE CHANNEL - Provided is an apparatus and method for transmitting/receiving multiband broadcasting using scalable video coding, which can solve a limitation of a transmission band in a multichannel satellite broadcasting service and increase availability of a satellite broadcasting service by scalably encoding video data and transmitting the data using a different transmission band for each layer. The apparatus for transmitting multiband broadcasting using scalable video coding includes: a scalable video encoder for scalably encoding video data to generate a scalable video stream having multiple layers; a multiplexer for multiplexing the scalable video elementary stream having multiple layers, a compressed audio elementary stream, and program specification information to generate a transport stream (TS); and a multiband transmitter for separating packets of the TS into multiple TSs according to pre-given priority information and transmitting the packet streams using a different transmission band. | 09-29-2011 |
| 20110235702 | VIDEO PROCESSING AND TELEPRESENCE SYSTEM AND METHOD - A codec comprising a video input ( | 09-29-2011 |
| 20110235703 | Stream Synchronization for Live Video Encoding - Methods of encoding a live video signal in a video encoding system including a plurality of video capture and encoding subsystems include providing the live video signal and an associated time code signal to the plurality of video capture and encoding subsystems, starting video capture and encoding in a first one of the subsystems at a first frame of the live video signal, starting video capture and encoding in a second one of the subsystems at a second frame of the live video signal that is later than the first frame, generating encode frame timestamps for the second frame in both the first and second video capture and encoding subsystems that are synchronized across the first and second subsystems, and associating the encode frame timestamp with the second frame in both the first and second subsystems. Related systems are also disclosed. | 09-29-2011 |
| 20110235704 | MOTION PICTURE ENCODING/DECODING APPARATUS, AND METHOD AND APPARATUS FOR HYBRID BLOCK MOTION COMPENSATION/OVERLAPPED BLOCK MOTION COMPENSATION FOR SAME - A hybrid block motion compensation/adaptive overlapped block motion compensation apparatus for an encoding apparatus includes: a selector for selecting between a block motion compensation BMC and an overlapped block motion compensation OBMC with respect to a current block in units of pixels according to a set criterion; an adaptive motion compensator; a scan mode setter for scanning the current block in a plurality of set scan modes and establishing a scan mode causing a smallest number of transitions between the BMC and OBMC; and an information recorder for recording transition information at locations of the pixels corresponding to the transitions between the BMC and OBMC. A decoding apparatus is disclosed including: an interpreter for scan mode information of a current block and information about transitions between the BMC and OBMC for each of pixels of the current block; and an adaptive motion compensator for operating in units of the pixels. | 09-29-2011 |
| 20110235705 | BTSC ENCODER - The disclosed BTSC encoder includes a left high pass filter means for receiving a digital left channel audio signal and for digitally high pass filtering the digital left channel audio signal and thereby generating a digital left filtered signal; a right high pass filter means for receiving a digital right channel audio signal and for digitally high pass filtering the digital right channel audio signal and thereby generating a digital right filtered signal; a matrix means for receiving the digital left and digital right filtered signals, and including means for summing the digital left and digital right filtered signals and thereby generating a digital sum signal, and including means for subtracting one of the digital left and digital right filtered signals from the other of the digital left and digital right filtered signals and thereby generating a digital difference signal; a difference channel processing means for digitally processing the digital difference signal; and a sum channel processing means for digitally processing the digital sum signal. | 09-29-2011 |
| 20110243218 | METHOD OF IMPLEMENTING IMPROVED RATE CONTROL FOR A MULTIMEDIA COMPRESSION AND ENCODING SYSTEM - The rate controller in a digital video encoding system is responsible for allocating a bit budget for video frames to be encoded. The rate controller considers many different factors when determining the frame bit budget. One of the factors considered is the complexity of the frames being compressed. Occasionally there will be a very complex frame that is not representative of the overall video frame sequence. Such a rare complex frame may cause a disproportionate affect on the bit budget allocation. The system of the present invention limits the amount that a very complex frame can change the bit budget allocation. The rate controller of the present invention also includes a relaxation factor. The relaxation factor allows a user to determine if the rate controller should strictly allocate its bit budget or relax its standards such that the rate controller may not be so conservative when allocating bits to frames. | 10-06-2011 |
| 20110243219 | METHOD AND APPARATUS FOR ENCODING VIDEO BASED ON INTERNAL BIT DEPTH INCREMENT, AND METHOD AND APPARATUS FOR DECODING VIDEO BASED ON INTERNAL BIT DEPTH INCREMENT - A method of encoding a video based on a bit depth increment, the method including: determining a scaling method so that a dynamic range, which is based on a bit depth of a restored image decreased by de-scaling that is performed to decrease the bit depth increment, is identical to a dynamic range based on a bit depth of an input image, and generating an internal image having the bit depth increment by applying the scaling method to pixel values of the input image; and determining and encoding coding units having a tree structure, for each maximum coding unit of the internal image having the bit depth increment. | 10-06-2011 |
| 20110243220 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE AND METHOD AND APPARATUS FOR DECODING IMAGE USING ADAPTIVE COEFFICIENT SCAN ORDER - Provided are a method and apparatus for encoding an image and a method and apparatus for decoding an image using an adaptive coefficient scan order. The method for encoding the image includes: projecting coefficients of a current block to a reference axis, from among a horizontal axis and a vertical axis, along a first straight line perpendicular to a second straight line with a predetermined angle α from the reference axis; scanning the coefficients of the current block in an arrangement order of the projected coefficients projected to the reference axis; and entropy-encoding information about the predetermined angle α and the scanned coefficients. | 10-06-2011 |
| 20110249721 | VARIABLE LENGTH CODING OF CODED BLOCK PATTERN (CBP) IN VIDEO COMPRESSION - This disclosure describes techniques for coding video data. As one example, this disclosure describes a coded block pattern (CBP) for a coding unit (CU) of video data that indicates whether or not each of a luminance component (Y), a first chrominance component (U), and a second chrominance component (V) include at least one non-zero coefficient. According to another example, this disclosure describes a CBP that indicates whether respective blocks of a CU include at least on non-zero coefficient. The CBP described herein may be mapped to a single variable length code (VLC) code word. The VLC code word may be used by a coder to code the CU of video data. | 10-13-2011 |
| 20110255591 | METHOD AND APPARATUS FOR PROCESSING VIDEO DATA - A method for signalling an intra chroma prediction mode and a method for implementing the signalled intra chroma prediction mode, the intra chroma prediction mode taking an intropolation of previously predicted luma samples from neighboring blocks of video data to attain an intra chroma prediction of a current chroma prediction unit. | 10-20-2011 |
| 20110255592 | VIRTUAL VIEW IMAGE SYNTHESIS METHOD AND APPARATUS - The virtual view image synthesis method according to the present invention comprises: generating an intermediate picture from a first viewpoint and an intermediate picture from a second viewpoint by swapping a reference picture from a first viewpoint and a reference picture from a second viewpoint; determining whether there is a hole in said intermediate picture from a first viewpoint; if there is a hole in said intermediate picture from a first viewpoint, obtaining the pixel value of said intermediate picture from a second viewpoint based on the location of said hole; and allocating the pixel value of said intermediate picture from a second viewpoint to said hole. A virtual picture is synthesized using a reference picture, thereby reducing the quantity of information due to encoding a virtual viewpoint picture. | 10-20-2011 |
| 20110261878 | BIT RATE CONTROL METHOD AND APPARATUS FOR IMAGE COMPRESSION - Method and apparatus of bit rate control for image compression are provided. The method includes the following steps. With respect to a color channel, image complexity of spatial domain image data of an image is obtained according to the spatial domain image data. A scale factor with respect to the color channel is estimated according to the image complexity and a target bit rate. During image compression of the image, frequency domain image data of the image is quantized according to the estimated scale factor. | 10-27-2011 |
| 20110268178 | ENCODING VIDEO STREAMS FOR ADAPTIVE VIDEO STREAMING - One embodiment of the invention sets forth an encoding server including components configured to encode a video stream associated with a content title for adaptive streaming. The video stream is first processed by a VC1 encoder to generate an encoded video stream comprising a multiple GOPs, each GOP including a key frame and having a different playback offset. The encoded video stream is then packaged such that the GOPs are stored in data packets of the packaged encoded stream. An SHI generator generates an SHI associated with the packaged encoded stream that includes a switch point associated with each GOP. Each switch point includes the playback offset associated with the corresponding GOP and the data packet storing the key frame of the corresponding GOP. The SHI associated with multiple packaged encoded video streams associated with the same content title and encoded to different playback bit rates have corresponding switch points. | 11-03-2011 |
| 20110268179 | MOTION ESTIMATION WITH VARIABLE SPATIAL RESOLUTION - A motion estimator has a spatial sub-sampler to receive input images; at least one motion estimator determining motion vectors between input images and sub-sampled motion vectors between sub-sampled images; an up-sampler for up-sampling the sub-sampled motion vectors; and a selector for providing a motion vector output by selecting between the motion vectors and the (up-sampled) sub-sampled motion vectors, according to motion vector confidence. | 11-03-2011 |
| 20110274156 | SYSTEM AND METHOD FOR TRANSMITTING MULTIMEDIA STREAM - Systems and methods for transmitting a multimedia stream are disclosed. A transmitter encodes audio data, video data, and control information received from a source and transmits over a network the different types of data to a receiver coupled to a display. The systems and methods utilize different network queues for the different types of traffic in order to account for differences in quality of service (QoS) parameters. The systems and methods adaptively adjust encoding and transmission parameters based on monitoring changing conditions of the network. | 11-10-2011 |
| 20110274157 | METHOD AND SYSTEM FOR 3D VIDEO PRE-PROCESSING AND POST-PROCESSING - A 3-dimensional (3D) video transmitter may be operable to determine a modification process to be utilized for modifying an enhancement layer of a 3D video frame before encoding of the enhancement layer. The modification process may provide increased compression efficiency during the encoding. The enhancement layer may be modified utilizing the determined modification process. The modified enhancement layer may then be encoded by the 3D video transmitter. The 3D video transmitter may transmit the encoded base layer and the encoded enhancement layer as well as modification information associated with the modified enhancement layer to a 3D video receiver. The 3D video receiver may decode the transmitted encoded base layer and the transmitted encoded enhancement layer. The 3D video receiver may then modify the decoded enhancement layer, based on the transmitted modification information, so as to recover an original image of the enhancement layer of the 3D video frame. | 11-10-2011 |
| 20110274158 | Method and Apparatus of Adaptive Loop Filtering - In a block-based motion compensated system, coding noises may arise due to lossy operations such as quantization. Deblocking is often used to alleviate visibility of coding artifacts by applying filtering across block boundaries adaptively. In the recent HEVC development, adaptive loop filtering (ALF) is being adopted to process deblocked reconstruction frames. Adaptive loop filtering is applied to reconstructed video data across multiple frames to reduce visibility of coding artifacts in the temporal domain. In a HEVC system, conventional ALF can be selectively turned ON or OFF for each block in a frame or a slice. The advanced ALF disclosed here allows a choice of multiple filter sets that can be applied to the reconstructed video data adaptively. Furthermore, the advanced ALF adopts a new unit for the filtering process to apply so that more flexible and/or localized processing can be provided. Furthermore, the advanced ALF allows a decoder to derive respective information for applying the filtering process without side information. | 11-10-2011 |
| 20110274159 | ENCODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, EDITION DEVICE AND METHOD, RECORDING MEDIUM, AND PROGRAM - The present invention relates to an encoding device and a method, a decoding device and a method, an editing device and a method, a storage medium, and a program which can perform encoding and decoding so that buffer failure does not occur. Information, such as a minimum bit rate, a minimum buffer size, and a minimum initial delay time, is contained in a random access point header contained in an accessible point in a bitstream. A bitstream analyzing unit | 11-10-2011 |
| 20110280301 | DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA - A digital broadcasting system and method of processing data are disclosed. The digital broadcasting system includes a transmitting system and a receiving system. The transmitting system comprises a distributed transmission adapter and a plurality of transmitters each being operated as a slave of the distributed transmission adapter, and each sharing the same frequency and transmitting the same signals. | 11-17-2011 |
| 20110286513 | METHODS AND APPARATUS FOR ADAPTIVE MODE VIDEO ENCODING AND DECODING - There are provided methods and apparatus for adaptive mode video encoding and decoding. An apparatus includes an encoder for encoding adapted mode mapping information for a mapping between values of a mode index and modes available to encode at least a portion of a picture in a sequence of pictures. The adapted mode mapping information is adapted based on one or more actual parameters of the sequence. | 11-24-2011 |
| 20110292994 | ENHANCED INTRA PREDICTION MODE SIGNALING - A method and apparatus for signaling and receiving a video signal for processing is disclosed. Methods for determining a most probable mode for predicting a current prediction block are provided as well as new methods for grouping intra prediction modes into prediction groups. Methods for predicting a prediction block of video data as well as signaling intra prediction modes are also provided. | 12-01-2011 |
| 20110292995 | MOVING IMAGE ENCODING APPARATUS, MOVING IMAGE ENCODING METHOD, AND MOVING IMAGE ENCODING COMPUTER PROGRAM - A moving image encoding apparatus, which divides moving image data into a plurality of sub-data, encodes the sub-data in parallel by using a plurality of encoders, and thereafter splices the resulting encoded sub-bitstream data into a single bitstream, includes a convergence target deriving function for determining a target value for a first amount of buffer occupancy so that the first amount of buffer occupancy at a point in time at which data corresponding to a last picture contained in first sub-bitstream data is removed from a first hypothetical buffer does not drop below a second amount of buffer occupancy which represents the amount of space that second sub-bitstream data occupies in a second hypothetical buffer at that point in time. | 12-01-2011 |
| 20110299588 | RATE CONTROL IN VIDEO COMMUNICATION VIA VIRTUAL TRANSMISSION BUFFER - Embodiments of the present invention provide a video encoding system that may include a coding engine to code an input video signal according to a video compression process, compression of each portion of the input signal performed according to coding parameters assigned to the respective portion. The video encoding system may also include a rate controller to select coding parameters of each portion of the input signal, the rate controller estimating delay of delivery of coded video data by a delivery network according to a leaky bucket modeling process and selecting coding parameters of a portion to be coded based at least in part on the estimated delay. | 12-08-2011 |
| 20110299589 | RATE CONTROL IN VIDEO COMMUNICATION VIA VIRTUAL TRANSMISSION BUFFER - Embodiments of the present invention provide a video encoding system that may include a coding engine to code an input video signal according to a video compression process, compression of each portion of the input signal performed according to coding parameters assigned to the respective portion. The video encoding system may also include a rate controller to select coding parameters of each portion of the input signal, the rate controller estimating delay of delivery of coded video data by a delivery network according to a leaky bucket modeling process and selecting coding parameters of a portion to be coded based at least in part on the estimated delay. | 12-08-2011 |
| 20110299590 | ERROR RESILIENT CODING METHOD USING ADAPTIVE ADDITIONAL IMAGE INFORMATION - An error resilient coding method using adaptive additional image information is provided comprising determining a priority order of header data, adaptively configuring additional image information according to the priority order, and coding the additional image information and adding the coded additional image information to original image information. | 12-08-2011 |
| 20110299591 | VIDEO PROCESSING APPARATUS AND METHOD - A video processing apparatus is provided. The video processing apparatus includes a decoder, a controller and a display device. The decoder decodes a bitstream, wherein the bitstream comprises a plurality of frames and each frame in the plurality of frames is sub-divided into a plurality of regions. The controller is coupled to the decoder, for determining whether each region of a current frame in the plurality of frames is an intra-coded region or an inter-coded region with reference to the regions in at least one reference frame in the plurality of frames. The display device is coupled to the controller, for displaying the current frame of the plurality of frames when all regions in the current frame are the intra-coded regions or the inter-coded regions with reference to the regions in the available reference frame. | 12-08-2011 |
| 20110305273 | PARALLEL MULTIPLE BITRATE VIDEO ENCODING - A multiple bitrate (MBR) video encoding management tool utilizes available processing units for parallel MBR video encoding. For example, instead of focusing only on multi-threading of encoding tasks for a single picture or group of pictures (GOP), the management tool parallelizes the encoding of multiple GOPs between different processing units and/or different computing systems. With this parallel MBR video encoding architecture, different GOPs can be encoded in parallel. To facilitate such parallel encoding, data dependencies between GOPs are removed. The management tool can adjust the number of GOPs to encode in parallel on a computing system so as to favor parallelism of encoding for different GOPs at the expense of parallelism of encoding inside a GOP, or vice versa, and thereby set a suitable balance between encoding latency and throughput. | 12-15-2011 |
| 20110305274 | APPARATUS AND METHOD OF ADAPTIVE OFFSET FOR VIDEO CODING - An apparatus and method for content adaptive offset restoration are described. In video processing system, due to various mathematic operations applied to the data, the mean intensity of the processed video data may be shifted from mean intensity of original data. The intensity offset will result in noticeable artifacts. Accordingly adaptive offset restoration is disclosed which derives intensity offset for a region of a picture based on the dynamic characteristics of underlying pixels. According to the characteristics measurement of underlying pixels, the pixels in each region are classified into classes and an intensity offset is determined for each class. The characteristics measurement may be based on pixel patterns at an underlying pixel and the characteristics may be related to edge, peak and valley at the underlying pixel. Alternatively, the characteristics measurement may be based on pixel intensity of an underlying pixel and the pixel intensity is partitioned into multiple bands for classification. | 12-15-2011 |
| 20110305275 | SYSTEM AND METHOD FOR PROVIDING ERROR RESILENCE, RANDOM ACCESS AND RATE CONTROL IN SCALABLE VIDEO COMMUNICATIONS - Systems and methods for error resilient transmission, rate control, and random access in video communication systems that use scalable video coding are provided. Error resilience is obtained by using information from low resolution layers to conceal or compensate loss of high resolution layer information. The same mechanism is used for rate control by selectively eliminating high resolution layer information from transmitted signals, which elimination can be compensated at the receiver using information from low resolution layers. Further, random access or switching between low and high resolutions is also achieved by using information from low resolution layers to compensate for high resolution spatial layer packets that may have not been received prior to the switching time. | 12-15-2011 |
| 20110310955 | METHOD AND SYSTEM FOR REPETITION BASED ADAPTIVE VIDEO COMPRESSION - A video transmitter may perform adaptive video compression, by comparing uncompressed picture data for a picture among a sequence of pictures with uncompressed picture data for one or more preceding pictures among the sequence of pictures, to detect presence of repeated data. The video transmitter may allocate based on presence of repeated data, a target bit count corresponding to the picture, wherein the target bit count may be used in generating compressed data corresponding to the picture within a compressed bitstream that is used for communication of said sequence of pictures. The allocation of the target bit count comprises determining at least a portion of the target bit count based on combining of encoding of repeated data between the picture and at least one proceeding also comprising the repeated data. The video transmitter may determine a number of repeated pictures for comparison, based on allowable transmission latency for example. | 12-22-2011 |
| 20110310956 | METHODS FOR CONTROLLING VIDEO DECODER TO SELECTIVELY SKIP ONE OR MORE VIDEO FRAMES AND RELATED SIGNAL PROCESSING APPARATUSES THEREOF - An exemplary method for processing an input bitstream having a plurality of video frames includes the following steps: deriving an indication data from decoding of a current video frame, and controlling a video decoder to decode or skip a next video frame by referring to at least the indication data and a video decoder capability of the video decoder. A signal processing apparatus for processing an input bitstream including a plurality of video frames includes a video decoder, an indication data estimating unit, and a controller. The video decoder is arranged to decode a current video frame. The indication data estimating unit is for deriving an indication data from decoding of the current video frame. The controller is for controlling the video decoder to decode or skip a next video frame by referring to at least the indication data and a video decoder capability of the video decoder. | 12-22-2011 |
| 20110310958 | SYSTEM FOR ENTROPY DECODING OF H.264 VIDEO FOR REAL TIME HDTV APPLICATIONS - An embodiment relates to a decoder for decoding CABAC encoded video data in real time for HDTV applications. The decoder comprises a binary arithmetic decoder block for converting an input bit stream into a bin string, a context memory for storing a plurality of context values, and a plurality of finite state machines. Each of the finite state machines is adapted for decoding a particular one of the H.264 syntax elements by providing the binary arithmetic decoder block with an index of the relevant context value within the context memory and by converting the resulting bin stream into a value of the current syntax element. In this manner, a performance of one bin per cycle may be achieved. | 12-22-2011 |
| 20110310959 | METHOD AND APPARATUS FOR PREDECODING AND DECODING BITSTREAM INCLUDING BASE LAYER - A method and apparatus for extracting a higher quality video stream for a given bit-rate by replacing a specific frame by a base layer frame at a predecoder are provided. A predecoding method performed by the predecoder includes selecting a mode by determining frames to be skipped according to a predetermined criterion among frames located at positions where the base layer exists, and extracting a portion of the bitstream according to the selected mode and extraction conditions. | 12-22-2011 |
| 20110310960 | ENCODING AND DECODING MULTI-VIEW VIDEO WHILE ACCOMMODATING ABSENT OR UNRELIABLE CAMERA PARAMETERS - A method of encoding multi-view video using camera parameters and a method of decoding multi-view video using the camera parameters are provided. The method of encoding multi-view video using the camera parameters includes detecting the camera parameters from each of a plurality of video data input from a multi-view camera in predetermined video units, and adaptively encoding each of the plurality of the video data according to whether each video data has the camera parameters. Accordingly, it is possible to increase the efficiency of compressing video without degrading video quality. | 12-22-2011 |
| 20110317756 | Coding device, imaging device, coding transmission system, and coding method - A coding device includes: an obtaining section configured to obtain moving image data including a plurality of pieces of image data reproducible at a predetermined rate; a determining section configured to determine whether coding of each piece of the image data of the moving image data obtained by the obtaining section is necessary, and output an indicating signal indicating image data set as a coding object or image data not set as a coding object; and a coding performing section configured to be supplied with the indicating signal, and code the plurality of pieces of image data obtained by the obtaining section while discretely reducing the image data according to determination of the determining section. | 12-29-2011 |
| 20110317757 | INTRA PREDICTION MODE SIGNALING FOR FINER SPATIAL PREDICTION DIRECTIONS - A video encoder selects a prediction mode for a current video block from a plurality of prediction modes that includes both main modes and finer directional intra spatial prediction modes, also referred to as non-main modes. The video encoder may be configured to encode the selection of the prediction mode of the current video block based on prediction modes of one or more previously encoded video blocks of the series of video blocks. The selection of a non-main mode can be coded as a combination of a main mode and a refinement to that main mode. A video decoder may also be configured to perform the reciprocal decoding function of the encoding performed by the video encoder. Thus, the video decoder uses similar techniques to decode the prediction mode for use in generating a prediction block for the video block. | 12-29-2011 |
| 20120002718 | METHOD AND APPARATUS FOR SELECTING VIDEO CODEC TO BE USED BETWEEN STATIONS - Provided is a video codec selection method which includes transmitting, by a station management entity (SME) of a first station, a codec selection request primitive which requests approval of a use of at least one codec to be used for compression of at least one video stream to a protocol adaptation layer (PAL) of the first station, transmitting, by the PAL of the first station, a codec selection request frame which requests approval of the use of the at least one codec to a second station, and receiving, by the PAL of the first station, a codec selection response frame which indicates whether the use of the at least one codec is approved from the second station. | 01-05-2012 |
| 20120008675 | CODING SYNTAX ELEMENTS FOR ADAPTIVE SCANS OF TRANSFORM COEFFICIENTS FOR VIDEO CODING - In one example, an apparatus for encoding video data includes a video encoder configured to scan a two-dimensional block of transform coefficients to produce a one-dimensional vector of the transform coefficients, determine values indicative of whether the transform coefficients in the one-dimensional vector are significant; and entropy encode at least one of the values using a context model selected based on at least a percentage of significant coefficients in a predetermined number of the values encoded before the at least one of the values. | 01-12-2012 |
| 20120008676 | METHOD AND APPARATUS FOR ENCODING VIDEO BY USING BLOCK MERGING, AND METHOD AND APPARATUS FOR DECODING VIDEO BY USING BLOCK MERGING - Provided are a method and apparatus for encoding a video by using block merging and a method and apparatus for decoding a video by using block merging. The method of encoding includes: determining an encoding mode indicating a current data unit for encoding of a picture and an encoding method including prediction encoding performed for the current data unit; determining an occurrence of merging with at least one neighboring data unit based on at least one of the encoding mode and a prediction mode; and determining prediction mode information, merging related information, and prediction related information, and determining encoding information of the data unit including the prediction mode information, the merging related information, and the prediction related information. | 01-12-2012 |
| 20120008677 | H.264/AVC BASED APPROACH TO SCALABLE VIDEO COMPRESSION - A scalable video compression method and apparatus for encoding an input frame sequence having temporally sequential frames includes partitioning each of the frames of the input frame sequence into a top field and a bottom field to form a base layer sequence of fields and an enhancement layer sequence of fields. The base layer sequence and the enhancement layer sequence each comprise temporally alternating top and bottom fields of the partitioned frames of the input frame sequence. The base layer sequence and the enhancement layer sequence are encoded, wherein at least one field of the enhancement layer sequence is encoded in dependence upon at least one of the fields of the base layer sequence. | 01-12-2012 |
| 20120014431 | Methods and Systems for Parallel Video Encoding and Parallel Video Decoding - Aspects of the present invention are related to systems and methods for parallel video encoding and parallel video decoding. | 01-19-2012 |
| 20120014432 | APPARATUS, METHOD AND PROGRAM FOR IMAGE CONVERSION - Disclosed is a conversion apparatus including a decoding unit that decodes input encoded data into image data, and a size conversion unit that converts size of the image data based on a size conversion request received from outside and that expands/contracts, or splits/synthesizes motion vector or prediction mode of encoding parameters, received from the decoding unit, based upon a size conversion request, and an encoding unit that encodes image data after size conversion using the prediction mode or motion vector converted and transmits the resulting encoded image data via a transmission buffer to outside. | 01-19-2012 |
| 20120014433 | ENTROPY CODING OF BINS ACROSS BIN GROUPS USING VARIABLE LENGTH CODEWORDS - This disclosure describes techniques for entropy coding bins representing video data symbols with reduced bottlenecks in the entropy coding process. The techniques of this disclosure enable an entropy coding device to perform entropy coding of bins grouped into bin subsets from across different bin groups, e.g., context groups or probability groups, using variable length codewords. In one example, the bins may be assigned to context groups with no context dependencies between the context groups. In another example, the bins may be assigned to probability groups associated with different intervals of probability states. The bins may be grouped into the bin subsets according to determined formations of the bin subsets. In this way, the entropy coding device may reduce an amount of bin and codeword buffering by efficiently forming the bin subsets and designing variable length codewords for each of the bin subsets. | 01-19-2012 |
| 20120014434 | SYSTEM AND METHOD FOR THINNING OF SCALABLE VIDEO CODING BIT-STREAMS - A system for videoconferencing that offers, among other features, extremely low end-to-end delay as well as very high scalability. The system accommodates heterogeneous receivers and networks, as well as the best-effort nature of networks such as those based on the Internet Protocol. The system relies on scalable video coding to provide a coded representation of a source video signal at multiple temporal, quality, and spatial resolutions. These resolutions are represented by distinct bitstream components that are created at each end-user encoder. System architecture and processes called SVC Thinning allow the separation of data into data used for prediction in other pictures and data not used for prediction in other pictures. SVC Thinning processes, which can be performed at video conferencing endpoints or at MCUs, can selectively remove or replace with fewer bits the data not used for prediction in other pictures from transmitted bit streams. This separation and selective removal or replacement of data for transmission allows a trade-off between scalability support (i.e. number of decodable video resolutions), error resiliency and coding efficiency. | 01-19-2012 |
| 20120027076 | METHOD FOR IMAGE VISUAL EFFECT IMPROVEMENT OF VIDEO ENCODING AND DECODING - The present invention relates to method for image visual effect improvement of video encoding and decoding. The method at an encoder comprises enhancement process of image boundary information, adaptive brightness transformation process, and adaptive enhancement process of chrominance information. The method at a decoder comprises adaptive enhancement of boundary information based on the block statistical characteristic, adaptive brightness transformation process, and adaptive enhancement process of the chrominance information. Based on characteristics of the image source at the encoder and the decoder, the present invention uses brightness space processing technology to eliminate blocking artifacts, enhance high frequency information and improve brightness information distribution, so as to improve brightness information of the image in one aspect, and uses the chroma space processing technology to enhance color effect of the image in the other aspect, and finally, the objective of improving visual effect of the image is achieved. | 02-02-2012 |
| 20120027078 | INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD - According to one embodiment, an information processing apparatus includes a converter, a detector and a first filter processing module. The converter is configured to produce a plurality of decoded pictures at least by decoding and converting a motion picture stream, the motion picture stream generated by encoding a plurality of pixels on a block-by-block basis into pictures. The detector is configured to detect a reference picture from the plurality of decoded pictures, the reference picture comprising a picture that is referred to by another picture of the plurality of decoded pictures at decoding. The first filter processing module is configured to perform image quality improvement processing on the reference picture detected by the detector and not to perform the image quality improvement processing on pictures from the plurality of decoded pictures which are not reference pictures. | 02-02-2012 |
| 20120027079 | Adaptive Interpolation Filters for Multi-Layered Video Delivery - Adaptive interpolation filters for multi-layered video delivery are described. Combinations of such adaptive filters with other pre-processing steps in the context of frame or 2D compatible 3D and 2D scalable video delivery system are also addressed. | 02-02-2012 |
| 20120033727 | EFFICIENT VIDEO CODEC IMPLEMENTATION - A device and a method are provided. The device may include: a first encoder arranged to apply a first type encoding process on an input frame element to provide a first type encoded frame element; the input frame elements belong to an input frame; a second encoder arranged to apply a second type encoding process on the input frame element to provide a second type encoded frame element; wherein the first type encoding process differs from the second type encoding process by a degree of expected loss of data; a control circuit arranged to select a selected frame element out of the first and second type encoded frame elements; a memory unit arranged to store information about the selected frame element; and an output interface arranged to output the selected frame element. | 02-09-2012 |
| 20120039383 | CODING UNIT SYNCHRONOUS ADAPTIVE LOOP FILTER FLAGS - An apparatus and method for coding unit-synchronous adaptive loop filtering (ALF) for an image area that is partitioned into a plurality of coding units are disclosed. In a conventional approach, the slice-level bitstream cannot be generated until all coding units in a slice are processed since the ALF filter coefficients are determined based on reconstructed pixels and original pixels of a slice. According to one embodiment, the method processes the coding units in the image area one after the other to generate a CU-level bitstream. The method also reconstructs the coding units to from reconstructed coding units which are subject to adaptive loop filtering. Upon the availability of reconstructed coding units for the image area, the method derives filter coefficients for the ALF filter based on the reconstructed pixels and original pixels in the image area. The designed ALF filter is then tested for each coding unit to determine whether the ALF filter should be applied to the coding unit and the decision is indicated by an ALF flag. After all ALF flags are determined, an image area header is created by incorporating the filter coefficients and ALF flags in the header. The header and the CU-level data previously created are combined into an image area level bitstream. An apparatus to perform the steps recited in the method is also disclosed. | 02-16-2012 |
| 20120044986 | LOW COMPLEXITY ADAPTIVE FILTER - For a first series of video blocks, an encoder determines two filters, a first decoding filter that is to be transmitted to a decoder and a first interim filter that is not to be transmitted to the decoder. The first interim filter is used to determine which coded units of a second series of video blocks are to be filtered. After a decision is made as to which coded units of the second series of video blocks are to be filtered, the encoder determines a second decoding filter for the second series of video blocks and transmits the second decoding filter to the decoder. In addition to determining the second decoding filter, the encoder also determines a second interim filter, which the encoder uses to determine which coded units of a third series of video blocks are to be filtered. This process may repeat for many series of video blocks. | 02-23-2012 |
| 20120044987 | Entropy coder supporting selective employment of syntax and context adaptation - Entropy coder supporting selective employment of syntax and context adaptation. In video coding, different entropy coding is selectively and adaptively employed based on local and/or remote consideration(s). For example, certain entropy coding may be context adaptive while other entropy coding may be non-context adaptive, and may operate in accordance with syntax or without syntax. Selective adaptation between context adaptive entropy coding and non-context adaptive entropy coding, as well as those which operate using syntax or without syntax may be made based on one or more local and/or remote characteristic(s). Transitioning between the various end to end configurations midstream can occur upon reference frame transitions with appropriate header information leadoff in a given bitstream. A given device (e.g., encoder or transcoder) may be implemented to transition independently, in cooperation with, or under the direction/coordination with one or more other devices within the communication system. | 02-23-2012 |
| 20120063509 | Reformatting Data to Decrease Bandwidth Between a Video Encoder and a Buffer - A reference picture buffer may supply an asymmetric macroblock to a video encoder to improve the bandwidth between the encoder and buffer. The macroblock width may be sized to match the minimum burst width of the buffer. The size of the macroblock may be kept unchanged by reducing the macroblock height. | 03-15-2012 |
| 20120063510 | VIDEO BIT-RATE CONTROL - This document relates to video transport systems and in particular, though not exclusively, where several compressed or encoded video services are multiplexed into a fixed bit rate transmission stream. There is provided a method of allocating bit-rates for video services in a transport channel. The method comprises receiving user defined weighting parameters for a number of video services ( | 03-15-2012 |
| 20120069894 | Method Of Transmitting Video Data - A sink device wirelessly transmits a device capability response message to a source device. The device capability response message includes a video information message including at least one video format identification code (VIC) for identifying a video format of video data, which the sink device can display, and a coded video information message including compressing parameters for compressing video data. The VIC includes a VIC for 4k2k video data having 3840 or 4096 effective horizontal pixels and 2160 effective vertical pixels. | 03-22-2012 |
| 20120076199 | Adaptive data transmission rate control for a wireless display device - A method, a computer readable medium and an apparatus to adaptively control a data transmission rate of a wireless display device. The method includes determining a current data transmission rate capacity of a wireless channel; and controlling a data transmission rate of a wireless transmission device based on the current data transmission rate capacity. | 03-29-2012 |
| 20120076201 | LINK AWARE MOBILE DATA NETWORK - Methods, systems, and devices are described for communicating data from multiple data terminals to an aggregator terminal over a communication link having changing link conditions. In some embodiments, source data is received at multiple data terminals, each in communication with an aggregator terminal over a communication link. For example, during a live newscast, one mobile camera may receive live video of an event from a first position while another mobile camera receives live video of the event from a second position. For various reasons (e.g., as the cameras move) each communication link may experience independently changing link conditions. Each data terminal encodes the source data (or store source data for later encoding) as a function of its respective link conditions, and transmits encoded source data over its respective communication link to the aggregator terminal. | 03-29-2012 |
| 20120082209 | METHOD AND APPARATUS FOR DYNAMICALLY ADJUSTING VIDEO QUALITY - A system, apparatus, method and article for dynamic adjustment of video quality are described. The apparatus may include a power status module to receive power status information for a communication device, and a video quality adjustment module to adjust at least one aspect of video data captured by the device based on power status of the device. The power status can include information regarding the battery power level of the device. The adjusted aspect of video data can be an encoding aspect of the video data. The adjusted aspect of video data can be a quantization level and/or a motion estimation range of said video data. Other embodiments are described and claimed. | 04-05-2012 |
| 20120082210 | CODING PREDICTION MODES IN VIDEO CODING - A video encoder can maintain, by generating, storing, adjusting, altering, and/or updating, one or more variable length coding (VLC) tables that represent a mapping of prediction modes to codewords. One or more codewords representing a selected prediction mode can be communicated to the decoder for a CU of a frame. The decoder maintains one or more VLC tables that match the VLC tables maintained by the video encoder. Thus, based on the one or more codewords received from the video encoder, the video decoder can determine the prediction mode used to encode a CU. | 04-05-2012 |
| 20120082213 | IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD - An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal | 04-05-2012 |
| 20120093217 | Method and Apparatus for Processing Video Signals - The present invention relates to a method and apparatus for processing video signals, the method comprising: decoding a current frame of a video signal in block units to generate a restored frame, and acquiring first and second flags to acquire a filter coefficient which is adaptively determined from the video signal for each slice on the basis of flag information, or performing deblocking filtering with a predetermined filter coefficient. The present invention relates to a video signal processing method which includes an inter-frame prediction method that determines a motion vector, and a method for performing inter-frame prediction for a residual image. The method for processing video signals can increase the compression encoding efficiency by performing accurate motion prediction and residual image prediction, and can improve the quality of a restored image by removing distortion and performing a filtering for restoring an image that is close to the original image. | 04-19-2012 |
| 20120093218 | ADAPTIVE MULTIMEDIA DECODING DEVICE AND METHOD FOR SCALABLE SATELLITE BROADCASTING - Disclosed is an adaptive multimedia decoding device and method for scalable satellite broadcasting. A TS decoder TS-decodes a first transmission stream and a second transmission stream received through different transmission bands to generate a first video stream, a second video stream, and an audio stream. A first decoder and a second decoder are configured of a plurality of operation modules that are sequentially performed so as to decode the first video stream, the second video stream, and the audio stream and are independently controlled and are operated in parallel. A controller compares the amount of data corresponding to one input unit of the first video stream and the second video stream input to each of the first decoder and the second decoder, to selectively perform each operation module configuring the first decoder and the second decoder whenever the data corresponding to one input unit are input. | 04-19-2012 |
| 20120099641 | METHOD AND APPARATUS FOR ADJUSTING VIDEO COMPRESSION PARAMETERS FOR ENCODING SOURCE VIDEO BASED ON A VIEWER'S ENVIRONMENT - A policy enforcement device performs a method for adjusting video compression parameters for encoding source video based on a viewer's environment. The method includes: receiving, from a video receiving device, a video stream identifier indicating a video stream and a source of the video stream, wherein the video receiving device is remote from the source of the video stream; receiving an indication of environmental conditions of a viewer of the video stream using the video receiving device; determining a set of video compression parameters based on the indication of environmental conditions of the viewer; sending the set of video compression parameters to the identified source of the video stream to enable encoding of the video stream to a different compression level. | 04-26-2012 |
| 20120106623 | ADAPTING A VIDEO STREAM - Adapting characteristics of a video stream. A source video stream is received comprising instructions to employ at least one reference frame at a video adaptation device, wherein the source video stream is encoded. The source video stream is adapted, at the video adaptation device, such that the instructions are adapted to store a different number of reference frames. A video stream is produced with the different number of the reference frames. | 05-03-2012 |
| 20120106624 | Method and Apparatus of Slice Boundary Filtering for High Efficiency Video Coding - An apparatus and method for video coding having intra-slice deblocking, intra-slice adaptive loop filter, and intra-slice adaptive offset are disclosed. In a video coding system, a picture is often divided into slices and each slice is independently processed so that errors or missing data from one slice cannot propagate to any other slice within the picture. In the recent high efficiency video coding (HEVC) development, deblock filtering (DF), adaptive loop filter (ALF) and adaptive offset (AO) may be applied to reconstructed slices. When the processing is applied across slice boundaries, it may rely on pixels outside the current slice and cause dependency of the current slice on other slice(s). Consequently, the DF/ALF/AO processing on a reconstructed slice may have to wait until the reconstructed slices that it is dependent from complete the DF/ALF/AO processing. To overcome the slice boundary issue, intra-slice DF/ALF/AO is developed that does not rely on any pixel outside the currently slice. An optional slice boundary filter may be applied to slice boundaries after all slices are processed by the intra-slice DF/ALF/AO. | 05-03-2012 |
| 20120106625 | ADAPTING VIDEO STREAM FOR ERROR RESILIENCE - Adapting characteristics of a video stream. A video stream is received, at a video adaptation device, which employs a first reference frame. A determination is made, at a video adaptation device, to splice the video stream to employ a second reference frame in place of the first reference frame. The video stream is spliced, at a video adaptation device, to create a spliced video stream that employs the second reference frame. | 05-03-2012 |
| 20120106627 | METHODS AND APPARATUS FOR VIDEO ENCODING AND DECODING USING ADAPTIVE GEOMETRIC PARTITIONING - Methods and apparatus are provided for video encoding and decoding using adaptive geometric partitioning. An apparatus includes an encoder for encoding picture data for a region in a picture using adaptive geometric partitioning, wherein a subset of geometric partitions used to code the picture data for the region is determined responsive to at least one of a distance and an angle. The distance is measured from a defined point within the region to a partition boundary. The angle is measured with respect to at least a line extending from the defined point within the region to the partition boundary. | 05-03-2012 |
| 20120106628 | METHODS AND APPARATUS FOR VIDEO ENCODING AND DECODING BINARY SETS USING ADAPTIVE TREE SELECTION - Methods and apparatus are provided for encoding and decoding binary sets using adaptive tree selection. In one exemplary encoding method embodiment, picture data is encoded for a block in a picture; in which one of a plurality of trees structures is selected to code a binary set of data for indicating coefficient significance for the block. In another exemplary encoding method embodiment, picture data is encoded for a block in a picture, in which one or more trees are used to encode a binary set of data for indicating coefficient significance for the block, the one or more trees each having a plurality of nodes, at least one of the nodes of the one or more trees being modified responsive to at least one parameter. | 05-03-2012 |
| 20120106629 | METHODS AND APPARATUS FOR SIGNALING INTRA PREDICTION FOR LARGE BLOCKS FOR VIDEO ENCODERS AND DECODERS - Methods and apparatus are provided for signaling intra prediction for large blocks for video encoders and decoders. An apparatus includes a video encoder for encoding picture data for at least one large block in a picture by signaling intra prediction for the at least one large block. The intra prediction is signaled by selecting a basic coding unit size and assigning a single spatial intra partition type for the basic coding unit size. The single spatial intra partition type is selectable from among a plurality of spatial intra partition types. The at least one large block has a large block size greater than a block size of the basic coding unit. The intra prediction is hierarchical layer intra prediction and is performed for the at least one large block by at least one of splitting from the large block size to the basic coding unit size and merging from the basic coding unit size to the large block size. | 05-03-2012 |
| 20120121008 | MEMORY ACCESS DEVICE AND VIDEO PROCESSING SYSTEM - Required-bandwidth obtaining units are provided in respective function blocks, and each output required-bandwidth information representing the required bandwidth of a corresponding function block based on the horizontal frequency and the number of effective pixels per period of a horizontal synchronization signal. A memory bus arbiter calculates the sum of the required bandwidths of all the function blocks based on the required-bandwidth information, and determines whether or not the sum of the required bandwidths of all the function blocks exceeds the entire bandwidth of the data bus. If it is determined that the sum of the required bandwidths exceeds the entire bandwidth, the required bandwidth of at least one of the function blocks is reduced, while if it is determined that the sum of the required bandwidths does not exceed the entire bandwidth, all the function blocks access the memory using the required bandwidths at the time of required bandwidth calculation. | 05-17-2012 |
| 20120121009 | METHODS AND APPARATUS FOR ADAPTIVE TRANSFORM SELECTON FOR VIDEO ENCODING AND DECODING - Methods and apparatus are provided for adaptive transform selection for video encoding and decoding. An apparatus includes a video encoder for encoding at least a block in a picture using a transform. The transform used to encode the block is selected from a plurality of transforms. The plurality of transforms is adaptively updated during the encoding of the picture. | 05-17-2012 |
| 20120128059 | Method of adaptive motion estimation in search windows for video coding - The invention discloses a method of adaptive motion estimation in search windows for video coding, which uses adjacent MBs to predict the range of search window, storing MVs of adjacent MBs respectively for each reference frame, then using MVs of three adjacent MBs to delimit the scope of search window on the same reference frame. It could derive the most similar MB from the scope of search window than the current MB. | 05-24-2012 |
| 20120128060 | Method and Apparatus of Spatial Motion Vector Prediction - An apparatus and method for deriving a motion vector predictor or a motion vector predictor candidate or a motion vector or a motion vector candidate for a current block are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted or stored. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector coding. The MVP technique being developed for the current HEVC only considers the motion vector having the same reference list and the same reference picture index as the current block to be an available spatial motion vector predictor candidate. It is desirable to develop a MVP scheme that can improve the availability of the motion vector predictor candidate based on motion vectors from the spatially neighboring block. Accordingly, an apparatus and method for determining a motion vector predictor or motion vector predictor candidate or motion vector or motion vector candidate for a current block based on motion vectors associated with reference pictures in list | 05-24-2012 |
| 20120128061 | DYNAMIC TIME SYNCHRONIZATION - A method is provided in certain example embodiments and may include evaluating a first video stream being encoded by a first encoding element, where the first video stream is provided at a first bit rate. The method may also include evaluating a second video stream being encoded by a second encoding element, where the second video stream is provided at a second bit rate. The method may further include providing an output that is reflective of a time synchronization and a frame alignment for a plurality of frames within the first video stream and the second video stream. | 05-24-2012 |
| 20120128062 | METHOD AND APPARATUS FOR SPLICING A COMPRESSED DATA STREAM - A method of splicing a first data stream and a second data stream is disclosed. The method comprising detecting a splice in-point and a splice out-point within the first data stream, wherein the splice in-point is a frame in the first data stream and in the splice out-point is another frame in the first data stream. The method further identifies splice-in opportunity point and a splice-out opportunity point from a plurality of splice opportunity points (SOPs) in the first data stream, wherein the splice-in opportunity point corresponds to the splice in-point and the splice-out opportunity point corresponds to the splice out-point, wherein the splice-in opportunity point and the splice-out opportunity point are frames of the first data stream. The method replaces at least one frame of the first data stream with at least one frame of the second data stream, wherein the replacement of the frames of the first data stream starts onwards the splice-in opportunity point and ends at the splice-out opportunity point; and wherein the first data stream includes a plurality of frames and the second data stream includes a plurality of frames. The method performs the splicing operation without de-packetization of the first data stream. In addition, the replacement of the frames does not require re-ordering of the frames of the first data stream. | 05-24-2012 |
| 20120128063 | CHANNEL ADAPTIVE VIDEO TRANSMISSION SYSTEM FOR USE WITH LAYERED VIDEO CODING AND METHODS FOR USE THEREWITH - A video transmission system includes a transceiver module that transmits a video signal to a remote device over at least one communications channel wherein the video signal is transmitted as at least one separate video layer stream chosen from, an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A control module determines at least one channel characteristic of the at least one channel and chooses the at least one separate video layer stream based on the at least one channel characteristic of the at least one channel. | 05-24-2012 |
| 20120140813 | SEPARATELY CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT OF A VIDEO BLOCK IN VIDEO CODING - In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code information that identifies a position of a last non-zero coefficient within the block according to a scanning order associated with the block prior to coding information that identifies positions of other non-zero coefficients within the block, including at least one of the following: coding a one-dimensional position within the block that identifies the position of the last non-zero coefficient; coding a two-dimensional position within the block that identifies the position of the last non-zero coefficient, and coding a flag that indicates whether the last non-zero coefficient is located within a range of positions within the block, and coding the one-dimensional position when the last non-zero coefficient is located within the range, and otherwise coding the two-dimensional position. | 06-07-2012 |
| 20120140814 | CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT WITHIN A VIDEO BLOCK BASED ON A SCANNING ORDER FOR THE BLOCK IN VIDEO CODING - In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to a scanning order associated with the block when the scanning order comprises a first scanning order, and code interchanged x- and y-coordinates that indicate the position of the last non-zero coefficient within the block according to the scanning order when the scanning order comprises a second scanning order, wherein the second scanning order is different than the first scanning order. | 06-07-2012 |
| 20120147946 | Wireless channel aware adaptive video bit rate encoding - A determination and query is performed on wireless channel on which video data is transmitted from a transmitting wireless display or WiDi device. Based on a channel capacity and implementing an algorithm, the encoding bit rate at the transmitting WiDi device is adaptively adjusted based on the determined channel capacity. | 06-14-2012 |
| 20120147947 | CODEWORD ADAPTATION FOR VARIABLE LENGTH CODING - In one example, this disclosure describes a method of codeword adaptation for variable length coding. The method includes applying a first codeword adaptation scheme to groups of codewords in a variable length coding (VLC) table to change mappings of codewords within the groups to events in the VLC table; and applying a second codeword adaptation scheme to individual codewords within the groups of codewords in the VLC table to change mappings of the codewords to the events within the groups in the VLC table. | 06-14-2012 |
| 20120147948 | METHODS AND APPARATUS FOR EXPLICIT UPDATES FOR SYMBOL PROBABILITIES OF AN ENTROPY ENCODER OR DECODER - Methods and apparatus are provided for explicit updates for symbol probabilities of an entropy encoder or decoder. An apparatus includes a video encoder having an entropy encoder for encoding symbols for picture data for at least a portion of a picture. An explicit update function is used to update probabilities of the symbols processed by the entropy encoder. The explicit update function at least one of is truncated at a threshold value and has a varying rate of adaptation. | 06-14-2012 |
| 20120147949 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 06-14-2012 |
| 20120147950 | VIDEO FRAME ENCODING AND DECODNG - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 06-14-2012 |
| 20120147951 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 06-14-2012 |
| 20120147952 | METHOD AND APPARATUS FOR H.264 TO MPEG-2 VIDEO TRANSCODING - A method for transcoding from an H.264 format to an MPEG-2 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the H.264 format to generate a picture having a plurality of macroblock pairs that used an H.264 macroblock adaptive field/frame coding; (B) determining a mode indicator for each of the macroblock pairs; and (C) coding the macroblock pairs into an output video stream in the MPEG-2 format using one of (i) an MPEG-2 field mode coding and (ii) an MPEG-2 frame mode coding as determined from the mode indicators. | 06-14-2012 |
| 20120155532 | CONTENT ADAPTIVE QUALITY RESTORATION FILTERING FOR HIGH EFFICIENCY VIDEO CODING - A system and method for impairments compensation filtering is described that can be used either in conjunction with video coding, or standalone for postprocessing. It uses a wiener filtering approach in conjunction with an efficient codebook representation. | 06-21-2012 |
| 20120155533 | CONTENT ADAPTIVE MOTION COMPENSATION FILTERING FOR HIGH EFFICIENCY VIDEO CODING - A system and method for adaptive motion filtering to improve subpel motion prediction efficiency of interframe motion compensated video coding is described. The technique uses a codebook approach that is efficient in search complexity to look-up best motion filter set from a pre-calculated codebook of motion filter coefficient set. In some embodiments, the search complexity is further reduced by partitioning the complete codebook into a small base codebook and a larger virtual codebook, such that the main calculations for search only need to be performed on the base codebook. | 06-21-2012 |
| 20120163447 | 3:2 Pull Down Detection in Video - Methods for processing of video sequences that may contain telecined (3:2 pull down) frame sequences are provided. A method for detecting 3:2 pull down is provided that measures vertical detail in frames of a video sequence and uses the variation in vertical detail over time to decide whether the video sequence contains normal interlace content or 3:2 pull down content. A method for improving the compression of detected 3:2 pull down content is also provided that controls the selection of field or frame coding mode for frames of 3:2 pull down content and the selection of reference fields for encoding duplicated fields in the 3:2 pull down content. | 06-28-2012 |
| 20120163448 | CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT OF A VIDEO BLOCK IN VIDEO CODING - In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code information that identifies a position of a last non-zero coefficient within the block according to a scanning order associated with the block, wherein to code the information, the video coder is configured to perform a context adaptive entropy coding process that includes the video coder applying a context model based on at least three contexts, wherein the at least three contexts include a size associated with the block, a position of a given one of the coefficients within the block according to the scanning order, and the scanning order. | 06-28-2012 |
| 20120170645 | VIDEO FILTERING USING A COMBINATION OF ONE-DIMENSIONAL SWITCHED FILTER AND ONE-DIMENSIONAL ADAPTIVE FILTER - In one example, this disclosure describes a method of loop filtering of reconstructed video data during a video coding process. The method may comprising applying a one-dimensional (1D) switched filter to the video data in a first dimension that is either horizontal or vertical, and applying a 1D adaptive filter to the video data in a second dimension that is perpendicular to the first dimension. | 07-05-2012 |
| 20120170646 | METHOD AND APPARATUS FOR SPACIAL SCALABILITY FOR HEVC - In a video distribution system, a divider ( | 07-05-2012 |
| 20120177103 | APPARATUS AND METHOD OF EFFICIENT SAMPLE ADAPTIVE OFFSET - For sample adaptive offset, classification may be used to classify the pixels into multiple categories and pixels in each category are offset compensated using an offset value for the category. The classification may be based on values of the current pixel and its neighboring pixels before SAO compensation. Therefore, the SAO compensated pixel cannot be written back to the current pixel location until the category for all pixels are determined. An embodiment of the present invention stores the relation between the current pixel and said one or more neighboring pixels so that the SAO compensated current pixel can replace the current pixel without buffering the to-be-processed pixels for classification. The SAO process may be performed on a region by region basis to adapt to the local characteristics of the picture. Rate-distortion optimization (RDO) is often used to guide the mode decision, such as region splitting/region merging decision. Computations associated with the RDO process usually are very computational intensive. Accordingly, distortion reduction estimation is developed which can substantially reduce the required computation associated with RDO. | 07-12-2012 |
| 20120177104 | Reduced Complexity Adaptive Loop Filter (ALF) for Video Coding - Methods and apparatus for adaptive loop filtering in video coding are provided. The adaptive loop filtering may be largest coding unit (LCU) based, may use adaptive loop filter types in which the vertical size of a filter type is less than the horizontal size, may use a predefined set of filter types in which the vertical size of the largest filter type in the set is less than the horizontal size of the largest filter type in the set, may use a single adaptive loop filter type, and/or may use a filter type that is a cross with a center shape of a size dependent on an aspect ratio of the cross. | 07-12-2012 |
| 20120177105 | SYSTEMS AND METHODS FOR SELECTING BUFFERING TIME FOR MEDIA DATA - The invention is related to methods and apparatus for tailoring an amount of Pre-Data that can be used in media clip streaming applications. A variable-bit-rate encoded media clip can be encoded at an average playback bit rate. When the actual transmission bit rate exceeds the average playback bit rate, a maximum bit deficit computation that uses the average playback bit rate overestimates the amount of Pre-Data that can be used to buffer the media clip. Embodiments of the invention tailor the amount of Pre-Data at least in part to the amount of data used to encode intervals of data and to actual transmission bit rates or to predictions of actual transmission bit rates, thereby decreasing the amount of Pre-Data that can be used and decreasing a latency time before play of the media clip begins. | 07-12-2012 |
| 20120183039 | CODING STATIC VIDEO DATA WITH A BASELINE ENCODER - In general, techniques are described for encoding static video data using a baseline video encoder. A device comprising a baseline video encoder, a wireless interface and a control unit may implement the techniques. The baseline video encoder encodes a portion of this static video data at a first quality. The wireless interface wirelessly transmits the encoded first portion to a remote display device. The control unit identifies a region of interest in the portion of the video data to be re-encoded at a second quality, where the second quality is higher than the first quality. The baseline video encoder re-encodes the identified region of interest at the second quality without re-encoding any other regions of the portion of the video data at the second quality. The wireless interface wirelessly transmits the re-encoded identified region of interest to the remote display device. | 07-19-2012 |
| 20120183040 | Dynamic Video Switching - In an example, a dynamic codec allocation method is provided. The method includes receiving a plurality of datastreams and determining a respective codec loading factor for each of the datastreams. The datastreams are assigned to codecs, in order by respective codec loading factor, starting with the highest respective codec loading factor. Initially, the datastreams are assigned to a hardware codec, until the hardware codec is loaded to substantially maximum capacity. If the hardware codec is loaded to substantially maximum capacity, the remaining datastreams are assigned to a software codec. As new datastreams are received, the method repeats, and previously-assigned datastreams can be reassigned from a hardware codec to a software codec, and vice versa, based on their relative codec loading factors. | 07-19-2012 |
| 20120183041 | INTERPOLATION FILTER FOR INTRA PREDICTION OF HEVC - 4-tap interpolation filters are able to improve intra prediction when used instead of linear interpolation. | 07-19-2012 |
| 20120183042 | Methods and Systems for Facilitating Multimedia Data Encoding - Several methods and systems for facilitating multimedia data encoding are disclosed. In an embodiment, a plurality of picture buffers associated with multimedia data are received in an order of capture associated with the plurality of picture buffers. Buffer information is configured for each picture buffer from among the plurality of picture buffers comprising at least one of a metadata associated with the corresponding picture buffer and one or more encoding parameters for the corresponding picture buffer. A provision of picture buffers in an order of encoding is facilitated based on the configured buffer information. | 07-19-2012 |
| 20120189048 | IMAGE RECORDING DEVICE, IMAGE REPRODUCTION DEVICE, AND IMAGE RECOVERY DEVICE - A video recording device comprises an input unit, an encode unit, and an output unit. A plurality of channels of video data is inputted to an input unit. An encode unit is configured to adjust the GOP structure and frame size to be the same in the plurality of channels of video data to the input unit, and compress and encode the plurality of channels of video data inputted at a variable bit rate. An output unit is configured to output the plurality of channels of video data compressed and encoded by the encode unit. | 07-26-2012 |
| 20120189049 | SUB-SLICES IN VIDEO CODING - A video encoder partitions a slice of a picture into a plurality of sub-slices. When the video encoder encodes the slice, the video encoder generates a coded slice that includes coded sub-slices that correspond to the sub-slices. Each of the sub-slices can be parsed independently of each other one of the sub-slices and can be reconstructed independently of each other one of the sub-slices. Accordingly, a video decoder may parse two or more of the sub-slices in parallel and decode two or more of the sub-slices in parallel. | 07-26-2012 |
| 20120195364 | DYNAMIC MODE SEARCH ORDER CONTROL FOR A VIDEO ENCODER - A system and method for coding video data wherein a coding mode decision process may be dynamically adjusted according to any of a plurality of factors including video image content, image complexity, motion, channel conditions, the status of the video system components, or other relevant factor. Each of a plurality of potential coding modes may be assigned a weight reflecting an estimation of the likelihood that the coding mode will result in quality image data. The coding mode decision process may then be altered by changing the order of coding modes attempted according to the assigned weight. Code removal and early termination may further alter the coding mode decision process. | 08-02-2012 |
| 20120195365 | SPATIAL SCALABILITY USING REDUNDANT PICTURES AND SLICE GROUPS - Systems and methods for using redundant pictures and slice groups to encode spatially scalable H.264 Baseline profile conformant video and to route that video to endpoints of varying capabilities without using the Scalable Video extension of H.264 or transcoding. Reduced resolution versions of primary coded pictures are encoded as slice groups in a full-resolution composite pictures, which are added to the video bitstream as redundant pictures. A router then processes the spatially scaled video bitstream into separate streams having different resolutions and routes these to endpoints of varying capabilities. | 08-02-2012 |
| 20120195366 | Method and Apparatus of Adaptive Inter Mode Coding Using Variable Length Codes - A method and apparatus for adaptive inter prediction mode coding are disclosed. In the current HEVC, a fixed set of variable length codes is used for the underlying video data, which may not optimally match the statistics of underlying video data. Consequently, the compression efficiency associated with the fixed set of variable length codes will be compromised. Accordingly, an adaptive coding scheme for inter prediction modes is disclosed. The variable length codes used for each inter prediction mode in each coding unit depth is adaptively determined by its respective statistics. The statistics can be measured as the frequency of occurrence of each mode. In one embodiment according to the present invention, counters are used to collect the statistics. According to one embodiment of the present invention, the statistics of inter prediction modes are collected from the previous slice and the set of variable length codes is determined for the subsequent slice (immediately following the previous slice) accordingly. According to another embodiment of the present invention, the statistics of inter prediction modes are updated for each coding unit and the variable length code for each mode is adjusted according to the statistics change during the coding process. According to another embodiment of the present invention, the variable length code for each mode is reset in the beginning of each slice. The reset code word table is either a predefined code word table for whole sequence or a code word table determined by the previous slice. | 08-02-2012 |
| 20120195367 | ADAPTIVE LOOP FILTERING USING TABLES OF FILTER SETS FOR VIDEO CODING - Disclosed are adaptive loop filtering techniques for video encoding and/or decoding. For a video unit, the encoder selects a set of predefined filters or generates a set of new filters, and places into the bitstream information identifying the set of predefined filters, or information defining the set of new filters. The set of filters may be used for loop filtering of at least one of the reconstructed samples of the video unit. At the decoder, a set of filters may be obtained by, decoding an index that identifies a set of predefined filters, or by decoding information related to a set of new filters. The obtained set of filters may be used for loop filtering of at least one decoded and reconstructed sample of the video unit. | 08-02-2012 |
| 20120195368 | PERFORMING MOTION VECTOR PREDICTION FOR VIDEO CODING - In general, techniques are described for performing motion vector prediction for video coding. An apparatus comprising a motion compensation unit may implement the techniques. The motion compensation unit determines spatial candidate motion vectors (MVPs) associated with a current portion of a video frame and prunes the spatial candidate motion vectors to remove duplicates without removing a temporal candidate motion vector. The motion compensation unit selects one of the temporal candidate motion vector or one of the spatial candidate motion vectors remaining after pruning as a selected candidate motion vector based on a motion vector predictor (MVP) index signaled in a bitstream and performs motion compensation based on the selected candidate motion vector. | 08-02-2012 |
| 20120195369 | ADAPTIVE BIT RATE CONTROL BASED ON SCENES - An encoder for encoding a video stream is described herein. The encoder receives an input video stream, scene boundary information that indicates positions n the input video stream where scene transitions occur and target bit rate for each scene. The encoder divides the input video stream into a plurality of sections based on the scene boundary information. Each section comprises a plurality of temporally contiguous image frames. The encoder encodes each of the plurality of sections according to the target bit rate, providing adaptive bit rate control based on scenes. If a video quality bar is met at a lower bit-rate, there is no need to encode the same section at a higher bit-rate since the quality bar has already been met. | 08-02-2012 |
| 20120195370 | Encoding of Video Stream Based on Scene Type - An encoder for encoding a video stream or an image is described herein. The encoder receives an input video stream and outputs an encoded video stream that can be decoded at a decoder to recover, at least approximately, an instance of the input video stream. The encoder encodes a video stream by first identifying scene boundaries and encoding frames between scene boundaries using a set of parameters. For at least two different scene sequences, different sets of parameters are used, providing adaptive, scene-based encoding. | 08-02-2012 |
| 20120195371 | METHODS AND APPARATUS FOR VIDEO ENCODING AND DECODING BINARY SETS USING ADAPTIVE TREE SELECTION - Methods and apparatus are provided for encoding and decoding binary sets using adaptive tree selection. In one exemplary encoding method embodiment, picture data is encoded for a block in a picture; in which one of a plurality of trees structures is selected to code a binary set of data for indicating coefficient significance for the block. In another exemplary encoding method embodiment, picture data is encoded for a block in a picture, in which one or more trees are used to encode a binary set of data for indicating coefficient significance for the block, the one or more trees each having a plurality of nodes, at least one of the nodes of the one or more trees being modified responsive to at least one parameter. | 08-02-2012 |
| 20120201291 | IMAGE CODING APPARATUS AND METHOD - An image coding apparatus includes: a division unit configured to divide a coding target picture included in an input video signal into a plurality of slices each including one or more data blocks; a coding unit configured to code the video signal in a unit of the slice divided by the division unit; and a setting unit configured to set at least one of a division position of the slice and a number of divisions of the slice, to the division unit. In the image coding apparatus, the setting unit sets at least one of the division position of the slice and the number of divisions of the slice so that slice boundaries differ from each other between adjacent pictures. | 08-09-2012 |
| 20120201292 | SYSTEM AND METHOD FOR CONTROLLING THE LONG TERM GENERATION RATE OF COMPRESSED DATA - The present invention comprises a system and method for controlling the rate a data encoder generates compressed data. The system and method are preferably implemented as program code stored and executed by a processor or computer that is interfaced to standard variable or constant bit rate encoders known in the art. The system preferably encodes and compresses video signals received from a camera, and controls the rate at which the compressed data is generated by the encoder so that storage capacity reserved for the compressed data will not be exceeded. The device preferably takes advantage of periods when the data generation rate is low to increase the quality of video data generated during periods of high activity. | 08-09-2012 |
| 20120201293 | METHODS AND APPARATUS FOR ADAPTIVE CODING OF MOTION INFORMATION - Methods and apparatus are provided for adaptive coding of motion information. An apparatus includes an encoder for encoding at least a block in a picture using a motion vector. An adaptive motion vector accuracy scheme is used to select an accuracy of the motion vector used to encode the block. Selection criteria for selecting the accuracy for the motion vector include non-rate-distortion-based criteria. | 08-09-2012 |
| 20120201294 | METHODS FOR PARALLEL VIDEO ENCODING AND DECODING - Aspects of the present invention are related to methods and devices for parallel video encoding and decoding. Aspects can include a method for encoding a video frame of a video sequence in an encoder, comprising partitioning a frame of a video sequence into at least one reconstruction slice, thereby producing a first reconstruction slice, and partitioning said first reconstruction slice into a plurality of entropy slices, wherein a number of bins associated with each entropy slice in said plurality of entropy slices is less than or equal to a predefined number of bins. | 08-09-2012 |
| 20120213271 | MULTI-METRIC FILTERING - An encoder can generate a series of codewords to signal to a decoder a mapping of range combinations for two or more metrics. The encoder can generate a first codeword to indicate a current combination being decoded maps to the same filter as the most recently decoded combination that shares the same range for the first metric. The encoder can generate a second codeword to indicate that the current combination maps to the same filter as the most recently decoded combination that shares the same range for the second metric. If the current combination does not map to the same filter as either of these most recently decoded combinations, then the encoder can generate a third codeword that indicates the filter that maps to the current combination. | 08-23-2012 |
| 20120213272 | METHOD AND SYSTEM FOR ADJUSTING VIDEO AND AUDIO QUALITY OF VIDEO STREAM - In a method for adjusting video or audio quality of a video stream, a video stream request for requesting an original target video stream from a client is received. Then, information about a connection bandwidth of the client is obtained, and a step is performed for determining if the connection bandwidth of the client is sufficient for receiving the target video stream. When it is determined that the connection bandwidth of the client is insufficient, at least one video or audio parameter is selected according to the information about the connection bandwidth of the client to adjust and reduce the video or audio quality of the target video stream, and the quality-reduced target video stream is transmitted to the client. Information about connection bandwidth of the client is continually obtained for transmitting all of the target video stream to the client. | 08-23-2012 |
| 20120219053 | DEVICE TO TRANSMIT DATA BY DISPLAYING A CODED IMAGE GENERATED ACCORDING TO A SELECTABLE ENCODING SCHEME AND ASSOCIATED METHODS - A communications system includes a first device with a first display, and a first processor configured to generate at least one coded image according to a selectable encoding scheme from among different encoding schemes, and display the coded image on the first display. A first communications device is coupled to the first processor. A second device includes a second camera configured to capture the coded image on the first display, a second communications device, and a second processor coupled to the second camera and the second communications device. The second processor is configured to send a status message, via the second and first communications devices to the first processor, related to whether the captured coded image is decodable based upon a currently selected encoding scheme. | 08-30-2012 |
| 20120224622 | Adaptive Filtering for Bit-Depth Scalable Video Codec - Adaptive filtering may be used to increase the quality of tone mapped, baseline layer encoded information. As a result, scalable video codecs may be implemented with improved picture quality in some embodiments. | 09-06-2012 |
| 20120230390 | Adaptive Control of Encoders for Continuous Data Streaming - Active control of the output bit-rate of a system of constant bit-rate encoders is provided to match their aggregate bit-rate to the available network bit-rate of a communication channel over which a packetized data stream is to be transmitted. Cross-layer optimization is achieved between network layer performance metrics, such as queue size, round-trip-time delay, and available bit-rate, and application layer requirements of the data encoders, such as output bit-rate, input frame-rate, and packet loss, through a tight coupling of these parameters. Complex run-time calculations or heavy network probing are avoided while achieving the beneficial results, which is advantageous in systems that deal with real-time applications, such as live video streaming for video surveillance and security. | 09-13-2012 |
| 20120230391 | High Performance AVC Encoder on a Multi-Core Platform - A method and system for encoding a digital video signal using a plurality of parallel processors. A digital picture is received that is composed of one or more GOPs. The CPU then determines the number of GOPs that need to be encoded and divides them into groups. The number of GOPs in a group may equal the number of parallel processors in the multi-core platform available to encode. The CPU transfers in a single batch to the multi-core platform, a frame of equal rank from each GOP contained in the first group. The multi-core platform encodes the frames in parallel, rearranges the encoded byte stream chunk into normal display order sequence and stores the encoded byte stream. The process may repeat until all the GOPs in the first group have been encoded. Upon completion the multi-core platform outputs the encoded byte stream in normal display order sequence. | 09-13-2012 |
| 20120230392 | MOTION VECTOR PREDICTORS (MVPs) FOR BI-PREDICTIVE INTER MODE IN VIDEO CODING - This disclosure describes video coding techniques applicable to a bi-predictive inter mode that uses adaptive motion vector prediction (AMVP). In particular, this disclosure describes techniques for encoding or decoding video data in which AMVP is used to code a first motion vector and a second motion vector associated with a current video block that is coded in the bi-predictive inter mode. More specifically, this disclosure describes techniques in which one motion vector of a bi-predictive video block can be used to define a candidate motion vector predictor (MVP) for predicting another motion vector of the bi-predictive video block. In many examples, a scaled version of the first motion vector of the bi-predictive video block is used as the MVP for the second motion vector of the bi-predictive video block. By defining an additional MVP candidate for the second motion vector of a bi-predictive video block, improved compression may be achieved. | 09-13-2012 |
| 20120230393 | METHODS AND APPARATUSES FOR ENCODING AND DECODING VIDEO USING ADAPTIVE INTERPOLATION FILTER LENGTH - Recent video coding schemes support different size of interpolation filter length for interpolation process. However, the schemes are using fixed, one sized interpolation filter length for all different size of picture resolutions and all different size of inter predicted units, leading to undesired large memory bandwidth usage. Especially for large spatial resolution images or large prediction blocks, the required memory bandwidth is substantially increased by using fixed interpolation filter length. The current invention provides methods and apparatuses for selecting the different interpolation filter coefficients adaptively based on a pre-determined interpolation filter length selection scheme. The benefit of the current invention is in the form of saving memory bandwidth usage. | 09-13-2012 |
| 20120230394 | METHODS AND APPARATUS FOR IMPROVED CHROMA TRANSFORMS FOR INTER FRAMES IN VIDEO ENCODING AND DECODING - Methods and apparatus are provided for improved chroma transforms for inter frames in video encoding and decoding. The apparatus and method encode at least a portion of a picture using inter-coding, wherein a transform is adaptively selected, from among a plurality of transforms, to apply to chroma components of the portion responsive to at least one selection criterion ( | 09-13-2012 |
| 20120236929 | CONTEXT ADAPTATION WITHIN VIDEO CODING MODULES - Context adaptive video coding is described in which encoding and decoding relies on deriving context adaptive coding tools, which can be applied within a coder (encoder and/or decoder) to one or more coding processes. A discontinuity of the block is identified, and a context feature extracted having directionality and location of discontinuity. Coding then uses the context adaptive tools to enhance coding efficiency, without the need of additional side information. Context adaptation according to invention can be applied such as to inter prediction, intra prediction, transform, interpolation filtering, and/or scanning. | 09-20-2012 |
| 20120236930 | MPEG-W DECODER - A device comprising a Moving Picture Experts Group (MPEG)-W decoder; and one or more processing systems to execute the instructions of the MPEG-W decoder, which configure the one or more processing systems to receive a request for streaming content; select an estimate of a bandwidth for a connection between a destination device and a source device; select a device type pertaining to the destination device; generate a stream request that includes an MPEG-W link, the estimate of the bandwidth, the device type, the MPEG-W link including an address pertaining to the source device, a name of the streaming content, and a file extension of an MPEG-W format; transmit the stream request to the source device; select a streaming content based on the stream request; wherein the streaming content has a resolution corresponding to the estimate of the bandwidth; and transmitting the streaming content to the destination device. | 09-20-2012 |
| 20120236931 | TRANSFORM COEFFICIENT SCAN - This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video encoder may adaptively scan a first plurality of coefficients of a two-dimensional matrix of coefficients, and use a fixed scan technique for a second plurality of coefficients of the two-dimensional matrix, to generate a one-dimensional vector of transform coefficients. Also according to these techniques, a video decoder may adaptively scan a first plurality of coefficients of a one-dimensional vector of coefficients, and use a fixed scan technique for a second plurality of coefficients of the one-dimensional vector, to generate a two-dimensional matrix of transform coefficients. | 09-20-2012 |
| 20120236933 | DIGITAL BROADCAST RECEIVING APPARATUS, DIGITAL BROADCAST RECEIVING METHOD AND COMPUTER PROGRAM - A digital broadcast receiving apparatus with enhanced tuning speed is provided. The digital broadcast receiving apparatus includes a data separating unit that separates the encoded stream of a tuned broadcast program and a plurality of latest tuning information from a digital broadcast stream, on the basis of stored tuning information recorded in a tuning information table, a decoding unit that performs a decoding process on the separated encoded stream, and a tuning control unit. The tuning control unit concurrently executes a first reception confirmation process to decide whether first tuning information included in the latest tuning information is consistent with the stored tuning information and a second reception confirmation process to decide whether second tuning information in the latest tuning information is consistent with the stored tuning information. The tuning control unit executes the first and second reception confirmation processes concurrently with the decoding process. | 09-20-2012 |
| 20120243602 | METHOD AND APPARATUS FOR PIPELINED SLICING FOR WIRELESS DISPLAY - Certain aspects of the present disclosure propose methods for processing display data in a pipelined manner. According to certain aspects, a slice size may be selected in a manner that allows for efficient pipelining, which may help achieve acceptable medium access control (MAC) efficiency and reduced latency. | 09-27-2012 |
| 20120250757 | POLYMORPHIC CODEC SYSTEM AND METHOD - An input module obtains a media signal to be communicated to a destination system, after which an identification module identifies a plurality of segments within the media signal. A codec includes a selection module that automatically selects different compression methods to respectively compress at least two of the segments. The compression methods are automatically selected to produce a highest compression quality for the respective segments according to a set of criteria without exceeding a target data rate. A compression module within the codec then compresses the segments using the automatically-selected compression methods, after which an output module delivers the compressed segments to the destination system with an indication of which compression method was used to compress each segment. | 10-04-2012 |
| 20120257671 | Reduction of Latency in Video Distribution Networks Using Adaptive Bit Rates - Systems and methods are provided for reducing and controlling playback latency in an unmanaged, buffered data network. A delay cost function is determined, the function representing the effect of playback latency on end user experience. An encoder transmits audiovisual data through the network to a client device. Network latency is measured, and the delay cost function is evaluated to establish an encoding bitrate for the encoder. The encoding of the audiovisual data is altered in response to dynamic network conditions, thereby controlling end-to-end playback latency of the system, which is represented by the playout length of data buffered between the encoder and the client device. | 10-11-2012 |
| 20120263226 | SOURCE NODE AND SENDING METHOD THEREFOR - When data either uncompressed or compressed at a predetermined compression ratio and high-compression data compressed at a compression ratio higher than the predetermined compression ratio are sent through different communication paths, if an error occurs on the communication path through which the data either uncompressed or compressed at the predetermined compression ratio is being sent, the data either uncompressed or compressed at a predetermined compression ratio is sent through the communication path used to send the high-compression data up to that time. | 10-18-2012 |
| 20120263227 | METHODS AND SYSTEMS FOR ESTIMATING MOTION IN MULTIMEDIA PICTURES - Several methods and systems for estimating motion in a plurality of multimedia pictures are disclosed. In an embodiment, at least one temporal distance between a multimedia picture and one or more reference pictures corresponding to the multimedia picture in a capture order associated with the plurality of multimedia pictures is computed. The at least one temporal distance is computed subsequent to an encoding of the multimedia picture. At least one motion estimation parameter is determined based on the at least one temporal distance. Motion associated with a subsequent multimedia picture to be encoded is estimated based on the at least one motion estimation parameter. | 10-18-2012 |
| 20120263228 | PROCESSING AND MANAGING SPLICE POINTS FOR THE CONCATENATION OF TWO VIDEO STREAMS - Receiving a video stream in a transport stream comprising a plurality of compressed pictures, wherein information in the video stream includes plural data fields comprising: a first data field corresponding to a location in the video stream of a potential splice point, wherein the first data field identifies a location in the video stream after the location of the received information; a second data field corresponding to decompressed pictures yet to be output (DPYTBO) by a video decoder at the identified potential splice point (IPSP) when the video decoder decompresses the video stream, wherein the second data field is a number corresponding to the DPYTBO by the video decoder at the IPSP; and a third data field corresponding to pictures with contiguous output times (WCOT), wherein the third field corresponds to a set of pictures WCOT of the DPYTBO by the video decoder at the IPSP. | 10-18-2012 |
| 20120263229 | ADAPTIVE IMAGE ENCODING DEVICE AND METHOD - Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters. | 10-18-2012 |
| 20120269258 | RATE CONTROL WITH LOOK-AHEAD FOR VIDEO TRANSCODING - Systems and methods of transcoding video bitstreams that employ look-ahead approaches to enhance the overall perceptual quality of transcoded video information, communications, and entertainment delivered to an end user. The disclosed systems and methods of transcoding video bitstreams take into account the scene characteristics and the local coding complexity of video frames in a video sequence before performing bit allocations for the video frames, thereby significantly improving the perceptual quality of transcoded video delivered to the end user. | 10-25-2012 |
| 20120269259 | System and Method for Encoding VBR MPEG Transport Streams in a Bounded Constant Bit Rate IP Network - Various embodiments of methods and systems for buffering a video stream to smooth out the variable bit rate in an MPEG 2 transport stream to a capped bit rate, while not causing packet loss on the network, and allowing the streams to pass through a bit rate constrained IP network are disclosed. One method includes conditioning a variable bit rate video content stream such that the frames are packed back to back into a constant bit rate stream such that filler packets are not required to approximate a constant bit rate. The packed video content stream, having a constant bit rate due to portions of the frames being packed into a given transmission segment, may be transmitted across a channel in a constant bit rate network. | 10-25-2012 |
| 20120269261 | METHODS AND APPARATUSES FOR ENCODING AND DECODING IMAGE USING ADAPTIVE FILTERING - Provided are methods and apparatuses for encoding and decoding an image by using adaptive filtering. The method of encoding an image by using adaptive filtering includes: determining a filter to be applied to a reference frame used for prediction encoding of a current block to be encoded, by adaptively changing a size and filter coefficients of the filter; filtering the reference frame by using the determined filter; prediction encoding the current block by using the filtered reference frame; and outputting data of the prediction encoded current block and information about the filter. | 10-25-2012 |
| 20120275510 | SCALING SIGNAL QUALITY WITH CHANNEL QUALITY - A communication system, which may be applied to video communication, transmits a single stream that each of multiple multicast receivers decodes to a video quality commensurate with its channel quality. An advantage of one or more aspects relates to mobile receivers by avoiding the catastrophic glitches that occur today in the presence of channel variations due to mobility. | 11-01-2012 |
| 20120275511 | SYSTEM AND METHOD FOR PROVIDING CONTENT AWARE VIDEO ADAPTATION - A method and system for providing content aware media adaptation are described. Aspects of the invention adaptively down-sample a source video to optimize the encoding process of the source video. The system and method extract content characteristics from the source video by sampling the source video, and then classify the video into one or more content classes based on the extracted characteristics. The content class of the video is used to determine one or more down-sampling settings for the source video. In some aspects, the down-sampling settings are derived by sampling a plurality of videos and determining optimal transitional rates for the plurality of videos. The sampled videos may be used to generate a decision boundary to classify whether a particular video is a good candidate for spatial down-sampling. | 11-01-2012 |
| 20120275512 | METHOD, APPARATUS AND SYSTEM FOR USE IN MULTIMEDIA SIGNAL ENCODING - The present embodiments provide methods, apparatuses, systems for use in encoding and/or formatting content, such as multimedia content. Some embodiments provide methods for use in encoding content. These methods receive source content, encode the source content producing encoded content, evaluate a first encoded segment of the encoded content relative to a plurality of buffer models, determine whether the first segment of encoded content is to be re-encoded relative to one or more of the plurality of buffer models based on the evaluation; and re-encode the first segment when it is determined that the first segment is to be re encoded. | 11-01-2012 |
| 20120275513 | VIDEO ENCODING/DECODING METHOD AND DEVICE - Disclosed are a video encoding/decoding method and device. The video encoding method may comprise the steps of: establishing an adaptive filter corresponding to the current image; comparing the adaptive filter established in this way with at least one existing adaptive filter contained in a filter list; establishing whether to add the adaptive filter established in the way described to the adaptive filter list, based on the results of the comparison; and encoding the current image by using an adaptive filter contained in the filter list. In this way, encoding efficiency can be improved. | 11-01-2012 |
| 20120275514 | TREATING VIDEO INFORMATION - Systems, methods, and techniques for treating video information are described. In one implementation, a method includes receiving video information, classifying one or more frames in the received video information as a scene, adjusting one or more coding parameters based on the classification of the frames, and coding the video information in accordance with the adjusted coding parameters. | 11-01-2012 |
| 20120281749 | ENCODER, DECODER, AND DATA CONFIGURATION - A moving image encoder ( | 11-08-2012 |
| 20120281750 | METHOD AND SYSTEM FOR CODING MODE SELECTION IN VIDEO COMPRESSION SYSTEMS - A method and system are disclosed for selecting a mode to encode video data. The method comprises the steps of (a) transforming a source video frame into a set of coefficients, (b) partitioning said set of coefficients into a plurality of subsets of the coefficients on the basis of probability statistics corresponding to a plurality of encoding modes, wherein each of said subsets is identified for encoding by one of the plurality of encoding modes. The method comprises the further steps of (c) for each of the plurality of subsets of coefficients, computing defined parameters of an associated probability distribution for said subset, and (d) repeating steps (b) and (c) until a predetermined termination condition is satisfied. When this predetermined termination condition is satisfied, the subsets of coefficients, as they exist at that time, are output to a video encoder, which preferably is a Wyner-Ziv encoder. | 11-08-2012 |
| 20120281751 | Multimedia Coding and Decoding with Additional Information Capability - A multimedia coding and decoding system and method is presented that uses the specific prediction mode to signal supplemental information, e.g., metadata, while considering and providing trade offs between coding performance and metadata capacity. The prediction mode can be encoded according to a mode table that relates mode to bits and by considering coding impact. Start and stop codes can be used to signal the message, while various techniques of how to properly design the mode to bits tables are presented. | 11-08-2012 |
| 20120287986 | SYSTEM AND METHOD FOR PROVIDING ADAPTIVE MEDIA OPTIMIZATION - A method and system for providing adaptive media optimization are described. Aspects of the invention modify video encoding and network transmission settings to optimize the user viewing experience. The system and method sample video content to determine various content features of the video. The system and method use the identified content features in conjunction with network statistics to modify encoding settings and network transmission options to ensure a minimum of interruption in the transmitted video. Previously generated lookup tables ensure efficient mapping of video content and network conditions to encoding and transmission settings. | 11-15-2012 |
| 20120287987 | Coding of Scene Changes Using Picture Dropping - A method for encoding a video sequence in a video encoder to generate a compressed bit stream is provided that includes coding a picture in the video sequence, detecting a scene change in the picture, and responsive to detecting the scene change, dropping the picture, signaling repetition of another picture in the compressed bit stream, and intra-coding a subsequent picture in the video sequence. | 11-15-2012 |
| 20120287988 | OFFSET TYPE AND COEFFICIENTS SIGNALING METHOD FOR SAMPLE ADAPTIVE OFFSET - This disclosure describes techniques for performing sample adaptive offset signaling and coding in a video coding process. Techniques of the disclosure include both a merge-based and prediction-based signaling process for sample adaptive offset information (i.e., offset values and offset type). The techniques includes determining offset information for a current partition, comparing the offset information of the current partition with offset information of one or more neighbor partitions, coding a merge instruction in the case that the offset information of one of the one or more neighbor partitions is the same as the offset information of the current partition, and coding one of a plurality of prediction instructions in the case that the offset information of the one or more neighbor partitions is not the same as the offset information of the current partition. | 11-15-2012 |
| 20120294353 | Apparatus and Method of Sample Adaptive Offset for Luma and Chroma Components - A method and apparatus for processing reconstructed video using in-loop filter in a video coding system are disclosed. The method uses chroma in-loop filter indication to indicate whether chroma components are processed by in-loop filter when the luma in-loop filter indication indicates that in-loop filter processing is applied to the luma component. An additional flag may be used to indicate whether the in-loop filter processing is applied to an entire picture using same in-loop filter information or each block of the picture using individual in-loop filter information. Various embodiments according to the present invention to increase efficiency are disclosed, wherein various aspects of in-loop filter information are taken into consideration for efficient coding such as the property of quadtree-based partition, boundary conditions of a block, in-loop filter information sharing between luma and chroma components, indexing to a set of in-loop filter information, and prediction of in-loop filter information. | 11-22-2012 |
| 20120294354 | CODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, RECORDING MEDIUM, AND PROGRAM - An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information. | 11-22-2012 |
| 20120300834 | Method and System for Efficient Video Transcoding Using Coding Modes, Motion Vectors and Residual Information - An improved MPEG-4 to H.264 transcoding algorithm is provided, exploiting residual, coding mode and motion vector information from the MPEG-4 stream. The use of the relative sum of absolute residuals (RSAR) to classify macroblocks (MB) leads to small sets of coding modes (CM) to test, and significantly reduces the computational complexity. In addition, RSAR is used to conditionally refine motion vectors (MV); only those MVs most likely to lead to quality improvements are refined. The average RSAR statistics are obtained from the transcoding of the previous Inter frame to provide adaptive thresholds for coding mode selection as well as conditional MV refinement. A corresponding video transcoder system is also provided. | 11-29-2012 |
| 20120307884 | Selective intra and/or inter prediction video encoding - Selective intra and/or inter-prediction video encoding. Based upon anticipation of a future communication channel rate (e.g., actual physical layer channel rate) or video data rate of a communication channel, a given prediction mode for video encoding may be adaptively selected. Prediction of a future or expected value corresponding to at least one parameter associated with the communication channel (e.g., channel rate, video data rate, etc.) can drive operational mode selection/adaptation in accordance with video coding. Alternatively, one or more actual measured values corresponding to at least one parameter can drive operational mode selection/adaptation in accordance with video coding. In some instances, neither intra-prediction nor inter-prediction is performed in accordance with a non-feedback operational mode, and an input video signal undergoes compression (e.g., without intra-prediction and/or inter-prediction). Transitioning between various video coding operational modes may be made in different manners and based on different criteria as desired in various given applications. | 12-06-2012 |
| 20120307885 | Channel Condition Prediction Employing Transmit Queuing Model - Channel condition prediction employing a transmit queuing model. An average transmission queue delay monitor generates an indication of average transmit queue latency during the transmission of a video stream to a remote wireless device. The average transmit queue latency is compared to a predetermined threshold for purposes of adjusting encoding bit rate (or other encoding parameter) of the video stream. In one mode, the predetermined threshold reflects a maximum tolerable average queue depth beyond which video data is likely to be lost or unacceptably delayed under certain channel conditions. If the average transmit queue latency exceeds the predetermined threshold, the encoding bit rate (or related encoding parameter) is lowered or raised as necessary to decrease or increase the transmit queue depth to a desired level. In another mode, the transmit queuing model is used in conjunction with channel throughput estimation information to adaptively adjust one or more encoding parameters. | 12-06-2012 |
| 20120307886 | Adaptive Video Encoding Based on Predicted Wireless Channel Conditions - Adaptive video encoding based on predicted wireless channel conditions. Based on at least one of a number of transmitter side indications of the available throughput of a wireless channel for video delivery, an encoder rate adaptation mechanism generates an estimate of the supportable throughput of the wireless channel under different operating conditions. An encoding parameter, such as encoder bit rate, is subsequently altered based on the estimated throughput value. In one instance, transmitter side throughput indicia is used to generate target encoder bit rates for multiple potential PHY data rates/channel MCS selections that may be used in video delivery. In anticipation of or immediately following a transition to one such PHY data rate/MCS selection, the encoder bit rate is altered in accordance with an associated target bit rate. In another mode, average transmit queue latency information is used to further regulate the encoder bit rate. | 12-06-2012 |
| 20120307887 | HINT BASED ADAPTIVE ENCODING - A device for encoding video image data includes a data receiver that receives a current image frame to be compressed, the current image frame being composed of a plurality of current macroblocks. An information receiver receives metadata that includes information that identifies static areas within the received current image frame. An encoder encodes each of the plurality of current macroblocks. The encoder encodes a current macroblock that is entirely within the static areas as having no difference from a corresponding preceding macroblock in a preceding frame by using an encoded macroblock that is created without comparing the current macroblock to the corresponding preceding macroblock. The metadata may include information that identifies regular video and graphics within the received current image frame and the encoder may make different compression decisions according to the inclusion of regular video and graphics within the current macroblock. | 12-06-2012 |
| 20120307888 | RUN-MODE BASED COEFFICIENT CODING FOR VIDEO CODING - A video coding device is configured to code coefficients of residual blocks of video data. When a coefficient of a transform unit of video data has a scan order value that is less than a threshold and when the coefficient is the last significant coefficient in a scan order in the transform unit, the video coding device may execute a function to determine a mapping between data for the coefficient and a codeword index value, and code the data for the coefficient using a codeword associated with the codeword index value. The video coding device may comprise a video encoder or a video decoder, in some examples. | 12-06-2012 |
| 20120314759 | VIDEO TRANSMITTING METHOD AND SYSTEM WITH IMAGE QUALITY ADJUSTING FUNCTION - A video transmitting method with an image quality adjusting function is provided. In the method, a video stream is transmitted to a receiving terminal. A received number of frames of the video stream received by the receiving terminal in a preset period is obtained. An image quality of the video stream is adjusted according to the received number of frames. | 12-13-2012 |
| 20120314760 | METHOD AND SYSTEM TO REDUCE MODELLING OVERHEAD FOR DATA COMPRESSION - A method for decoding compressed data that has been encoded using a context model, each context having a context state corresponding to a probability estimate. Each bin of the data has been encoded using the probability estimate corresponding to the context state for the context associated with that bin. At the decoder, for decoding a series of bins associated with a given context, an initial probability estimate is determined using an initial context state for the given context and the series of bins are decoded and reconstructed using that initial probability estimate. After the series is decoded, the context state is updated based on the reconstructed bins for the series to produce an updated context state for that context to be used in decoding a subsequence portion of the bitstream. | 12-13-2012 |
| 20120314761 | ADAPTIVE BITRATE MANAGEMENT ON PROGRESSIVE DOWNLOAD WITH INDEXED MEDIA FILES - A method includes receiving streaming media data having an original media frame and an original frame index referencing the original media frame; determining an optimal session bitrate, wherein the optimal session bitrate is based on the available network bandwidth between a server and a terminal; allocating a frame budget for an output media frame by estimating a frame size of the output media frame based on the original frame index and the optimal session bitrate; generating the output media frame by processing the original media frame based on first encoding parameters and, if the allocated frame budget is greater than a frame size of the processed media frame, padding the processed media frame; and providing the output media frame. | 12-13-2012 |
| 20120314762 | TRANSMISSION METHOD, RECEPTION METHOD, TRANSMISSION APPARATUS, AND RECEPTION APPARATUS - The present invention relates to transmission and reception of digital broadcast in a digital broadcast network supporting a configuration of multiple physical layer pipes (PLPs). In particular, signalling parameters relating to a complete PLP are transmitted within layer | 12-13-2012 |
| 20120314763 | Methods And Systems For Providing Bandwidth Adjustment - Systems and methods are disclosed for providing bandwidth adjustment. The disclosed systems and methods may include receiving an input signal having at least one attribute and an input bandwidth. Furthermore, the disclosed systems and methods may include producing a first adjusted signal. The first adjusted signal may comprise the input signal with a first adjusted bandwidth. The first adjusted bandwidth may comprise the input bandwidth adjusted based on the at least one attribute and at least one first preference. In addition, the disclosed systems and methods may include providing the first adjusted signal to a first end use device. | 12-13-2012 |
| 20120320966 | ADAPTIVE VIDEO DECODING CIRCUITRY AND TECHNIQUES - A method and circuitry for decoding an encoded video data stream which corresponds to a selected channel which is one of a plurality of channels of a broadcast spectrum. In one aspect, the method comprises determining one or more characteristics of the encoded video data stream, decoding the encoded video data stream to generate video data, wherein: (i) in response to determining the encoded video data stream includes a first characteristic, the encoded video data stream is decoded using a first decoding mode wherein, in response to decoding the encoded video data stream using the first decoding mode, the video data includes a first spatial resolution and a first temporal resolution, and (ii) in response to determining the encoded video data stream includes a second characteristic, the encoded video data stream is decoded using a second decoding mode wherein, in response to decoding the encoded video data stream using the second decoding mode, the video data includes a second spatial resolution and a second temporal resolution, wherein the first spatial resolution is different from the second spatial resolution and/or the first temporal resolution is different from the second temporal resolution. | 12-20-2012 |
| 20120320967 | ADAPTIVE CODEC SELECTION - Disclosed herein are tools and techniques for storing and using video processing tool configuration information that can identify combinations of video processing tools to be used for processing video. In one exemplary embodiment, video processing tools of a computing system are identified. The performance of a combination of the video processing tools is measured. The performance measurement is compared with another performance measurement of another combination of the video processing tools. Based on the comparison, video processing tool configuration information is set. In another exemplary embodiment, video processing tool configuration information indicating a combination of video processing tools is accessed, and video data is processed using the combination of video processing tools based on the video processing tool configuration information. | 12-20-2012 |
| 20120320968 | UNIFIED MERGE MODE AND ADAPTIVE MOTION VECTOR PREDICTION MODE CANDIDATES SELECTION - A unified candidate block set for both adaptive motion vector prediction (AMVP) mode and merge mode for use in inter-prediction is proposed. In general, the same candidate block set is used regardless of which motion vector prediction mode (e.g., merge mode or AMVP mode) is used. In other examples of this disclosure, one candidate block in a set of candidate blocks is designated as an additional candidate block. The additional candidate block is used if one of the other candidate blocks is unavailable. Also, the disclosure proposes a checking pattern where the left candidate block is checked before the below left candidate block. Also, the above candidate block is checked before the right above candidate block. | 12-20-2012 |
| 20120320969 | UNIFIED MERGE MODE AND ADAPTIVE MOTION VECTOR PREDICTION MODE CANDIDATES SELECTION - A unified candidate block set for both adaptive motion vector prediction (AMVP) mode and merge mode for use in inter-prediction is proposed. In general, the same candidate block set is used regardless of which motion vector prediction mode (e.g., merge mode or AMVP mode) is used. In other examples of this disclosure, one candidate block in a set of candidate blocks is designated as an additional candidate block. The additional candidate block is used if one of the other candidate blocks is unavailable. Also, the disclosure proposes a checking pattern where the left candidate block is checked before the below left candidate block. Also, the above candidate block is checked before the right above candidate block. | 12-20-2012 |
| 20120320970 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method according to an aspect of the present invention includes: extracting a size of an image from the bitstream; extracting a size of a smallest coding unit from the bitstream; judging whether or not the size of the image is an integral multiple of the size of the smallest coding unit; and decoding a coded image signal included in the bitstream, using the size of the image, when the size of the image is an integral multiple of the size of the smallest coding unit, to generate a first decoded image. | 12-20-2012 |
| 20120327997 | Video Coding - A video coding method includes for each target image portion to be encoded, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion and a measure of bit rate required to encode the target image portion, the encoding modes comprising at least an intra frame mode and an inter frame mode; and transmitting the encoded video stream over a lossy channel. The estimate of distortion is based on a contribution from possible new loss over the channel comprising possible loss of the target block, and on a contribution from possible past loss over the channel comprising possible loss in a history of the encoded video stream upon which decoding of the target portion depends. The method includes accumulating the contribution from past loss over time, such that the estimate of distortion grows irrespective of the contribution from new loss. | 12-27-2012 |
| 20120327998 | Video Coding - A method of encoding an outgoing video stream comprising a plurality of frames, each frame comprising a plurality of image portions, the method including for each target image portion to be encoded, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion and a measure of bit rate required to encode the target image portion; encoding the target image portion into the outgoing video stream using the selected encoding mode; and transmitting the encoded outgoing video stream over a lossy channel. The estimate of distortion comprises a first term representing source coding distortion, and a bias term representing an estimate of distortion that would be experienced due to loss over said channel. The bias term is determined based on a trained parameter trained based on a sample video stream. | 12-27-2012 |
| 20120327999 | Encoding mode values representing prediction modes - A method of encoding a mode value representing a prediction mode comprises selecting from among at least first and second encoding processes an encoding process to apply to the mode value to be encoded. The first encoding process comprises encoding first information indicating a predetermined relationship between the mode value to be encoded and at least one predetermined value. The second encoding process comprises encoding second information representing the mode value to be encoded. The encoding by the second encoding process takes account of the outcome of at least one prior first encoding process. This can be achieved by updating mode probabilities based on the outcome of the first, as well as the second, encoding process. Such a method creates a link between the first and second encoding processes and can improve coding efficiency. | 12-27-2012 |
| 20130003823 | SYSTEM FOR INITIALIZING AN ARITHMETIC CODER - Decoding a slice using a context based adaptively binary arithmetic coding, based upon a pair of variables n and m, corresponding to a probability state index and the value of the most probable symbol. | 01-03-2013 |
| 20130010858 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - When controlling transmission channel parameters and video encoding parameters so as to be linked to each other in video transmission, the video quality on the receiving side is further improved. As a parameter control unit that controls video encoding parameters regarding video encoding in a video encoding unit and transmission channel parameters regarding error correction coding and modulation in a channel coding/modulation unit so as to be linked to each other, a cross layer rate control unit is provided. The cross layer rate control unit performs variable control of the GOP size according to propagation changes by reducing the GOP size when the predicted value of the PHY transmission rate is larger than a determined reference value and increasing the GOP size when the predicted value of the PHY transmission rate is equal to or less than the determined reference value. | 01-10-2013 |
| 20130016768 | METHODS AND APPARATUS FOR EFFICIENT ADAPTIVE FILTERING FOR VIDEO ENCODERS AND DECODERS - Methods and apparatus are provided for efficient adaptive filtering for video encoders and decoders. An apparatus includes a video encoder for encoding picture data for at least a portion of a picture using adaptive filtering. The video encoder includes an adaptive filter for performing the adaptive filtering. A final filter coefficient set used for the adaptive filtering is determined by iteratively estimating a plurality of filter coefficient sets and selecting a last estimated one of the plurality of filter coefficient sets as the final filter coefficient set when a last iteration corresponding to the last estimated one of the plurality of filter coefficient sets results in a quality improvement above a threshold value for the portion. | 01-17-2013 |
| 20130016769 | SIGNALING PICTURE SIZE IN VIDEO CODING - A video encoder is configured to determine a picture size for one or more pictures included in a video sequence. The picture size associated with the video sequence may be a multiple of an aligned coding unit size for the video sequence. In one example, the aligned coding unit size for the video sequence may comprise a minimum coding unit size where the minimum coding unit size is selected from a plurality of smallest coding unit sizes corresponding to different pictures in the video sequence. A video decoder is configured to obtain syntax elements to determine the picture size and the aligned coding unit size for the video sequence. The video decoder decodes the pictures included in the video sequence with the picture size, and stores the decoded pictures in a decoded picture buffer. | 01-17-2013 |
| 20130016770 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHODAANM Kishigami; TakaakiAACI TokyoAACO JPAAGP Kishigami; Takaaki Tokyo JPAANM Imamura; DaichiAACI KanagawaAACO JPAAGP Imamura; Daichi Kanagawa JPAANM Yoshii; IsamuAACI KanagawaAACO JPAAGP Yoshii; Isamu Kanagawa JP - As a parameter control unit that controls video encoding parameters regarding video encoding in a video encoding unit and transmission channel parameters regarding error correction coding and modulation in a channel coding/modulation unit so as to be linked to each other, a cross layer rate control unit is provided. The cross layer rate control unit performs variable control of the GOP size according to propagation changes by reducing the GOP size when the amount of change in the predicted value of the PHY transmission rate is larger than a determined amount of change and increasing the GOP size when the amount of change in the predicted value of the PHY transmission rate is equal to or less than the determined amount of change. | 01-17-2013 |
| 20130022101 | Adaptable Video Architectures - Various methods and systems are provided for adaptable video architectures. In one embodiment, a method for adapting video processing of a video device includes processing a video stream along a first pipeline pathway defined by a plurality of interconnected pipeline elements. In response to detecting a change in a system condition of the video device, the pipeline pathway is transitioned to a second pipeline pathway by reconfiguring at least one of the pipeline element interconnections. In another embodiment, a method includes obtaining a video stream. A first subset bitstream having a first resolution is processed in a video pipeline of a video device and video information is extracted from the video pipeline during the processing. At least a portion of the extracted video information is then to a video pipeline of the video device for processing a second subset bitstream having a second resolution higher than the first resolution. | 01-24-2013 |
| 20130022102 | Systems and Methods with Early Variance Measure Used to Optimize Video Encoding - Methods and systems for video encoding, using a variance measure to directly effect efficiencies and optimizations at various stages of video encoding to improve compute cycle, power, heat and bandwidth efficiency and decoded picture quality and decrease the bit length of encoded frames. Download rate and decoding efficiency are also improved as a result of the improvements realized at the encoder. | 01-24-2013 |
| 20130022103 | METHOD AND APPARATUS FOR SAMPLE ADAPTIVE OFFSET PARAMETER ESTIMATIONFOR IMAGE AND VIDEO CODING - A method and apparatus for decoding video. The method includes determining a sample adaptive offset edge type of at least a portion of the image, determining a boundary edge type of the at least a portion of the image, modifying the sample adaptive offset edge type of the at least a portion of the image according to the determined edge type of the at least a portion of the image, selecting a sample adaptive offset type according to at least one of the determined sample adaptive offset edge type or the modified sample adaptive offset edge type, and filtering at least a portion of the image utilizing the selected filter type. | 01-24-2013 |
| 20130022104 | ADAPTATION PARAMETER SETS FOR VIDEO CODING - In one example, a video decoder is configured to store an adaptation parameter set (APS) data structure in a buffer of a coding device, wherein the APS data structure includes signaling data applicable to one or more slices of video data, decode at least one of the slices based on the signaling data of the APS data structure, after decoding the slice, determine that the APS data structure can be removed from the buffer, remove the APS data structure from the buffer based on the determination, and decode one or more additional slices of the video data after removing the APS data structure from the buffer. | 01-24-2013 |
| 20130022105 | Video Decoding System Supporting Multiple Standards - System and method for decoding digital video data. The decoding system employs hardware accelerators that assist a core processor in performing selected decoding tasks. The hardware accelerators are configurable to support a plurality of existing and future encoding/decoding formats. The accelerators are configurable to support substantially any existing or future encoding/decoding formats that fall into the general class of DCT-based, entropy decoded, block-motion-compensated compression algorithms. The hardware accelerators illustratively comprise a programmable entropy decoder, an inverse quantization module, a inverse discrete cosine transform module, a pixel filter, a motion compensation module and a de-blocking filter. The hardware accelerators function in a decoding pipeline wherein at any given stage in the pipeline, while a given function is being performed on a given macroblock, the next macroblock in the data stream is being worked on by the previous function in the pipeline. | 01-24-2013 |
| 20130034148 | Unified binarization for CABAC/CAVLC entropy coding - Unified binarization for CABAC/CAVLC entropy coding. Scalable entropy coding is implemented in accordance with any desired degree of complexity (e.g., entropy encoding and/or decoding). For example, appropriately implemented context-adaptive variable-length coding (CAVLC) and context-adaptive binary arithmetic coding (CABAC) allow for selective entropy coding in accordance with a number of different degrees of complexity. A given device may operate in accordance with a first level complexity a first time, a second level complexity of the second time, and so on. Appropriate coordination and signaling between an encoder/transmitter device and a decoder/receiver device allows for appropriate coordination along a desired degree of complexity. For example, a variable length binarization module and an arithmetic encoding module may be implemented within an encoder/transmitter device and a corresponding arithmetic decoding module and a variable length bin decoding module may be implemented within a decoder/receiver device allowing for entropy coding along various degrees of complexity. | 02-07-2013 |
| 20130039409 | SYSTEM AND METHOD FOR VIRTUALIZATION OF AMBIENT ENVIRONMENTS IN LIVE VIDEO STREAMING - A system and method for virtualization of ambient environments in live video streaming are disclosed. In one embodiment, motion detection is performed to obtain motion information in a current frame in a live video stream. Further, a background model is computed using the motion information. Furthermore, background subtraction is performed using the background model to obtain foreground and background pixels for the current frame in the live video stream. In addition, the obtained foreground and background pixels are refined. Based on the obtained refined foreground and background pixels, a virtualized environment is generated for the current frame by substituting the background pixels. Moreover, the steps of pre-processing, performing, computing, refining, generating and encoding are repeated for a next frame in the live video stream. | 02-14-2013 |
| 20130039410 | METHODS AND SYSTEMS FOR ADAPTING ERROR CORRECTING CODES - Methods for adapting the sliding window of sliding window-based error correcting codes based on the coding structure of a compressed media stream are disclosed. In one aspect, a sender packetizes each frame of a media stream to be sent to a receiver into a set of frame packets. The sender also determines compression dependence of each frame and adapts a sliding window of a sliding window-based error correcting code based on the compression dependence of the frame. The sender encodes the frame packets into at least one associated parity packet according to the error correcting code with the adapted sliding window, and sends the frame packets and the at least one associated parity packet to the receiver. | 02-14-2013 |
| 20130044803 | INSTANTANEOUS DECODER REFRESH FRAME ALIGNED MULTI-BITRATE TRANSCODER OUTPUT - A video stream is transcoded to provide a plurality of primary profiles. Individual frames of the video stream have a Presentation Time Stamp (PTS). A PTS is used as a token to identify particular frames to be encoded as Instantaneous Decoder Refresh (IDR) frames in each profile. An IDR frame period is determined, indicative of a desired number of video frames between two IDR frames. An IDR frame is inserted into each profile every IDR frame period. The IDR frames of each profile are aligned with the same IDR frames of the other profiles. The PTS of each IDR frame in each profile is monitored. Upon determining that a PTS is out of alignment, the next PTS of the affected profile is aligned with the corresponding PTS of remaining profiles. Backup transcoders produce backup profiles that are maintained in alignment with each other and with the primary profiles. | 02-21-2013 |
| 20130044804 | Video Coding - A method comprising: for each target image portion to be encoded in a frame, selecting one of a set of encoding modes by optimizing a function comprising an estimate of distortion for the target image portion and a measure of bit rate required to encode the target image portion, encoding the target image portion into the encoded video stream using the selected mode. The encoded video stream is transmitted over a lossy channel. An error propagation distortion map is maintained, which comprises a plurality of error propagation distortion values mapping to respective frame partitions, the error propagation distortion values being based on previous encoding mode selections. The estimate of distortion used to select the encoding mode for each of the target image portions is based on a corresponding portion from the error propagation distortion map, and that corresponding portion is constrained to being co-located with the target image portion. | 02-21-2013 |
| 20130044805 | SCRIPT-BASED VIDEO RENDERING - Systems and methods are provided for cross-platform rendering of video content on a plurality of different user-computing platform types. A script is transmitted to the user-computing platform and is interpreted by an application program to: decode a first type of encoded video data into first decoded video data; render the first decoded video data; determine a rate at which the first type of encoded video data is being received; and, in dependence on the determined rate, to perform at least one of: transmitting a request to receive a second type of encoded video data; modifying a characteristic of the decoding of the first type of encoded video data; and modifying a characteristic of the rendering of the first decoded video data. | 02-21-2013 |
| 20130044806 | METHOD FOR PERFORMING PARALLEL CODING WITH ORDERED ENTROPY SLICES, AND ASSOCIATED APPARATUS - A method for performing parallel coding with ordered entropy slices includes: providing a plurality of entropy slices to a plurality of processing elements, wherein each entropy slice includes a plurality of blocks; initializing CABAC states of a current entropy slice as the CABAC states of a previous entropy slice after processing D | 02-21-2013 |
| 20130051454 | Sample Adaptive Offset (SAO) Parameter Signaling - A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol. | 02-28-2013 |
| 20130051455 | Flexible Region Based Sample Adaptive Offset (SAO) and Adaptive Loop Filter (ALF) - A method for in-loop filtering in a video encoder is provided that includes determining filter parameters for each filtering region of a plurality of filtering regions of a reconstructed picture, applying in-loop filtering to each filtering region according to the filter parameters determined for the filtering region, and signaling the filter parameters for each filtering region in an encoded video bit stream, wherein the filter parameters for each filtering region are signaled after encoded data of a final largest coding unit (LCU) in the filtering region, wherein the in-loop filtering is selected from a group consisting of adaptive loop filtering and sample adaptive offset filtering. | 02-28-2013 |
| 20130051456 | VIDEO ENCODING CONTROL METHOD, VIDEO ENCODING APPARATUS AND VIDEO ENCODING PROGRAM - In a video encoding control method of the present invention, each picture is encoded in units of encoding-order picture groups such as GOPs, and when CPB underflow has occurred, an encoding parameter such as a quantization parameter and filter strength of a pre-filter is changed in such a manner that a generated bit rate is reduced, and an encoding-order picture group that is being encoded is re-encoded from its first picture using the changed encoding parameter. | 02-28-2013 |
| 20130058394 | Video Coding - A method comprising: encoding a video image at each of a plurality of frames, including by using inter frame encoding to encode at least portions of some of the frames, thereby generating an encoded video stream; transmitting the encoded video stream over a lossy channel to be decoded at a receiver to produce decoded video; and performing a recovery operation to refresh the encoding of the video image, cutting off error propagation that has occurred in the decoded video due to an effect of inter prediction in presence of loss over said channel; wherein the recovery operation is triggered by a report fed back from the receiver indicative of loss; and wherein the recovery operation is performed over a plural number of frames, refreshing the encoding of different partial frame regions at different respective frames. | 03-07-2013 |
| 20130058395 | Video Coding - A method of performing a rate-distortion optimization process comprising selecting a preferred encoding mode by optimizing a function comprising an estimate of distortion for a target image portion and a measure of bit rate required to encode that portion. The estimate of distortion is based on source coding distortion and an estimate of error propagation distortion due to loss. The method further comprises transmitting the same encoded version of the video stream from the transmitting terminal to each of a plurality of receiving terminals over respective lossy channels, using the same rate-distortion optimization process in relation to each of the plurality of receiving terminals, making the same encoding mode selection per target image portion based on the same optimization of said function. The estimate of error propagation distortion comprises an aggregate estimate of error propagation distortion that would be experienced due to possible loss over the plurality of channels. | 03-07-2013 |
| 20130058396 | VIDEO ENCODING CONTROL METHOD AND APPARATUS - A video encoding control method for controlling encoding of an input video signal. The method includes the steps of detecting an underflow of a decoder buffer; if the underflow of the decoder buffer has been detected, suppressing an amount of generated code by skipping an encoding target picture or by encoding the encoding target picture so as to produce a minimum amount of generated code; after suppressing the amount of generated code, comparing a current rate of occupancy in the decoder buffer with a predetermined threshold for the rate of occupancy in the decoder buffer; and performing a control for continuously suppressing the amount of code generated for each encoding target image by using the above step of suppressing the amount of generated code until the rate of occupancy in the decoder buffer exceeds the threshold based on a result of the above comparison. | 03-07-2013 |
| 20130058397 | APPARATUS AND METHOD FOR CONSTRUCTING AND INDEXING A REFERENCE IMAGE - An apparatus for configuring and indexing a reference image for estimating motion vector includes: a reference image configuring unit for processing the reference image in a variety of arbitrary different methods and arranging reference frames according to processing methods; and an index assignment unit for assigning reference frame indexes according to the method processed by the reference image configuring unit. | 03-07-2013 |
| 20130064285 | DISTRIBUTED SCALABLE ENCODER RESOURCES FOR LIVE STREAMS - Live media streams are delineated for distributed encoding and fragmentation in a dynamically scalable distributed resource system. In some examples, live MPEG-2 media streams are separated into groups of pictures (GOPs) and converted into jobs for encoding and fragmentation systems. Multiple jobs may be created for the same live media stream to provide for different quality levels for each fragment of each channel. Shared resources such as a pool of dynamically scalable virtual machines can be used to process the individual jobs. Encoded fragments may be H.264 fragments maintained on shared storage. A particular live stream corresponding to a particular quality level can be reconstructed using the encoded fragments. | 03-14-2013 |
| 20130064286 | WEIGHTED ENCODER FRAGMENT SCHEDULING - Live media streams are encoded and fragmented to generate encoded fragments appropriate for different devices and networks. Different encoded fragments may correspond to different resolutions, audio bit rates, quality levels, and even codecs, etc. Devices request encoded fragments as needed to reconstitute a live media stream for playback. In many instances, encoding and fragmentation jobs are provided to numerous distributed and scalable encoder and fragmenter systems. Encoding and fragmentation jobs are intelligently weighted and scheduled to prevent any disruption or delay in playback of any particular live stream. | 03-14-2013 |
| 20130064287 | MANAGEMENT OF RESOURCES FOR LIVE STREAM VARIANT PROCESSING - Live media streams variants are encoded in real-time in a dynamically scalable distributed resource system. In some examples, each live MPEG- | 03-14-2013 |
| 20130064288 | SECURED CONTENT DISTRIBUTION - The illustrative embodiments described herein provide a computer implemented method for encoding electronic media. An encoding process of the electronic media is initiated at an initial bit rate. The initial bit rate is increased to a baseline bit rate over a predetermined period of time. The baseline bit rate is varied in response to at least one of a density of detail, a delta pixel threshold, and a predominant color. | 03-14-2013 |
| 20130070839 | STATISTICAL MULTIPLEXING OF STREAMING MEDIA - A method for delivering streaming media content to client devices over a network includes receiving a plurality of media streams encoded at different bit rates. The media streams for each service contains common content to be received by one or more of the client devices. Each includes a plurality of segments having a prescribed duration. For each service a need parameter is obtained for each segment. Each need parameter reflects a bit rate needed to transmit over the network the respective segment of the media streams for that service at a given quality level. One of the media streams for each service is selected by allocating bandwidth to the media streams based at least on the need parameters for each corresponding segment of the media streams. The selected media streams are multiplexed to form a multiplexed stream. The multiplexed stream is adaptively streamed over the network to client devices. | 03-21-2013 |
| 20130070841 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; writing, into the sequence parameter set, reference list description defining information for defining a plurality of reference list descriptions corresponding to the buffer descriptions; and writing, into a first header of each processing unit which is included in a coded bitstream, buffer description selecting information for specifying a selected buffer description. | 03-21-2013 |
| 20130070842 | METHOD AND SYSTEM FOR USING MOTION PREDICTION TO EQUALIZE VIDEO QUALITY ACROSS INTRA-CODED FRAMES - In a video processing system, a method and system for using motion estimation to equalize video quality across intra frames are provided. Inter-prediction processing may be enabled for macroblocks in an “I” frame to generate temporal statistics. The inter-prediction processing may comprise motion estimation and motion compensation. Spatial statistics may be generated from the macroblocks in the “I” frame. A rate control may be determined based on the inter-prediction processing and spatial statistics. | 03-21-2013 |
| 20130070843 | ADAPTIVE COEFFICIENT SCAN ORDER - A digital media codec adaptively re-arranges a coefficient scan order of transform coefficients in accordance with the local statistics of the digital media, so that the coefficients can be encoded more efficiently using entropy encoding. The adaptive scan ordering is applied causally at encoding and decoding to avoid explicitly signaling the scan order to the decoder in the compressed digital media stream. For computational efficiency, the adaptive scan order re-arranges the scan order by applying a conditional exchange operation on adjacently ordered coefficient locations via a single traversal of the scan order per update of the statistical analysis. | 03-21-2013 |
| 20130077671 | ENCODING APPARATUS AND ENCODING METHOD - The present invention relates to an encoding apparatus and an encoding method capable of reducing the overhead on a macroblock basis. A number of reference image decision unit | 03-28-2013 |
| 20130077672 | IMAGE PROCESSING APPARATUS AND METHOD - The disclosure relates to an image processing apparatus and method that can improve encoding efficiency. The image processing apparatus includes: an intra prediction unit that performs intra prediction by using a plurality of prediction modes and selects an optimum prediction mode, based on an obtained result of prediction; an updating unit that updates allocation of code number for the respective prediction modes of the intra prediction performed by the intra prediction unit such that a smaller value is allocated to a prediction mode with a higher frequency of occurrence; and an encoding unit that encodes a code number allocated to the prediction mode of the intra prediction, executed by the intra prediction unit, the code number being allocation according to the updated code number allocation. The technology is applicable to, for example, an image processing apparatus. | 03-28-2013 |
| 20130083839 | Video coding tree sub-block splitting - Video coding tree sub-block splitting. A parser and treeblock splitter is implemented for adaptive partitioning of treeblocks (TBs) into various respective sub-treeblocks (STBs). Such adaptation may be tailored for effectuating parallel processing in accordance with video decoding. Different respective decoding engines may each individually and respectively also perform further partitioning of the STBs into sub-STBs as well. Such adaptation of respective STB size and/or sub-STB size may be made based on local and/or remote consideration(s). For example, adaptation may be made based upon communication link and/or channel conditions, a remote characteristic (e.g., associated with a source device and/or destination device), a local characteristic (e.g., associated with operations and/or processing performed locally within a given device), and/or any other type of consideration. Different respective portions of a video signal may be processed using different respective sized STBs/sub-STBs (and different respective engines may also employ different respective sized STBs/sub-STBs). | 04-04-2013 |
| 20130083840 | Advance encode processing based on raw video data - Advance encode processing based on raw video data. Adaptive processing of a video signal may be made by making one or more decisions and/or directing one or more encoding steps based upon characteristic(s) associated with the video signal in raw form (e.g., before the video signal undergoing any processing in accordance with generating an output video bitstream). Characteristic(s) associated with the video signal (raw form) may be used to drive intra-prediction angular mode selection, including making a preliminary/coarse angular mode selection (e.g., which may be refined and/or modified based upon partial and/or full processing of the video signal). Characteristic(s) associated with the video signal (raw form) may be used to drive intra-prediction/inter-prediction operational mode selection (or intra-prediction/inter-prediction/neither operational mode selection). An integrated and/or embedded video decoder within a video encoding device may be provisioned to assist in adaptation of one or more of the video encoding operations. | 04-04-2013 |
| 20130083841 | Video coding infrastructure using adaptive prediction complexity reduction - Video coding infrastructure using adaptive prediction complexity reduction. One or more subsets associated with one or more frames or pictures of the video signal may be adaptively selected and used for motion vector calculation (e.g., such as in accordance with inter-prediction). For example, a picture or frame of the video signal may be partitioned into a number of respective regions. Any one or more, but typically fewer than all, of the respective regions may be appropriately selected, and stored, based on any one or more considerations for use in motion vector calculation (e.g., inter-prediction). A sub-sampled or down-sampled picture or frame [or alternatively, a sub-sampled or down-sampled version of one or more respective regions of a picture or frame] (e.g., the sub-sampling or down-sampling ratio which may be adaptively determined based on any one or more considerations) may be stored for use in motion vector calculation (e.g., inter-prediction). | 04-04-2013 |
| 20130083842 | Video coding sub-block sizing based on infrastructure capabilities and current conditions - Video coding sub-block sizing based on infrastructure capabilities and current conditions. Sub-block size, such as employed in accordance with the video processing, maybe adaptively modified based on any of a number of considerations. For example, such adaptation of sub-block size may be made with respect to one or more characteristics associated with streaming media source flow(s) and/or streaming media delivery flow(s) being received by and/or output from a given device including a video processor. For example, such a video processor may be a video decoder implemented within a middling or destination device. Such a video processor may be a video encoder implemented within the middling or source device. Adaptation of sub-block size employed in accordance with video coding may also be effectuated in accordance with feedback or control signaling provided between respective devices. (e.g., from destination or source device to middling device, or from destination device to source device, etc.). | 04-04-2013 |
| 20130083843 | ADAPTABLE MEDIA PROCESSING ARCHITECTURES - Various methods and systems are provided for adaptable media processing architectures. In one example, among others, an adaptable coding architecture for servicing media streams includes media processing resources and a controller that supports a first media stream by placing media processing pipeline resources in a single stream configuration and that causes a transition from the single stream configuration to a multiple stream configuration of the media processing resources. For example, the transition may be made to simultaneously support encoding or decoding another media stream. In another example, a device includes media processing resources and a controller that causes an adaptive reconfiguration of media processing resources to support simultaneous coding related processing of both a new media stream and at least one ongoing media stream, which may cause a reallocation of at least a part of the media processing resources from an ongoing media stream to the new media stream. | 04-04-2013 |
| 20130083844 | COEFFICIENT CODING FOR SAMPLE ADAPTIVE OFFSET AND ADAPTIVE LOOP FILTER - Techniques for coding both edge and band offset values are described. Offset values may be predicted such that one offset value in a group of offset values is predicted from another offset value in the group. In addition, offset values of a partition may be predicted from offset values of a neighboring partition. Offset values may also be right shifted to be at a lower precision before signaling in the encoded video bitstream. A video decoding device may apply the techniques to filter a current partition based on offset values associated with a neighboring partition. | 04-04-2013 |
| 20130089135 | ADAPTIVE FRAME SIZE SUPPORT IN ADVANCED VIDEO CODECS - Techniques are described related to receiving a first decoded frame of video data, wherein the first decoded frame is associated with a first resolution, determining whether a decoded picture buffer is available to store the first decoded frame based on the first resolution, and in the event the decoded picture buffer is available to store the first decoded frame, storing the first decoded frame in the decoded picture buffer, and determining whether the decoded picture buffer is available to store a second decoded frame of video data, wherein the second decoded frame is associated with a second resolution, based on the first resolution and the second resolution, wherein the first decoded frame is different than the second decoded frame. | 04-11-2013 |
| 20130094564 | RATE-DISTORTION-COMPLEXITY OPTIMIZATION OF VIDEO ENCODING - A system and method provide a video coding system for optimizing encoding bitrate, distortion and complexity for a video hosting service. The system comprises an encoding module configured to encode multiple videos with a bitrate control strategy, a pair of complexity allocation control parameters and one or more target output video formats specifications, which include target resolution, target bitrate and target quality information. The encoding module obtains encoding bitrate, distortion and complexity performance samples from the encoding. From the encoding bitrate, distortion and complexity performance samples, the encoding module is configured to select optimal encoding bitrate, distortion and complexity performance samples. The encoding computation profile mapping module is configured to obtain multiple computation levels from the optimal encoding bitrate, distortion and complexity performance samples. For each computational level, a pair of optimized complexity allocation control parameters and number of encoding passes are selected. | 04-18-2013 |
| 20130094565 | RATE-DISTORTION-COMPLEXITY OPTIMIZATION OF VIDEO ENCODING GUIDED BY VIDEO DESCRIPTION LENGTH - A system and method provide a video description length (VDL) guided constant quality video encoding strategy with bitrate constraint and a video coding system for optimizing encoding bitrate, distortion and complexity of an input video. The method obtains an overall VDL, temporal VDL and spatial VDL of the input video and compares the overall VDL, temporal VDL and spatial VDL of the input video with a reference VDL, temporal VDL and spatial VDL. Based on the comparison, the method adjusts the encoding bitrate, the overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video and encodes the input video with the adjusted encoding bitrate, overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video. | 04-18-2013 |
| 20130094566 | VIDEO MULTI-CODEC ENCODERS - Systems and methods for a video multi-codec encoder are provided. Video input data including a plurality of video frames is accepted. At least one codec Y subsystem is applied to frame data that includes at least one video frame of the plurality of video frames, where the frame data includes at least an unencoded portion of the plurality of video frames before one or more of the at least one codec Y subsystem is applied. The at least one codec Y subsystem includes at least partial Y | 04-18-2013 |
| 20130094568 | Method and Apparatus for In-Loop Filtering - A method and apparatus for in-loop processing of reconstructed video are disclosed. The reconstructed video data is partitioned into image units. The image unit corresponds to a Largest Coding Unit (LCU), a slice, or a tile. Horizontal deblocking is applied to the reconstructed video data across vertical image-unit boundaries and then vertical deblocking operates on n pixels of horizontal-deblocked video data on each side of horizontal image-unit boundaries. According to various embodiments of the present invention, the horizontal deblocking is applied to at least one of said n reconstructed lines to generate at least a horizontal-deblocked line for line p | 04-18-2013 |
| 20130094569 | SAMPLE ADAPTIVE OFFSET MERGED WITH ADAPTIVE LOOP FILTER IN VIDEO CODING - Techniques for performing sample adaptive offset (SAO) and adaptive loop filter (ALF) processes in a video coding process are described. The SAO and ALF processes may be combined. In one example, the determination of offset values for a SAO filter process may be based on classifications used in an ALF process. In one example, an ALF classification that indicates a particular directional characteristic of a video block may be used to determine how and whether an SAO filter process is applied to each sample within the video block. | 04-18-2013 |
| 20130094570 | Adaptive Motion Estimation Cache Organization - In some embodiments, a motion estimation search window cache is adaptively re-organized according to frame properties including a frame width and a number of reference frames corresponding to the current frame to be encoded/decoded. The cache reorganization may include an adaptive mapping of reference frame locations to search window cache allocation units (addresses). In some embodiments, a search window is shaped as a quasi-rectangle with truncated upper left and lower right corners, having a full-frame horizontal extent. A search range is defined in a central region of the search window, and is laterally bounded by the truncated corners. | 04-18-2013 |
| 20130101015 | Complexity-Adaptive Scalable Decoding and Streaming for Multi-Layered Video Systems - Adaptive decoding and streaming multi-layer video systems and methods are described. The decoding systems comprise a base layer decoder and one or more enhancement layer decoders. The streaming systems comprise a base layer packetizer and one or more enhancement layer packetizers. A decoding adaptor controls operation of the base layer and/or enhancement layer decoders. A packetizing adaptor controls operation of the base layer and/or enhancement layer packetizers. | 04-25-2013 |
| 20130101016 | LOOP FILTERING AROUND SLICE BOUNDARIES OR TILE BOUNDARIES IN VIDEO CODING - The techniques of this disclosure apply to loop filtering across slice or tile boundaries in a video coding process. In one example, a method for performing loop filtering in a video coding process includes determining that pixels corresponding to filter coefficients of a filter mask for a loop filter are across a slice or tile boundary, removing filter coefficients corresponding to the pixels across the slice or tile boundary from the filter mask, renormalizing the filter mask without the removed filter coefficients, performing loop filtering using the renormalized filter mask. | 04-25-2013 |
| 20130101017 | PROVIDING OF ENCODED VIDEO APPLICATIONS IN A NETWORK ENVIRONMENT - A method for providing an encoded video application (3D APP; 2DAPP) from a server (SERVER) to a respective client (CLIENT | 04-25-2013 |
| 20130101018 | ADAPTIVE LOOP FILTERING FOR CHROMA COMPONENTS - This disclosure proposes techniques to allow more flexibility in filtering chroma components in the adaptive loop filter. In one example, a method for adaptive loop filtering includes performing luma adaptive loop filtering based for luma components of a block of pixels, and performing chroma adaptive loop filtering for chroma components of the block of pixels, wherein filter coefficients for both the luma adaptive loop filtering and chroma adaptive loop filtering are derived from a block-based mode or a region-based mode. The method may further include determining to perform luma adaptive loop filtering on the block of pixels, and determining to perform chroma adaptive loop filtering on the block of pixels, wherein the determining to perform chroma adaptive loop filtering is performed independently of determining to perform luma adaptive loop filtering. | 04-25-2013 |
| 20130101019 | SYSTEM AND METHOD FOR VIDEO CODING USING ADAPTIVE SEGMENTATION - A method for decoding compressed video information is disclosed. The video information can include a plurality of frames each having a plurality of blocks. The method reading, from the video information, a segment map associating at least some of the plurality of blocks in a first frame of the plurality of frames with at least one segment identifier, reading, from the video information, a current block to be decoded by a decoder, reading, from the segment map, a segment identifier that is associated with the current block, reading, from the video information, at least one segment parameter associated with the segment identifier that is associated with the current block and decoding the current block using the at least one segment parameter associated with the segment identifier that is associated with the current block. | 04-25-2013 |
| 20130101021 | METHOD AND APPARATUS FOR TRANSMITTING A CODED VIDEO SIGNAL - A method and apparatus for transmitting a digitally encoded video image in real time wherein the video image is digitally encoded using a compression algorithm having a variable bit rate, e.g., JPEG2K, to provide an encoded data stream, the encoded data stream is fed into a buffer of known size, and the data is read from the buffer via a streamer with a controllable bit rate to provide a bit stream at a desired stream bit rate for transmission. The bit rate of the encoded data stream from the encoder is monitored by a predictor and predicts a future bit rate of the encoded data stream; and, the bit rate of at least one of the encoder and the streamer is adjusted to provide the desired streaming bit rate wherein the predicting of the future bit rate is carried out using a prediction model based on a smoothed bit rate vs. time curve of the encoded data stream. | 04-25-2013 |
| 20130107940 | IMAGE PROCESSING DEVICE AND METHOD | 05-02-2013 |
| 20130114668 | VIDEO DECODER WITH ENHANCED CABAC DECODING - A decoder receives a bitstream containing quantized coefficients representative of blocks of video representative of a plurality of pixels and decodes the bitstream using context adaptive binary arithmetic coding that includes at least two decoding modes, the first mode decoding the bitstream based upon a probability estimate which is based upon at least one of spatially and temporally adjacent syntax element values to a current syntax element being decoded, the second mode decoding the bitstream not based upon a probability estimate based upon other syntax elements to the current syntax element being decoded. The coding decodes the current syntax element using the first mode if the current syntax element is intra-coded and selecting between sets probable modes with different probabilities. The coding decodes the current syntax element using the second mode if the current syntax element is intra-coded and if selecting among one of the second set of probable modes. | 05-09-2013 |
| 20130114669 | VLC COEFFICIENT CODING FOR LARGE CHROMA BLOCK - This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video coder (a video encoder or video decoder) determines whether a block of video data is a luma block or a chroma block. If the block of video data is a luma block, the video coder adaptively updates a VLC table index value based on a code number cn and value of a scaling factor. However, if the block of video data is a chroma block, the video coder adaptively updates the VLC table index value based on the code number cn and without using the scaling factor. The video coder uses the updated VLC table index value to select a VLC table of a plurality of VLC tables that are used to encode or decode the block of video data. | 05-09-2013 |
| 20130114670 | MULTIVIEW VIDEO CODING - Aspects of this disclosure relate to a method of coding video data. In an example, the method includes obtaining, from an encoded bitstream, one or more network abstraction layer (NAL) units for each view component of a plurality of view components of encoded video data, where each view component of the plurality of view components corresponds to a common temporal location, and where the one or more NAL units encapsulate at least a portion of the encoded video data for the respective view components and include information indicative of a decoding order of the respective view components. The method also includes obtaining information, separate from the NAL units, indicating relationships between view identifiers for the views and the decoding order of the view components. The method also includes decoding the encoded video data of the plurality of view components in the decoding order based on the received information. | 05-09-2013 |
| 20130114671 | CONTEXT REDUCTION FOR CONTEXT ADAPTIVE BINARY ARITHMETIC CODING - A reduction in the number of binarizations and/or contexts used in context adaptive binary arithmetic coding (CABAC) for video coding is proposed. In particular, this disclosure proposes techniques that may lower the number contexts used in CABAC by up to 56. | 05-09-2013 |
| 20130114672 | CONTEXT REDUCTION FOR CONTEXT ADAPTIVE BINARY ARITHMETIC CODING - A reduction in the number of binarizations and/or contexts used in context adaptive binary arithmetic coding (CABAC) for video coding is proposed. In particular, this disclosure proposes techniques that may lower the number contexts used in CABAC by up to 56. | 05-09-2013 |
| 20130114673 | CONTEXT REDUCTION FOR CONTEXT ADAPTIVE BINARY ARITHMETIC CODING - A reduction in the number of binarizations and/or contexts used in context adaptive binary arithmetic coding (CABAC) for video coding is proposed. In particular, this disclosure proposes techniques that may lower the number contexts used in CABAC by up to 56. | 05-09-2013 |
| 20130114674 | ADAPTIVE CENTER BAND OFFSET FILTER FOR VIDEO CODING - A video coder configured to perform sample adaptive offset filtering can determine a center value for a set of pixels based on values of pixels in the set, divide bands of pixels values into groups based on the center value, and determine offset values for the bands based on the groups. | 05-09-2013 |
| 20130114675 | CONTEXT STATE AND PROBABILITY INITIALIZATION FOR CONTEXT ADAPTIVE ENTROPY CODING - In one example, an apparatus for context adaptive entropy coding may include a coder configured to determine one or more initialization parameters for a context adaptive entropy coding process based on one or more initialization parameter index values. The coder may be further configured to determine one or more initial context states for initializing one or more contexts of the context adaptive entropy coding process based on the initialization parameters. The coder may be still further configured to initialize the contexts based on the initial context states. In some examples, the initialization parameters may be included in one or more tables, wherein, to determine the initialization parameters, the coder may be configured to map the initialization parameter index values to the initialization parameters in the tables. Alternatively, the coder may be configured to calculate the initialization parameters using the initialization parameter index values and one or more formulas. | 05-09-2013 |
| 20130114676 | CONTEXT OPTIMIZATION FOR LAST SIGNIFICANT COEFFICIENT POSITION CODING - A video encoder is configured to encode a binary sting indicating a position of a last significant coefficient within a video block. A video decoder is configured to decode the encoded binary string. The string may be coded using context adaptive binary arithmetic coding (CABAC). Binary indices of the binary string may be assigned a context. The context may be determined according to a mapping function. A context may be a assigned to one or more binary indices where each index is associated with a different block size. The last binary index of a 16×16 video block may share a context with the last binary index of a 32×32 video block. | 05-09-2013 |
| 20130114677 | DEVICES AND METHODS FOR SAMPLE ADAPTIVE OFFSET CODING AND/OR SIGNALING - In one embodiment, a method for decoding a video bitstream comprises the steps of: (a) receiving a video bitstream; (b) deriving processed video data from the bitstream; (c) partitioning the processed video data into blocks, wherein each of the blocks is equal to or smaller than a picture; (d) deriving an SAO type from the video bitstream for each of the blocks, wherein the SAO type is associated with a specific nonbiased coding scheme; (e) determining an SAO sub-class associated with the SAO type for each of the pixels in each of the blocks; (f) deriving intensity offset from the video bitstream for the sub-class associated with the SAO type; and (g) applying SAO compensation to each of the pixels in a processed video block, wherein the SAO compensation is based on the intensity offset of step (f). | 05-09-2013 |
| 20130114678 | DEVICES AND METHODS FOR SAMPLE ADAPTIVE OFFSET CODING AND/OR SIGNALING - In one embodiment, method for decoding a video bitstream comprises: (a) receiving a video bitstream; (b) deriving processed video data from the bitstream; (c) partitioning the processed video data into blocks, wherein each of the blocks is equal to or smaller than a picture; (d) deriving an SAO type from the video bitstream for each of the blocks, wherein the SAO type is selected from the group consisting of one or more edge offset (EO) types and a single merged band offset (BO) type; (e) determining an SAO sub-class associated with the SAO type for each of the pixels in each of the blocks; (f) deriving intensity offset from the video bitstream for the sub-class associated with the SAO type; and (g) applying SAO compensation to each of the pixels in a processed video block, wherein the SAO compensation is based on the intensity offset of step (f). | 05-09-2013 |
| 20130114679 | METHOD AND APPARATUS FOR VIDEO CODING USING ADAPTIVE LOOP FILTER - Methods for reducing blocking artifacts at the boundary between adjacent blocks reconstructed from a frame of compressed video information are disclosed herein. The frame includes a prediction stage parameter and a residual error attribute with respect to at least one of the blocks. One method includes reconstructing the at least one block based on the prediction stage parameter and the residual error attribute, categorizing the at least one reconstructed block into one of a plurality of categories based on the prediction stage parameter and the residual error attribute, identifying a filter strength value for the category in which the at least one reconstructed block is categorized based on at least one of the prediction stage parameter or the residual error attribute associated with that category, and filtering the boundary adjacent to the at least one reconstructed block using the identified filter strength value. | 05-09-2013 |
| 20130114680 | Systems and Methods for Multi-Layered Frame-Compatible Video Delivery - Multi-layered frame-compatible video delivery is described. Multi-layered encoding and decoding methods, comprising a base layer and at least one enhancement layer with reference processing, are provided. In addition, multi-layered encoding and decoding methods with inter-layer dependencies are described. Encoding and decoding methods that are capable of frame-compatible 3D video delivery are also described. | 05-09-2013 |
| 20130121401 | VIDEO COMPRESSION FOR HIGH EFFICIENCY VIDEO CODING - Encoding methods directed to making coding decisions and estimating coding parameters including searching for optimal angular prediction in intra-prediction mode; choosing the best intra block subdivision; and providing motion estimation for tree-structured inter coding. The methods are targeted to HEVC specifications of video compression, however, may be used with other video coding standards. | 05-16-2013 |
| 20130121402 | IMAGE CODING APPARATUS AND METHOD - An image coding apparatus includes: a division unit configured to divide a coding target picture included in an input video signal into a plurality of slices each including one or more data blocks; a coding unit configured to code the video signal in a unit of the slice divided by the division unit; and a setting unit configured to set at least one of a division position of the slice and a number of divisions of the slice, to the division unit. In the image coding apparatus, the setting unit sets at least one of the division position of the slice and the number of divisions of the slice so that slice boundaries differ from each other between adjacent pictures. | 05-16-2013 |
| 20130128949 | Early Stage Slice Cap Decision in Video Coding - A method for making a slice cap decision during encoding of a video sequence in a video encoding pipe is provided that includes determining a prediction mode for a macroblock, computing an estimated encoded size of the macroblock based on an adaptive macroblock size estimation model, and making a slice cap decision for a current slice based on the estimated encoded macroblock size, wherein the slice cap decision is made prior to entropy coding the macroblock. | 05-23-2013 |
| 20130128950 | METHOD AND SYSTEM OF BIT RATE CONTROL - A method and system for bit rate control during encoding of multimedia data are disclosed. A change in complexity of a multimedia picture relative to complexity associated with one or more multimedia pictures in a multimedia sequence is determined. A complexity associated with a multimedia picture is determined based on number of bits and an average quantization associated with the multimedia picture. A bit rate is adjusted for encoding the multimedia picture based on the change in complexity of the multimedia picture. The bit rate is increased on determining an increase in complexity of the multimedia picture and is decreased on determining a decrease in complexity of the multimedia picture. Utilization of additional bits during the increase in the bit rate and saving of bits during the decrease in the bit rate are compensated during adjusting of bit rates for encoding subsequent multimedia pictures in the multimedia sequence. | 05-23-2013 |
| 20130128951 | METHOD AND APPARATUS FOR DECODING CONTENT USING DECODING INFORMATION - Provided are an apparatus and method for decoding content data by using decoding information. The method includes: receiving a content switch requesting signal; receiving new content requested by the content switch requesting signal; extracting decoding information from the new content data; comparing the decoding information of the new content data to decoding information of previous content data; and, based on a result of the comparing the decoding information of the new content data to the decoding information of the previous content data, determining whether to stop a decoder. | 05-23-2013 |
| 20130128952 | Method and Apparatus for SSIM-Based Bit Allocation - A method and an encoder for SSIM-based bits allocation. The encoder includes a memory and a processor utilized for allocating bits based on SSIM, wherein the processor estimates the model parameter of SSIM-based distortion model for the current picture and determines allocates bits based on the SSIM estimation. | 05-23-2013 |
| 20130128953 | REPRODUCTION APPARATUS, REPRODUCTION METHOD, AND PROGRAM - A reproduction apparatus is disclosed which includes: an acquisition part configured to acquire a transmitted stream; a buffer configured to store the acquired stream; and a decoding part configured to perform the process of decoding the stream coming from the buffer. The reproduction apparatus further includes a control part configured such that if the amount of the stream occupying the buffer is below a predetermined reference value, the control part controls the frame rate of frames for reproduction acquired through the decoding process to be a lower frame rate than normal and that if the amount of the stream occupying the buffer reaches the reference value, the control part controls the frame rate of the frames to become the normal frame rate. | 05-23-2013 |
| 20130128954 | ENCODING METHOD AND APPARATUS - The encoding method includes: an information collecting step of collecting at least any one of coding information of a reference unit, which includes at least one of a first reference unit adjacent to a current coding unit or a current prediction unit, a second reference unit present at a position corresponding to the current coding unit or the current prediction unit in a reference image, and a third reference unit adjacent to the second reference unit, or coding information of a higher unit, which includes the current coding unit or the current prediction unit and has a size greater than that of the current prediction unit; and predictive coding performing step of performing predictive coding by determining whether to omit a predictive coding process with respect to the current coding unit or the current prediction unit by using the collected coding information. | 05-23-2013 |
| 20130128955 | BITRATE DISTRIBUTION - There is provided a method of processing video information, the method comprising encoding ( | 05-23-2013 |
| 20130128956 | APPARATUS AND METHOD FOR RECEIVING SIGNALS - A method of receiving a signal contains a first data stream at a first encoding rate and a second stream at a second encoding rate, outputting content from the first data stream if an error value of the first data stream is below a first error value, and outputting content from the second data stream if the error value of the first stream is above the first error value. An apparatus has a demodulator that receives a signal containing a first portion encoded at a first encoding rate and a second portion encoded at a second encoding rate, a controller that determines whether an error rate of a decoded first portion is above a first error rate, and an output driver that provides a video signal from a decoded second portion if the decoded first portion is above the first error rate. | 05-23-2013 |
| 20130136167 | LARGEST CODING UNIT (LCU) OR PARTITION-BASED SYNTAX FOR ADAPTIVE LOOP FILTER AND SAMPLE ADAPTIVE OFFSET IN VIDEO CODING - This disclosure relates to techniques for performing sample adaptive offset (SAO) processes in a video coding process. A video coder may store sets of SAO information. The SAO information may include data indicative of offset values. The video coder may also store mapping information that maps at least some of the sets of SAO information for one or more sequence partitions of a frame of video data. Additionally, the video coder may perform the SAO processes for one of the partitions of the frame based on the stored SAO information and the stored mapping information. | 05-30-2013 |
| 20130136168 | METHOD AND AN APPARATUS FOR ENCODING OR DECODING A VIDEO SIGNAL - A method of processing a video signal is disclosed. The present invention includes receiving prediction information of a macroblock and filer information, predicting a current picture using the prediction information of the macroblock, and applying a filter using the predicted current picture and the filter information. | 05-30-2013 |
| 20130136169 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 05-30-2013 |
| 20130136170 | MOTION VECTOR CALCULATION METHOD, PICTURE CODING METHOD, PICTURE DECODING METHOD, MOTION VECTOR CALCULATION APPARATUS, AND PICTURE CODING AND DECODING APPARATUS - A motion vector calculation method which attains a higher compression rate, includes: a selection step of selecting one of at least one reference motion vector of a reference block; and a calculation step of calculating a motion vector of a current block to be processed, using the one reference motion vector selected in the selection step, and in the selection step, when the reference block has two reference motion vectors, one of the two reference motion vectors is selected based on whether the reference block is located before or after the current block in display time order, and when the reference block has only one reference motion vector, the one reference motion vector is selected. | 05-30-2013 |
| 20130156094 | System and Method for Synchronizing Timing Across Multiple Streams - Systems and methods of adaptive streaming are discussed. Transcoded copies of a source stream may be aligned with one another such that the independently specified portions of each transcoded stream occur at the same locations within the content. These transcoded copies may be produced by one or more transcoders, whose outputs are synchronized by a delay adjuster. A fragmenter may use the synchronized and aligned streams to efficiently produce fragments suitable for use in adaptive streaming. | 06-20-2013 |
| 20130156095 | NETWORKED IMAGE/VIDEO PROCESSING SYSTEM - A distributed image/video processing system is disclosed herein wherein one or more of digital image/video recorders (e.g., a digital cameras, video recorders, or smart phones, etc.) are in network communication with central network site for transmitting image or video data thereto. The recorders process their image/video data dependent upon an estimate of a measurement of network bandwidth that is available for transmitting image or video data to the central network site. | 06-20-2013 |
| 20130156096 | BLOCK SIZE DEPENDENT FILTER SELECTION FOR MOTION COMPENSATION - Disclosed are various embodiments for determining a filter length according to a width and height of the reference block and selecting a filter based on the block size. Corresponding pixels from memory may be fetched based on the filter length and the block size. Reference pixels may be interpolated based on the selected filter to generate a prediction. | 06-20-2013 |
| 20130156097 | Adaptive Loop Filtering (ALF) for Video Coding - A method for adaptive loop filtering of a reconstructed picture in a video encoder is provided that includes determining whether or not sample adaptive offset (SAO) filtering is applied to the reconstructed picture, and using adaptive loop filtering with no offset for the reconstructed picture when the SAO filtering is determined to be applied to the reconstructed picture. | 06-20-2013 |
| 20130163659 | ESTIMATING COMPRESSED STORAGE SIZE OF DIGITAL DATA - Methods, systems and apparatus, including computer program products, for processing digital data. An approximate storage size is predicted for an output representation that uses variable length encoding. The approximate storage size can be used to determine one or more compression parameters to satisfy a global constraint, such as a maximum storage size for a compressed representation of the digital data. In a user interface, storage sizes can be graphically represented for multiple images. In the graphical representation, the storage size is represented for each image by a corresponding graphics object that includes a visual representation of the image and has a linear size that is proportional to the storage size of that image. | 06-27-2013 |
| 20130163660 | Loop Filter Techniques for Cross-Layer prediction - Disclosed are techniques for loop filtering in scalable video coding/decoding. An enhancement layer decoder decodes, per sample, coding unit, slice, or other appropriate syntax structure, an indication rlssp indicative of a stage in the base layer loop filter process. Reference sample information from a base layer for inter-layer prediction is taken from the indicated stage of the base layer loop filter. | 06-27-2013 |
| 20130163661 | VIDEO ENCODING USING EXAMPLE - BASED DATA PRUNING - Methods and apparatus are provided for encoding video signals using example-based data pruning for improved video compression efficiency. An apparatus for encoding a picture in a video sequence includes a patch library creator for creating a first patch library from an original version of the picture and a second patch library from a reconstructed version of the picture. Each of the first patch library and the second patch library includes a plurality of high resolution replacement patches for replacing one or more pruned blocks during a recovery of a pruned version of the picture. The apparatus also includes a pruner for generating the pruned version of the picture from the first patch library, and a metadata generator for generating metadata from the second patch library. The metadata is for recovering the pruned version of the picture. The apparatus further includes an encoder for encoding the pruned version of the picture and the metadata. | 06-27-2013 |
| 20130170541 | Video Compression Repository and Model Reuse - Systems and methods of improving video encoding/decoding efficiency may be provided. A feature-based processing stream is applied to video data having a series of video frames. Computer-vision-based feature and object detection algorithms identify regions of interest throughout the video datacube. The detected features and objects are modeled with a compact set of parameters, and similar feature/object instances are associated across frames. Associated features/objects are formed into tracks, and each track is given a representative, characteristic feature. Similar characteristic features are clustered and then stored in a model library, for reuse in the compression of other videos. A model-based compression framework makes use of the preserved model data by detecting features in a new video to be encoded, relating those features to specific blocks of data, and accessing similar model information from the model library. The formation of model libraries can be specialized to include personal, “smart” model libraries, differential libraries, and predictive libraries. Predictive model libraries can be modified to handle a variety of demand scenarios. | 07-04-2013 |
| 20130170542 | IMAGE PROCESSING DEVICE AND METHOD - This disclosure relates to an image processing device and method for reducing the load of image encoding, and a program. This technique involves: a filter control unit that controls an adaptive filtering operation to be performed on image data, in accordance with whether the image data is to be referred to by other image data; and a filtering operation unit that performs the adaptive filtering operation on the image data under the control of the filter control unit in a motion compensation loop. This technique can be applied to an image processing device, for example. | 07-04-2013 |
| 20130177066 | Context based Inverse Mapping Method for Layered Codec - Context based inverse mapping methods are provided. An image with pixel values within a lower dynamic range can be mapped to an image with pixel values within a higher dynamic range by utilizing context information associated with pixels in the lower dynamic range image. | 07-11-2013 |
| 20130177067 | DEVICES AND METHODS FOR SAMPLE ADAPTIVE OFFSET CODING AND/OR SELECTION OF EDGE OFFSET PARAMETERS - In one embodiment, a method for encoding sample adaptive offset (SAO) values in a video encoding process is provided, the method comprising: selecting an edge offset type; selecting one of one or more edge offset sub-classes; within at least one of the edge offset sub-classes, generating an interpolated pixel value that is related to a current pixel value; generating an offset value that is related to the interpolated pixel value; and optionally applying the offset value to at least the current pixel value to form an SAO compensated value. | 07-11-2013 |
| 20130177068 | DEVICES AND METHODS FOR SAMPLE ADAPTIVE OFFSET CODING - In one embodiment, a method for decoding a video bitstream having a plurality of pictures, the bitstream generated by a video coding system with sample adaptive offset (SAO), is provided, the method comprising the steps of: obtaining processed video data from a video bitstream; partitioning the processed video data into blocks, wherein each of the blocks is equal to or smaller than a picture and each block is comprised of a plurality of pixels; applying a first SAO compensation to each of the pixels in a processed video block; and applying a second SAO compensation to each of the pixels in the processed video block. | 07-11-2013 |
| 20130177069 | Context Adaptive Binary Arithmetic Coding (CABAC) with Scalable Throughput and Coding Efficiency - A method for encoding a video sequence is provided that includes entropy encoding syntax elements representative of transform coefficients generated as the video sequence is processed, wherein entropy encoding syntax elements representative of a transform coefficient includes binarizing the syntax elements representative of the transform coefficient to generate a plurality of binary symbols (bins), coding a portion of the plurality of bins in context coding mode, and coding a remaining portion of the plurality of bins in bypass coding mode. The method further includes reducing the number of bins that are coded in context coding mode for each transform coefficient in a plurality of subsequent transform coefficients that are entropy encoded after a specified number of transform coefficients have been entropy encoded. | 07-11-2013 |
| 20130177070 | SIGNIFICANCE MAP SUPPORT FOR PARALLEL TRANSFORM COEFFICIENT PROCESSING IN VIDEO CODING - In an example, aspects of this disclosure relate to a process for video coding that includes determining that a set of support for selecting a context model to code a current significant coefficient flag of a transform coefficient of a block of video data includes at least one significant coefficient flag that is not available. The process also includes, based on the determination, modifying the set of support, and calculating a context for the current significant coefficient flag using the modified set of support. The process also includes applying context-adaptive binary arithmetic coding (CABAC) to code the current significant coefficient flag based on the calculated context. | 07-11-2013 |
| 20130182756 | SYSTEMS AND METHODS FOR IMPROVING VIDEO STUTTER IN HIGH RESOLUTION PROGRESSIVE VIDEO - Systems and methods for improving video stutter in high resolution progressive video captured with fast exposure times. In a first approach, digital video is captured with fast shutter speeds that cause objects moving within the frame to appear motionless. The video codec generates motion information that may be utilized to add an artificial motion blur to each frame of the digital video during processing in a digital video pipeline. The motion blur creates the appearance that an object is moving in the frame. In a second approach, the lens assembly of the digital camera includes an electronically controlled filter that attenuates the light reaching an image sensor such that the shutter speeds may be decreased in order to capture motion blur. The electronically controlled filter may be a liquid crystal display (LCD) device that is set to a plurality of different transparency levels based on a target exposure value. | 07-18-2013 |
| 20130182757 | THROUGHPUT IMPROVEMENT FOR CABAC COEFFICIENT LEVEL CODING - This disclosure proposes various techniques for limiting the number of bins that are coded using an adaptive context model with context adaptive binary arithmetic coding (CABAC). In particular, this disclosure proposes to limit the number of bins that use CABAC for coding level information of transform coefficients in a video coding process. | 07-18-2013 |
| 20130182758 | DETERMINING CONTEXTS FOR CODING TRANSFORM COEFFICIENT DATA IN VIDEO CODING - In one example, a device for coding video data includes a video coder configured to determine values for coded sub-block flags of one or more neighboring sub-blocks to a current sub-block, determine a context for coding a transform coefficient of the current sub-block based on the values for the coded sub-block flags, and entropy code the transform coefficient using the determined context. | 07-18-2013 |
| 20130182759 | Method and Apparatus for Sample Adaptive Offset Parameter Estimation in Video Coding - A method for sample adaptive offset (SAO) filtering in a video encoder is provided that includes estimating SAO parameters for color components of a largest coding unit (LCU) of a picture, wherein estimating SAO parameters includes using at least some non-deblock-filtered reconstructed pixels of the LCU to estimate the SAO parameters, performing SAO filtering on the reconstructed LCU according to the estimated SAO parameters, and entropy encoding SAO information for the LCU in a compressed video bit stream, wherein the SAO information signals the estimated SAO parameters for the LCU. | 07-18-2013 |
| 20130182760 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - An image coding method decodes a coded stream which is generated by inter prediction coding a moving picture and includes processing units and a header of such units, the processing units including at least one processing unit divided in a hierarchy, the hierarchy including: a highest hierarchical layer in which a coding unit is a largest processing unit; and a lower hierarchical layer in which a prediction unit exists. The method comprises: identifying, by parsing hierarchy depth information stored in the header and indicating a hierarchical layer higher than a lowest hierarchical layer in which a smallest prediction unit exits, a hierarchical layer which is indicated by the hierarchy depth information or a hierarchical layer higher than the indicated hierarchical layer, the hierarchical layer having a prediction unit that stores an adaptive motion vector resolution switch flag necessary for decoding; and decoding the prediction unit, using the flag. | 07-18-2013 |
| 20130182761 | IMAGE INTRA PREDICTION METHOD AND APPARATUS - An apparatus and method for intra-predicting an image are provided. The method includes: obtaining, based on restored neighboring pixels of a chrominance block and restored neighboring pixels of a luminance pixel corresponding to the chrominance block, parameters representing a correlation between the chrominance block that is to be intra-predicted and a luminance block; and predicting, using the parameters, the chrominance block from the luminance block, wherein the obtaining the parameters includes performing a predetermined operation on the restored neighboring pixels of the chrominance block and the restored neighboring pixels of the luminance block, and wherein the predetermined operation comprises an adaptive scaling process of changing bit depths of the parameters to reduce a size of a look-up table and prevent an occurrence of overflow. | 07-18-2013 |
| 20130188683 | HIGH THROUGHPUT CODING FOR CABAC IN HEVC - A system utilizing a high throughput coding mode for CABAC in HEVC is described. The system may include an electronic device configured to obtain a block of level values from a bit stream; context decode a level code flag of the block; check whether there is a next level code flag of the block; if there is a next level code flag, determine whether a count of context-coded level code flags is greater than a threshold; in response to determining that the count is not greater than the threshold, bypass decode the next level code flag; in response to determining that the count is greater than the threshold, context decode the next level code flag; recover a block of TQCs or a residual sample using the decoded level code flags; and store the recovered block in a memory device and/or recover video data. | 07-25-2013 |
| 20130188684 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS AND IMAGE DECODING APPARATUS - An image coding method for coding an image on a block-by-block basis, includes: selecting, for each of a plurality of sub-blocks included in a coding-target block and each including a plurality of coefficients, a context for performing arithmetic coding on a parameter indicating a coding-target coefficient included in the sub-block from a context set corresponding to the sub-block, based on at least one reference coefficient located around the coding-target coefficient, the coding-target block being a transform unit; and performing arithmetic coding on the parameter indicating the coding-target coefficient using probability information about the selected context, wherein, in the selecting, the context is selected from the context set, the context set corresponding to a sum of (i) a value indicating a position in a horizontal direction of the sub-block in the coding-target block and (ii) a value indicating a position in a vertical direction of the sub-block in the coding-target block. | 07-25-2013 |
| 20130188685 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method for decoding a coded moving picture includes: switching a decoding order to either a fixed processing order or an adaptive processing order based on first information included in the coded moving picture; and decoding image data items included in the coded moving picture according to the decoding order switched to. | 07-25-2013 |
| 20130188686 | METHODS AND APPARATUSES FOR PROVIDING AN ADAPTIVE REDUCED RESOLUTION UPDATE MODE - Methods and apparatuses for applying adaptive reduced resolution update (RRU) processing are disclosed herein. An apparatus may include an encoder configured to receive a video signal and selectively downsample a first component of the video signal in accordance with a first RRU coding mode and a second component of the video signal in accordance with a second RRU coding mode, based on respective types of the first and second components of the video signal. An apparatus may include a decoder configured to receive an encoded bitstream and provide a recovered residual based on the encoded bitstream. The decoder may be configured to selectively upsample a first component of the recovered residual in accordance with a first RRU mode and to selectively upsample a second component of the recovered residual in accordance with a second RRU mode to provide a reconstructed signal based on signaling mechanisms of the encoded bitstream. | 07-25-2013 |
| 20130188687 | DIGITAL VIDEO COMPRESSION SYSTEM, METHOD AND COMPUTER READABLE MEDIUM - A video decoding method including: receiving an encoded block of data; decoding the encoded block of data to generate decoded data; and performing a sample adaptive offset on a whole or part of the decoded data, wherein a pixel B to be modified as part of the sample adaptive offset is adjacent to pixels A and C, and the pixel B is modified as part of the sample adaptive offset if (B≦A and B≦C) or (B≧A and B≧C). | 07-25-2013 |
| 20130188688 | DEVICES AND METHODS FOR CONTEXT REDUCTION IN LAST SIGNIFICANT COEFFICIENT POSITION CODING - In one embodiment, a method of video encoding, the method comprising: encoding a position of a last non-zero coefficient within a video block, wherein the position of the last non-zero coefficient is provided in a significance map according to block width; and assigning at least one context model to the significance map; wherein the at least one context model includes at least three first contexts, and wherein each of the first three contexts is configured to be shared across two or more blocks of different widths. | 07-25-2013 |
| 20130195168 | ENHANCED LIVE MULTIBITRATE VIDEO ENCODING - Multibitrate (MBR) live video broadcasting is disclosed in which live video input is copied into a plurality of streams each designated for encoding into a different bitrate. The MBR broadcasting operation is made efficient by performing pre-quantization calculations only the first of the plurality of streams. The results of those calculations are then merely copied to the other streams. Quantization and encoding processes may then be applied to each of the streams to process the streams into their respective, predetermined bitrates. | 08-01-2013 |
| 20130195169 | TECHNIQUES FOR MULTIVIEW VIDEO CODING - A method for decoding video encoded in a base view and at least one enhancement view format and having at least a difference mode and pixel mode, includes: decoding with a decoding device at least one flag bDiff indicative of a choice between the difference mode and the pixel mode, and reconstructing at least one sample in difference mode or pixel mode in accordance with the at least one flag bDiff. | 08-01-2013 |
| 20130195170 | DATA TRANSMISSION APPARATUS, DATA TRANSMISSION METHOD, AND STORAGE MEDIUM - A data transmission apparatus includes: a coding unit configured to code moving image data for each frame of the moving image data using an intra-frame coding method and an inter-frame coding method; an acquisition unit configured to acquire a set time that sets an upper limit of a time from a start of coding processing of a first frame using the intra-frame coding method to a start of coding processing of a second frame using the intra-frame coding method; and a decision unit configured to decide, based on at least a length of the set time, whether to code, using the intra-frame coding method, a third frame that undergoes coding processing during a time from the start of the coding processing of the first frame to an elapse of the set time. | 08-01-2013 |
| 20130195171 | METHOD OF CODING VIDEO AND STORING VIDEO CONTENT - A device comprising a video file creation module is configured to obtain a plurality of slices of coded video content. Parameter sets are associated with the coded video content. The video creation module encapsulates the plurality of slices of coded video content within one or more access units of a video stream. A first type of parameter set may be encapsulated within one or more access units of the video stream. A second type of parameter set may be encapsulated within a sample description. The sample description may include a dedicated array for parameter sets. | 08-01-2013 |
| 20130195172 | METHOD OF CODING VIDEO AND STORING VIDEO CONTENT - A device comprising a video file creation module is configured to obtain a plurality of slices of coded video content. Parameter sets are associated with the coded video content. The video creation module encapsulates the plurality of slices of coded video content within one or more access units of a video stream. A first type of parameter set may be encapsulated within one or more access units of the video stream. A second type of parameter set may be encapsulated within a sample description. The sample description may include an indicator identifying a number of temporal layers of the video stream. | 08-01-2013 |
| 20130195173 | METHOD OF CODING VIDEO AND STORING VIDEO CONTENT - A device comprising a video file creation module is configured to obtain a plurality of slices of coded video content. Parameter sets are associated with the coded video content. The video creation module encapsulates the plurality of slices of coded video content within one or more access units of a video stream. A first type of parameter set may be encapsulated within one or more access units of the video stream. A second type of parameter set may be encapsulated within a sample description. The sample description may include an indicator identifying a number of parameter sets stored within one or more access units of the video stream. | 08-01-2013 |
| 20130195174 | DEVICE ADAPTIVE VIDEO TRANSMISSION SYSTEM FOR USE WITH LAYERED VIDEO CODING AND METHODS FOR USE THEREWITH - A video transmission system includes a transceiver module that receives a device parameter from a remote device and that transmits a video signal to the remote device, wherein the video signal is transmitted as at least one separate video layer stream chosen from, an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A control module chooses the at least one separate video layer stream based on the device parameter. | 08-01-2013 |
| 20130195175 | SYSTEM AND METHOD FOR MULTI-ROW DECODING OF VIDEO WITH DEPENDENT ROWS - A system and method for decoding digital video by processing multiple regions of an image in parallel, even when there are dependencies between rows in the image, are disclosed. The method generally involves decoding multiple rows concurrently, with the start of decoding of a given row being delayed until portions of the other rows on which the given row depends have been decoded. The system generally comprises parallel processors, with one processor typically decoding one row and another processor typically decoding the row above it. In accordance with the present invention, however, any number or type of processors can decode, or perform decoding functions on, the image in parallel. | 08-01-2013 |
| 20130195176 | METHOD AND DEVICE FOR ENCODING/DECODING IMAGE USING ADAPTIVE ENCODING/DECODING MODE INDEXING METHOD - A video encoding/decoding apparatus and method using adaptive encoding/decoding mode indexing are provided. A video encoding apparatus includes: a probability generation unit for calculating a probability of each encoding mode of blocks completely encoded before a current block; a bit assignment unit for assigning and indexing a bin string according to the probability of each encoding mode, which is calculated by the probability generation unit; and a video encoding unit for encoding an encoding mode of the current block, based on the bin string assigned by the bit assignment unit, when the current block is encoded. | 08-01-2013 |
| 20130202025 | METHOD AND SYSTEM FOR TRANSMITTING VIDEO FRAME DATA TO REDUCE SLICE ERROR RATE - The present invention relates in general to video communication and streaming, and in particular, to transmitting video frame data over a communication network. A method of transmitting video frame data over a communication network comprises: obtaining a group of slices of a current video frame; assigning each of the slices to a channel of a plurality of channels reserved in a communication network; encoding each slice, based on channel characteristics of the channel to which it has been assigned, to obtain encoded data; packetizing the encoded data into encoded packets; and transmitting, over each of the reserved channels assigned to, the encoded packets comprising only encoded data of the corresponding assigned slice. This transmitting method reduces the slice error rate when transmitting several slices of a video frame over a communication network. | 08-08-2013 |
| 20130202026 | DEVICES AND METHODS FOR CONTEXT REDUCTION IN LAST SIGNIFICANT COEFFICIENT POSITION CODING - In one embodiment, a method of video encoding is disclosed, the method comprising: encoding a position of a last non-zero coefficient within a video block having a first width, wherein the position of the last non-zero coefficient is provided as a string of binary values, wherein each binary value in said string corresponds to a bin index value; and determining a context index value for each bin index value, wherein the context index value for each bin index value is configured to be shared across two or more blocks of different widths. | 08-08-2013 |
| 20130202027 | PROGRAM CLOCK REFERENCE INSERTION - There is provided a method for clock reference insertion during packetization of an encoded data stream, wherein said packetization is performed before buffering of the data stream. The method comprises storing the value of each bit rate applied during encoding, and the duration of time for which each bit rate is applied. A clock reference time interval is converted into a clock reference data interval using the value of each bit rate applied and the duration of time for which each bit rate is applied. The clock reference data interval is used to determine where to insert a clock reference into the data stream during packetization. | 08-08-2013 |
| 20130202028 | CASCADING MULTIPLE VIDEO TRANSCODERS IN A VIDEO PROCESSING SYSTEM - A system (and a method) are disclosed for a video processing system with enhanced entropy coding performance. The system includes an entropy decoder configured to divide decoding of an input video stream into arithmetic decoding and syntax decoding. The entropy decoder includes an arithmetic decoding module, a syntax decoding module, a memory management module and a memory buffer connecting the two decoding modules. The arithmetic decoding module is configured to decode the input video stream into multiple bins of decoded input video stream and the syntax decoding module is configured to decode the bins of arithmetically decoded input videos stream into one or more syntax elements. The memory management module uses the memory buffer to accelerate the coding performances of arithmetic decoding and syntax decoding. The system also includes a corresponding entropy encoder configured to encode a video stream with improved coding performance. | 08-08-2013 |
| 20130208784 | ADAPTIVE REGION OF INTEREST - This disclosure relates to adaptively determining and improving the quality of a region of interest in video content. A region inspection component inspects regions of an image. A detection component determines chroma values contained in the regions. A comparison component compares the chroma values against a set of predetermined chroma values, and determines, based on the comparison, a set of regions of interest in the frame. An encoder encodes the regions of interest in the image at a higher or better quality than a remainder of the image. | 08-15-2013 |
| 20130208785 | Video Detection in Remote Desktop Protocols - Embodiments of the present disclosure provide for dividing a display area having rendered data thereon into a plurality of tiles and determining an update frequency for each tile. A determination is then made as to whether the update frequency of each tile exceeds a threshold. For each tile whose update frequency exceeds the threshold, that tile is marked as a candidate tile. Each of the adjacent candidate tiles are then associated to form a heat map. The heat map is then analyzed to determine whether to encode the rendered data associated with the heat map. | 08-15-2013 |
| 20130208786 | Content Adaptive Video Processing - In some embodiments, both video quality and processing speed may be traded off on the fly automatically. Thus different methods and parameters may be invoked to achieve a dynamically varying balance between speed and quality. | 08-15-2013 |
| 20130208787 | Methods And Apparatus For Implicit Adaptive Motion Vector Predictor Selection For Video Encoding And Decoding - Methods and apparatus are provided for implicit adaptive motion vector predictor selection for video encoding and decoding. The method encodes an image block using implicit adaptive motion vector predictor selection. The motion vector for encoding the block is predicted by defining a set of motion vector predictor candidates for the block based on a plurality of spatio-temporal neighboring motion vectors; and then selecting from the set a particular motion vector predictor candidate as the motion vector for encoding the bloc. The selection is made responsive to respective values for a fidelity of the spatio-temporal neighboring motion vectors. | 08-15-2013 |
| 20130208788 | Sample adaptive offset (SAO) in accordance with video coding - Sample adaptive offset (SAO) in accordance with video coding. SAO filtering may be performed before e-blocking processing (e.g., in accordance with video signal decoding and/or encoding). For example, a receiver and/or decoder communication device may receive signaling from a transmitter and/or encoder communication device that includes various band offsets. Corresponding band indices may be determined via analysis of the received video signal (e.g., received from the transmitter and/or encoder communication device), inferentially without requiring signaling of such band indices from the transmitter and/or encoder communication device. Upon appropriate analysis of one or more largest coding units (LCUs) generated from the video signal to determine a pixel value distribution (e.g., which may be using a histogram in one instance), then based on that pixel value distribution, the band indices are identified and the band offsets applied thereto. | 08-15-2013 |
| 20130208789 | Method And System Of Improving Quality Of Video Beaming - A method for improving quality of video beaming of any content by a beaming application that is running on a computerized mobile device is provided herein. The method comprising the steps of: (iii) selecting content for beaming; (ii) beaming by utilizing a beaming application; (iii) identifying in real time a pattern change in beamed video, wherein the pattern change signifies transition from a previous rate of a predefined size of chunk of delivered data to a higher rate of currently delivered data in content displaying pattern by the application which starts a set of critical frames; (iv) performing quality improvement of the video beaming of the set of critical frames based on the identified pattern changes; and (v) identifying in real time a second pattern change in display video to a lower delivered data rate which ends the set of critical frames. | 08-15-2013 |
| 20130215956 | VIDEO SYSTEM FOR DISPLAYING IMAGE DATA, METHOD AND COMPUTER PROGRAM - A video system | 08-22-2013 |
| 20130215957 | Methods and Apparatus for Decoding Video Images - Method and apparatus for decoding a compressed motion compensated video sequence is provided. Image data comprises reference pictures (R) and motion vectors for deriving intermediate pictures (I, B) from reference pictures. The maximum vertical extent of the motion vector corresponds to a number of lines in image data. A reference picture is received along with a set of motion vectors to derive a picture from the reference picture. This next picture is decoded once the vertical extent of the reference picture received exceeds the maximum vertical extent of a motion vector from a starting position. Further set(s) of motion vectors for deriving further picture(s) can be received and for each picture to be derived, the image data is decoded using a respective further set of motion vectors after an area of a respective reference picture has been decoded to a maximum vertical extent of a motion vector from a starting position. | 08-22-2013 |
| 20130215958 | ENCODING AND DECODING DEVICE AND METHOD USING INTRA PREDICTION - The present disclosure relates to encoding and decoding apparatus and method using intra prediction. The encoding apparatus includes a reference pixel characteristics extractor for receiving reference pixel(s) included in neighboring blocks of a target block to encode to determine a reference pixel characteristic and determining whether adaptive filtering is applied to the reference pixel(s), based on reference pixel characteristic; a first intra predictor responsive to when the adaptive filtering is determined by the reference pixel characteristics extractor to be applied for comparing between results of performing intra prediction using high-frequency filtered reference pixel and intra prediction using high-frequency-unfiltered reference pixel to output the cost-efficient result along with filtering information indicating whether to perform filtering; and a second intra predictor for outputting the result of performing the intra prediction using the high-frequency-unfiltered reference pixel when the reference pixel characteristics extractor determines that the adaptive filtering is not to be applied. | 08-22-2013 |
| 20130215959 | Method of Filter-Unit Based In-Loop Filtering - Methods for filter-unit based in-loop filtering in a video decoder and encoder are disclosed. In one embodiment, filter parameters are selected from a filter parameter set for each filter based on a filter index. In another embodiment, the picture is partitioned into filter units according to filter unit size, which can be selected between a default size and other size. When other size is selected, the filter unit size may be conveyed using direct size information or ratio information. In another embodiment, a merge flag and a merge index are used to convey filter unit merge information. A method for filter-unit based in-loop filtering in a video encoder for color video is disclosed. In one embodiment, the method incorporates filter syntax in the video bitstream by interleaving the color-component filter syntax for the FUs. | 08-22-2013 |
| 20130223510 | Encoding Optimization Using Quality Level of Encoded Segments - In one embodiment, a method includes encoding a media file using a variable bitrate encoding algorithm based on a plurality of bitrate ranges to generate a set of encoded segments. For each bitrate range, an encoded segment for each segment of the media file is determined from the set of encoded segments based on a quality level of the encoded segment and each bitrate range. The method then identifies a playlist for each bitrate range including the encoded segment for each segment of the media file that was determined for each bitrate range. At least one playlist includes an encoded segment that was generated based on another bitrate range using the variable bitrate encoding algorithm. | 08-29-2013 |
| 20130223511 | METHOD AND DEVICE FOR MIXING VIDEO STREAMS AT THE MACROBLOCK LEVEL - The invention relates to a method and device for mixing video streams in a video mixer device, by means of which a plurality of input video streams from different subscribers which are encoded with code words for macroblocks and in which the code words have interdependencies are combined into an output video stream. The input video streams are at least entropy-decoded to such a degree that the dependencies among the code words are dissolved, wherein the macroblocks are re-organized and mixed with each other, and the mixed macroblocks are entropy-encoded to obtain a new dedicated video stream. | 08-29-2013 |
| 20130223512 | METHOD OF STORING MOTION VECTOR INFORMATION AND VIDEO DECODING APPARATUS - A video decoding apparatus includes a bitstream parser, a calculator and a memory. The bitstream parser is provided to receive a video bitstream and extracting a set of constraints associated with the video bitstream, wherein the set of constraints has information associated with a direct_8×8_inference flag for a macroblock of a picture, wherein the macroblock has N sub-macroblock partitions. The calculator is provided to calculate first motion vector information associated with the macroblock and obtain second motion vector information associated with K of the N sub-macroblock partitions from the first motion vector information according to the information associated with the direct_8×8_inference flag, wherein K is less than N. The memory is provided to store the second motion vector information. | 08-29-2013 |
| 20130223513 | Error Resilient Rate Distortion Optimization for Image and Video Encoding - Error resilient rate distortion optimization (ERRDO) is used for transmitting high quality images and video over constrained bandwidth networks, e.g., in streaming applications. Transmitting high quality images and video by reducing computational complexity is described. | 08-29-2013 |
| 20130223514 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND PROGRAM - A video encoding device includes: transform means | 08-29-2013 |
| 20130230095 | Drift Reduction for Quality Scalable Video Coding - This invention is a method of scalable video encoding and decoding. The scalable video encoding codes both a base layer and an enhanced layer having greater resolution and/or refresh rate. Upon decoding some enhanced layer pictures may be dropped to reach a best resolution and refresh rate within a target data rate. Upon encoding a key picture in at least one group of pictures forming the video is a combined base layer/enhanced layer key picture. Such a combined base layer/enhanced layer key picture cannot be dropped on decoding. This technique reduces drift in the decoder. | 09-05-2013 |
| 20130230096 | METHODS FOR ENCODING AND DECODING AN IMAGE, AND CORRESPONDING DEVICES - A method for encoding at least one frame comprising a plurality of blocks of pixels, each block having a block type, includes the steps of:
| 09-05-2013 |
| 20130230097 | SCAN-BASED SLIDING WINDOW IN CONTEXT DERIVATION FOR TRANSFORM COEFFICIENT CODING - A video coding process that includes defining a context derivation neighborhood for one of a plurality of transform coefficients based on a transform coefficient scan order. The process also includes determining a context for the one of the plurality of transform coefficients based on the context derivation neighborhood. The process also includes coding the one of the plurality of transform coefficients based on the determined context. | 09-05-2013 |
| 20130235926 | Memory efficient video parameter processing - Memory efficient video parameter processing. A communication system including at least two respective devices, namely, a transmitter device and a receiver device, operates with significant reduction in the amount of signaling provided between those respective devices. Such devices may be transceiver devices. Considering such a transmitter device that includes an encoder, such as a video encoder, and a receiver device that includes a decoder, such as a video decoder, and output bitstream corresponding to an encoded video signal may be provided from the transmitter device and received by the receiver device. Such an output bitstream may be generated by a video encoder within the transmitter device and may subsequently undergo appropriate processing by a video decoder within the receiver device. One or more frame-based signals, corresponding respectively to the number of blocks, may be communicated as being respectively limited to at most one step of recursion among the various blocks. | 09-12-2013 |
| 20130235927 | METHODS AND APPARATUSES FOR ENCODING AND DECODING VIDEO - The present invention introduces new methods and apparatuses for decoded picture buffer (DPB) management using reference picture set (RPS) where consecutive reference picture sets are conFIG.d such that reference pictures is set/marked as non-reference at appropriate instances and/or according to predetermined priorities. Using the present invention, the DPB size is kept at a minimum while supporting both optimal reference picture configuration and correct output reordering. Benefits of the present invention are in the form of improved coding efficiency and/or reduced memory storage for DPB. | 09-12-2013 |
| 20130243079 | STORAGE AND PROCESSING SAVINGS WHEN ADAPTING VIDEO BIT RATE TO LINK SPEED - A method includes creating a video stream using alternating portions of video from at least two previously compressed files of similar video content having one or both of differing bit rates or dimensional qualities. The video stream is created to have a bit rate that is intermediate bit rates of the at least two previously compressed files. The intermediate bit rate is based on one or more estimates of a wireless link speed over a wireless channel between a user equipment and a network. The method includes outputting the created video stream. Apparatus and program products are also disclosed. | 09-19-2013 |
| 20130243080 | Overlapped Rate Control For Video Splicing Applications - Rate control techniques are provided for encoding an input video sequence into a compressed coded bitstream with multiple coding passes. The final coding pass may comprise final splices with non-overlapping frames that do not extend into neighboring final splices. A final splice in the final coding pass may correspond to at least one non-final splice in a non-final coding pass. A non-final splice may have overlapping frames that extend into neighboring final splices in the final coding pass. The overlapping frames in the non-final splice may be used to derive complexity information about the neighboring final splices. The complexity information about the neighboring final splices, as derived from the overlapping frames, may be used to allocate or improve rate control related budgets in encoding the final splice into the compressed coded bitstream in the final coding pass. | 09-19-2013 |
| 20130243081 | HIGH-LEVEL SYNTAX EXTENSIONS FOR HIGH EFFICIENCY VIDEO CODING - In one example, a device includes a video coder configured to code a picture order count (POC) value for a first picture of video data, code a second-dimension picture identifier for the first picture, and code, in accordance with a base video coding specification or an extension to the base video coding specification, a second picture based at least in part on the POC value and the second-dimension picture identifier of the first picture. The video coder may comprise a video encoder or a video decoder. The second-dimension picture identifier may comprise, for example, a view identifier, a view order index, a layer identifier, or other such identifier. The video coder may code the POC value and the second-dimension picture identifier during coding of a motion vector for a block of the second picture, e.g., during advanced motion vector prediction or merge mode coding. | 09-19-2013 |
| 20130243082 | RATE OPTIMISATION FOR SCALABLE VIDEO TRANSMISSION - The disclosure concerns encoding of information, such as content information for streaming, in a scalable manner. That is, a base layer of encoded content can be supplemented by one or more enhancement layers as channel capacity allows. Definition of bounds for the base layer and the one or more enhancement layers is governed by long-term channel information, while selection of layers for transmission at a particular time is governed by short-term, or instantaneous, channel state considerations. | 09-19-2013 |
| 20130243083 | Low-Complexity Two-Dimensional (2D) Separable Transform Design with Transpose Buffer Management - Methods are provided for reducing the size of a transpose buffer used for computation of a two-dimensional (2D) separable transform. Scaling factors and clip bit widths determined for a particular transpose buffer size and the expected transform sizes are used to reduce the size of the intermediate results of applying the 2D separable transform. The reduced bit widths of the intermediate results may vary across the intermediate results. In some embodiments, the scaling factors and associated clip bit widths may be adapted during encoding. | 09-19-2013 |
| 20130251024 | METHOD AND DEVICE TO IDENTIFY MOTION VECTOR CANDIDATES USING A SCALED MOTION SEARCH - A scaled motion search section can be used in a video processing device that processes a video input signal that includes a plurality of pictures. The scaled motion search section includes a downscaling module that downscales the plurality of pictures to generate a plurality of downscaled pictures, wherein the downscaling module includes a horizontal downscaling filter and a vertical downscaling filter, and wherein the vertical downscaling filter generates downscaled pixels for a macroblock pair using only pixels from the macroblock pair. A transfer function that models the scaled motion vectors is determined and used to identify a final set of motion vector candidates used in a larger scale motion search. | 09-26-2013 |
| 20130251025 | MEMORY BANDWIDTH REDUCTION DURING VIDEO CAPTURE - Certain aspects of the present disclosure are directed to a video processing module, including: a video capture module configured to capture a screen display; a compression module configured to compress the screen display to construct compressed data representing the screen display; and a memory module configured to store the compressed data. Certain aspects are directed to a computer-implementable method, including: reading compressed video data having a plurality of data units and representing a screen display out of a data storage, the data units including a line tag, an encoding tag, and a pixel value data unit; detecting a line tag from the compressed video data and extracting a line number from the line tag; receiving an expected line number from a counter; comparing the line number with the expected line number and determining a comparison result; and determining whether a fault exists based on the result. | 09-26-2013 |
| 20130251026 | CODED BLOCK FLAG INFERENCE IN VIDEO CODING - A video decoder determines whether a first condition is satisfied. The first condition is satisfied when any sibling residual quad tree (RQT) node of a current RQT node is associated with a significant luma coefficient block. In addition, the video decoder determines whether a second condition is satisfied. The second condition is satisfied when a chroma transform block of a parent RQT node of the current RQT node is significant and is split along with a luma transform block of the parent RQT node. In response to determining that neither the first nor the second condition is satisfied, the video decoder determines that a luma coded block flag (CBF) for the current RQT node is omitted from the bitstream. | 09-26-2013 |
| 20130251027 | Complexity Scalable Multilayer Video Coding - A multi-layer video system has a first layer encoder that encodes a first layer of video information, at least one second layer encoder that encodes at least one second layer of video information, and an encoder side reference processing unit (RPU) that estimates one or more of an optimal filter or an optimal process that applies on a reference picture that is reconstructed from the first video information layer, and processes a current picture of the second video information layer, based on a correlation between the first layer reconstructed reference picture. The correlation relates to a complexity characteristic that scaleably corresponds to the first video information layer reconstructed reference picture and the second video information layer current picture. A scalable video bitstream is outputted, which may be decoded by a compatible decoder. A decoder side RPU and the encoder side RPU function as an RPU pair. | 09-26-2013 |
| 20130251028 | VIDEO ENCODING AND DECODING WITH CHANNEL PREDICTION AND ERROR CORRECTION CAPABILITY - Data encoding and/or decoding techniques are applied in a codec system. Pixel parameters and error thresholds can be determined. A prediction mode can be determined. Further, a prediction mode can predict values of an encoded and/or decoded media item. In one aspect, compositions of media items can determine prediction modes. | 09-26-2013 |
| 20130251029 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - Provided is an image processing device including a decoding section that decodes an encoded stream to generate an image, a line determining section that determines whether to apply a deblocking filter to each of lines perpendicular to a boundary in neighboring blocks neighboring across the boundary in the image generated by the decoding section, and a filtering section that applies the deblocking filter to each line to which the line determining section determines to apply the deblocking filter. | 09-26-2013 |
| 20130259116 | Two Bins Per Clock CABAC Decoding - CABAC coefficient decoding may be increased to two bins per clock. Since coefficients comprise most of the bitstream, this improvement almost doubles the CABAC decoding for a low quantization parameter bitstream (with lots of coefficients). | 10-03-2013 |
| 20130259117 | Method and Apparatus of Adaptive Loop Filtering - A method and apparatus for processing of coded video using adaptive offset (AO) are disclosed. Embodiments of the present invention divide reconstructed video data into multiple filter units and apply adaptive offset to the filter units to generate filtered video data, where boundaries of filter units correspond to boundaries of coding units and each of said filter units contains at least one coding unit. Furthermore, two or more of the multiple filter units can be merged as indicated by a merge index to share the applied adaptive offset. A filter control flag can be used to indicate filter ON/OFF control. The luma and chroma components may also share the same filter information. In another embodiment, the filter information sharing among filter units can be applied regardless whether the boundaries of the filter units are aligned with the boundaries of the coding units. | 10-03-2013 |
| 20130259118 | Method and Apparatus for Improved In-Loop Filtering - Methods and apparatuses for video decoding and encoding with in-loop processing of reconstructed video are disclosed. At the decoder side, the method comprises receiving a flag from the video bitstream and according to the flag, the method receives information associated with in-loop filter parameters either from a data payload in the video bitstream to be shared by two or more coding blocks or individual coding block data in the video bitstream. At the encoder side, the method comprises incorporating information associated with the in-loop filter parameters either in a data payload in a video bitstream to be shared by two or more coding blocks or interleaved with individual coding block data in the video bitstream according to a flag. The data payload in the video bitstream is in a picture level, Adaptation Parameter Set (APS), or a slice header. | 10-03-2013 |
| 20130266057 | Noise Reduction for Image Sequences - Described herein are techniques related to noise reduction for image sequences or videos. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope and meaning of the claims. A noise reduction tool includes a motion estimator configured to estimated motion in the video, a noise spectrum estimator configured to estimate noise in the video, a shot detector configured to trigger the noise estimation process, a noise spectrum validator configured to validate the estimated noise spectrum, and a noise reducer to reduce noise in the video using the estimated noise spectrum. | 10-10-2013 |
| 20130266058 | DEVICES AND METHODS FOR SIGNALING SAMPLE ADAPTIVE OFFSET (SAO) PARAMETERS - Systems and methods that improve video quality by signaling of parameters in a sample adaptive offset (SAO) process are disclosed. The methods and systems described herein generally pertain to video processing such as video encoders and decoders. | 10-10-2013 |
| 20130266059 | LCU-BASED ADAPTIVE LOOP FILTERING FOR VIDEO CODING - This disclosure describes techniques associated with filtering reconstructed video data in a video encoding and/or video decoding processes and, more particularly, this disclosure describes techniques related to adaptive loop filtering. According to one technique of this disclosure, instead of implementing region adaptive (RA) classification using a fixed set of regions, a variable number of regions in a picture can be used. According to another technique of this disclosure, a global set of filters can be signaled in a parameter set from an encoder to a decoder, but instead of selecting filters from the global set based on an RA classification or a block adaptive (BA) classification, a filter from the global set can be explicitly signaled, for a given block, using a filter ID associated with the filter. | 10-10-2013 |
| 20130266060 | Reduced Complexity Coefficient Transmission for Adaptive Loop Filtering (ALF) in Video Coding - A method for adaptive loop filtering is provided that includes determining a coefficient value for each coefficient position of an adaptive loop filter, applying the adaptive loop filter to at least a portion of a reconstructed picture using the coefficient values, and entropy encoding coefficient values into a compressed bit stream using predetermined short binary codes, wherein the short binary code used depends on the coefficient position of the coefficient value. | 10-10-2013 |
| 20130266061 | Method and Apparatus of Deblocking Filter - A method and apparatus for improved deblocking filter are disclosed. In one embodiment according to the present invention, determining the non-zero transform coefficients existence for a PU-only boundary is skipped and therefore the deblocking filter for PU-only boundary is eliminated if the condition of boundary strength equal to 1 is not fulfilled to avoid unnecessary deblocking. In another embodiment of the present invention, three gradients are determined for two pixel lines and filter ON/OFF decision is made based on the three gradient values of the two pixel lines. One aspect of the invention is related to filter strength selection between strong and weak filters. According to one embodiment, the filter strength selection is based on various gradient values of a pixel line across the block boundary. Another aspect of the invention is related to the weak filter. | 10-10-2013 |
| 20130272374 | SCALABLE, LIVE TRANSCODING WITH SUPPORT FOR ADAPTIVE STREAMING AND FAILOVER - A system and method for a live streaming platform that can redundantly process input streams in parallel ingestion pipelines is disclosed herein. Ingested input streams in the parallel pipelines can be segmented using a segmentation function that creates identical segments in each of the streams in the pipelines. If errors occur, or there are disruptions in one or more of the input streams or pipelines, the live streaming platform can ensure that segments are identifiable and different parts of the pipelines can join a main stream at different points in time without disruption. | 10-17-2013 |
| 20130272375 | EVALUATION OF SIGNALING OF COLLOCATED REFERENCE PICTURE FOR TEMPORAL PREDICTION - A method determines a value for a first flag that controls whether a temporal motion vector is used for a slice. If the value of the first flag is a first value, the method performs: evaluating a first condition to determine whether to encode or decode a second flag; if the first condition indicates the second flag should be used, encoding or decoding the second flag in encoding or decoding the slice; evaluating a second condition to determine whether to encode or decode position information that indicates a position that contains the collocated reference picture; and if the second condition indicates the position information should be used, encoding or decoding the position information in encoding or decoding the slice. If the first flag is a second value, the method does not encode or decode the second flag and the position information. | 10-17-2013 |
| 20130272376 | SAMPLE ADAPTIVE OFFSET (SAO) FILTER WITH BOUNDARY INTERPOLATION - A boundary interpolation method is described for use with band offsets (BO) and largest coding units (LCU) within a video encoder. In BO, for example, very different offsets could otherwise be added to neighboring pixels which result in large discontinuities and visual artifacts. An interpolation, such as linear, is performed between the BO, or the periphery of the LCU, or a combination thereof, to smooth the offset function toward preventing introduction of visual artifacts. | 10-17-2013 |
| 20130272377 | BYPASS BINS FOR REFERENCE INDEX CODING IN VIDEO CODING - In an example, aspects of this disclosure relate to a method for decoding a reference index syntax element in a video decoding process that includes decoding at least one bin of a reference index value with a context coding mode of a context-adaptive binary arithmetic coding (CABAC) process. The method also includes decoding, when the reference index value comprises more bins than the at least one bin coded with the context coded mode, at least another bin of the reference index value with a bypass coding mode of the CABAC process, and binarizing the reference index value. | 10-17-2013 |
| 20130272378 | COEFFICIENT GROUPS AND COEFFICIENT CODING FOR COEFFICIENT SCANS - Techniques are described for a video coder (e.g., video encoder or video decoder) that is configured to select a context pattern from a plurality of context patterns that are the same for a plurality of scan types. Techniques are also described for a video coder that is configured to select a context pattern that is stored as a one-dimensional context pattern and identifies contexts for two or more scan types. | 10-17-2013 |
| 20130272379 | COEFFICIENT GROUPS AND COEFFICIENT CODING FOR COEFFICIENT SCANS - Techniques are described for a video coder (e.g., video encoder or video decoder) that is configured to select a context pattern from a plurality of context patterns that are the same for a plurality of scan types. Techniques are also described for a video coder that is configured to select a context pattern that is stored as a one-dimensional context pattern and identifies contexts for two or more scan types. | 10-17-2013 |
| 20130272380 | GROUPING BYPASS CODED SYNTAX ELEMENTS IN VIDEO CODING - A video encoding device is configured to generate a first group of syntax elements. Each syntax element in the first group indicates whether a prediction mode of a respective prediction unit (PU) is based on an index into a list of most probable modes. A second group of syntax elements is generated that correspond to respective syntax elements in the first group. The syntax elements in the second group identify either an index into the list of most probable modes or an intra-prediction mode. The first group of syntax elements are context adaptive binary arithmetic coding (CABAC) encoded, and the second group of syntax elements are bypass encoded. A video decoder is configured to receive the entropy encoded first and second groups of syntax elements. The video decoder CABAC decodes the first group of flags and bypass decodes the second group of flags. | 10-17-2013 |
| 20130272381 | SIMPLIFIED NON-SQUARE QUADTREE TRANSFORMS FOR VIDEO CODING - In an example, a method of decoding video data includes determining a prediction partitioning structure for predicting pixel values associated with a block of video data. The method also includes determining a transform partitioning structure for applying one or more transforms to the predicted pixel values. Determining the transform split structure includes splitting a parent transform unit, upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more square transforms, determining one or more square transforms such that each of the one or more square transforms correspond to exactly one prediction partition, and upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more non-square transforms, determining whether to split the one or more non-square transforms based at least in part on the one or more non-square transforms being non-square. | 10-17-2013 |
| 20130272382 | FIELD/FRAME ADAPTIVE DECODING WITH FIELD/FRAME INDEX - A moving picture coding method for coding a picture with switching between frame coding and field coding adaptively on a block-by-block basis includes: determining the maximum number of reference indices for field coding for specifying fields which are to be referred to at the time of field coding, using the maximum number of reference indices for frame coding for specifying frames which are to be referred to at the time of frame coding; and assigning to fields the reference indices for field coding for specifying fields which are to be referred to at the time of field coding, within a range of the determined maximum number thereof, using the reference indices for frame coding for specifying frames which are to be referred to at the time of frame coding. | 10-17-2013 |
| 20130279563 | DETECTION OF VIDEO FEATURE BASED ON VARIANCE METRIC - A metric representing the sum of variances for pixel blocks of a region of an image are used to identify the presence a video feature of the image, and a transcoding is performed responsive to identifying the presence of the video feature. The identified video feature can include, but is not limited to, a scene change, the presence of a black border region or a caption region, or the complexity of the image. The transcoding operation can include, but is not limited to, coding the image as an Intra-frame, omitting the content corresponding to the black border region or the caption region from the transcoded image or allocating a relatively lower bit budget for the black border region or a relatively higher bit budget to the caption region during transcoding of the image, or setting the bit budget for rate control during transcoding. | 10-24-2013 |
| 20130279564 | VIDEO CODING WITH ENHANCED SUPPORT FOR STREAM ADAPTATION AND SPLICING - Various techniques for enhanced support of stream adaptation and splicing based on clean random access (CRA) pictures are described. Instead of using a flag in the slice header to indicate that a broken link picture is present, a distinct network abstraction layer (NAL) unit type can be used to indicate the presence of a broken link picture. In some implementations, a first distinct NAL unit type may be used to indicate the presence of a broken link picture with leading pictures, while a second distinct NAL unit type indicates the presence of a broken link picture without leading pictures. In some implementations, a third distinct NAL unit type may be used to indicate the presence of a broken link picture with decodable leading pictures. | 10-24-2013 |
| 20130279565 | VIDEO CODING - Methods and apparatus for video coding are disclosed, particularly for use in relation to video compression. Many commercially available video encoders support constant bit-rate encoding but not constant quality encoding. Aspects of the present invention are concerned with methods and apparatus for video coding, the methods involving the determination of bit-rates at which a constant bit-rate encoder may be operated such that segments of video can be chosen from files encoded at the bit-rates so-determined in order to produce an output bitstream in which the quality is nearly constant. Bit-stream segments may be chosen from a low bit-rate bitstream for easy-to-compress scenes, and from a high bit-rate bitstream for hard-to-compress scenes. | 10-24-2013 |
| 20130287091 | APPARATUS AND METHOD FOR MEDIA STREAMING - A system that incorporates teachings of the subject disclosure may include, for example, dividing a media content item into a plurality of media content segments, at each media content segment of the plurality of media content segments, applying motion estimation between at least two video frames of the media content segment to determine a content weight for the media content segment, determining a bit rate for the media content segment according to the determined content weight for the media content segment, and encoding the media content segment at the determined bit rates to generate a data stream for the media content segment, whereby a plurality of data streams for the plurality of media content segments of the media content are generated, and transmitting the plurality of data streams for the plurality of media content segments of the media content to the one or more media devices. Other embodiments are disclosed. | 10-31-2013 |
| 20130287092 | Systems and Methods for Adaptive Streaming with Augmented Video Stream Transitions - Systems and methods for adaptive streaming with augmented video stream transitions in accordance with embodiments of the invention are disclosed. In one embodiment of the invention, a network client includes memory containing a video decoder application, an image processing application, and a client application and a processor, wherein the video decoder application configures the processor to decode video data for display, wherein the image processor application configures the processor to render an image for display, wherein the client application configures the processor to receive a first stream of video data, play the first stream of video data, detect a change in streaming conditions, request a second stream of video data, render an image for display, receive the second stream of video data, and play the second stream of video data, and coordinates the display of the image between the first stream of video and the second video stream. | 10-31-2013 |
| 20130287093 | METHOD AND APPARATUS FOR VIDEO CODING - There is disclosed a method, apparatus and computer program product in which at least one view component of a first type and at least one view component of a second type are obtained. The order of the texture view component and the depth view component in an access unit is determined and at least one indication of the order is encoded. The coding of the view components is adapted on the basis of the order. There is also disclosed a method, apparatus and computer program product in which at least one encoded view component of a first type and at least one encoded view component of a second type are received. Also at least one encoded indication of the order of the view components is received. The at least one encoded indication is decoded and the decoding of the view components is adapted on the basis of the order. | 10-31-2013 |
| 20130287094 | METHOD AND DEVICE FOR ENCODING/DECODING IMAGE USING FEATURE VECTORS OF SURROUNDING BLOCKS - A video encoding apparatus, a decoding apparatus and method thereof by using feature vectors of at least one neighboring block are provided. In the video encoding apparatus, the decoding apparatus and the method, the feature vector is extracted from pixels of at least one neighboring block, and an optimal prediction mode represented by the feature vector is extracted with reference to a preset feature vector distribution of image blocks. The extracted optimal prediction mode is decided as a most probable mode (MPM) or an intra mode of a current block, and the current block is intra-predicted and encoded or decoded by using pixels of the at least one neighboring block adjacent to the current block. | 10-31-2013 |
| 20130287095 | METHOD, DEVICE AND TERMINAL FOR DECODING - Disclosed are a method, a device and a terminal for decoding, the method including: determining an expected power of the decoder according to the current remaining power and an expected decoding time length, determining a first average power of the decoder according to the accumulated decoding time length and the accumulated power consumption of the decoder from the moment it starts to work until the current moment; determining a second average power of the decoder according to the accumulated decoding time length and the accumulated power consumption in the process of decoding the latest preset number of image groups by the decoder; when the absolute value of the difference between the expected power and the second average power exceeds a preset threshold and the expected power is not equal to the first average power, determining the operation mode of the decoder according to the size relationship between the expected power and the first average power and decoding a data frame according to the determined operation mode. By using the present solution, the operation time of the decoder can be controlled. | 10-31-2013 |
| 20130294498 | VIDEO ENCODING SYSTEM, METHOD AND COMPUTER READABLE MEDIUM THEREOF - A video encoding system applied in a remote desktop system includes a capturing module, an encoding module and an estimating module. The capturing module is configured for capturing a plurality of screen frames of an electronic device at a capture rate. The encoding module is configured for encoding the screen frames captured by the capturing module at an encoding rate. The estimating module is configured for determining whether the current screen frame changes or not and then adjusting the encoding rate of the encoding module according to the estimating result. In this case, the encoding rate is equal to or less than the capture rate. The video encoding system can reduce system resource usage and energy consumption when the screen frame does not change. A video encoding method and a computer readable medium storing the method are also disclosed. | 11-07-2013 |
| 20130294499 | PARAMETER SET UPDATES IN VIDEO CODING - Techniques of this disclosure provide an indication of whether a parameter set update can occur in a portion of a bitstream. The indication may enable a video decoder to determine whether an update of a stored parameter set can occur without performing a content comparison between the stored parameter set and a new parameter set of the same type with the same identification value. A parameter set update includes storing a current parameter set with a given identification value to replace a previous parameter set of the same type and having the same identification value. When a parameter set update cannot occur, the video decoder may store and activate a single parameter set of a given type for the entire portion of the bitstream. When a parameter set update can occur, the video decoder may automatically update a stored parameter set, or may determine whether to update the stored parameter. | 11-07-2013 |
| 20130294500 | FULL RANDOM ACCESS FROM CLEAN RANDOM ACCESS PICTURES IN VIDEO CODING - Techniques of this disclosure provide an indication of whether performing random access from a particular access unit in a bitstream requires fetching of parameter sets from previous access units. A clean random access (CRA) picture can be positioned at any point within a coded video sequence and does not clean a decoded picture buffer (DPB) of a video decoder. In order to perform random access decoding from the CRA picture, a video decoder may need to fetch one or more parameter sets included in unavailable access units that precede the CRA picture. The techniques provide an indication, for each CRA picture, that indicates whether parameter sets included in previous access units are needed to perform random access from the picture. When no parameter sets from previous access units are needed for random access from a particular CRA picture, a video decoder may determine to perform random access from that picture. | 11-07-2013 |
| 20130294501 | Signaling Signed Band Offset Values for Sample Adaptive Offset (SAO) Filtering in Video Coding - A method for signaling sample adaptive offset (SAO) band offset syntax elements in a video encoder is provided that includes receiving a plurality of band offset syntax elements, entropy encoding an absolute value of a magnitude of each band offset syntax element in a compressed video bit stream, and entropy encoding a sign of each non-zero band offset syntax element in the compressed video bit stream following the absolute values of the magnitudes. | 11-07-2013 |
| 20130294503 | CHANNEL ADAPTIVE VIDEO TRANSMISSION SYSTEM FOR USE WITH LAYERED VIDEO CODING AND METHODS FOR USE THEREWITH - A video transmission system includes a transceiver module that transmits a video signal to a remote device over at least one communications channel wherein the video signal is transmitted as at least one separate video layer stream chosen from, an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A control module determines at least one channel characteristic of the at least one channel and chooses the at least one separate video layer stream based on the at least one channel characteristic of the at least one channel. | 11-07-2013 |
| 20130294504 | METHOD OF ADAPTIVE FRAME PREDICTION FOR MULTIVIEW VIDEO SEQUENCE CODING - A process and apparatus for digital compression of multiview video, supplied by additional data of scene depth. The method of coding is offered, including: each frame of the multiview video sequence, encoded again, determined according to the predefined order of coding, is represented as a collection of non-overlapped blocks, such that at least one already encoded frame is detected, corresponding to the given view and designated as reference, the synthesized frames for encoded and reference frames, differing that for each non-overlapped block of pixels of the encoded frame designated as an encoded block the spatial-combined block in the synthesized frame is determined, corresponding to the encoded frame, designated as the virtual block, for which spatial position of the block of pixels is determined in the synthesized frame corresponding to a reference frame. | 11-07-2013 |
| 20130294505 | VIDEO CODING AND DECODING DEVICES AND METHODS PRESERVING - The present invention relates to a video encoding device ( | 11-07-2013 |
| 20130301699 | APPARATUSES AND METHODS FOR ESTIMATING BITSTREAM BIT COUNTS - Examples of methods and apparatuses for estimating bit counts of a bitstream are described herein. An entropy encoder may include a bitstream encoding module and a bit count estimation module. The bitstream encoding module may be configured to encode a plurality of syntax elements according to a first encoding technique. The bit count estimation module may be configured to provide estimated bit counts for encoding the plurality of syntax elements according to a second encoding technique. In at least one embodiment, the bitstream encoding module may be further configured to encode the plurality of syntax elements based on the estimated bit counts. | 11-14-2013 |
| 20130301700 | VIDEO ENCODING DEVICE AND ENCODING METHOD THEREOF - A video encoding device includes a codec unit to encode first image data to be output as a bitstream and to generate a rate control signal according to a result of the encoding and a pre-processor to perform a decimation operation on second image data successive to the first data and to transmit the second image data to the codec unit. | 11-14-2013 |
| 20130301701 | ELECTRONIC DEVICE AND MOTION COMPENSATION METHOD - An electronic device for motion compensation is provided. The electronic device has a processing unit configured to perform a decoding program on a video bitstream to output decoding data, wherein the decoding data has a plurality of inter-prediction macroblocks, and the processing unit further generates a plurality of first pixel interpolation values according to the inter-prediction macroblocks which are smaller than a predetermined macroblock size. A motion compensation acceleration circuit is configured to generate a plurality of second pixel interpolation values according to the inter-prediction macroblocks which are larger than or equal to the predetermined macroblocks size, and generate a plurality of reconstructed macroblocks according to the first pixel interpolation values, the second pixel interpolation values, and a plurality of corresponding residue values. | 11-14-2013 |
| 20130301702 | SCALABLE VIDEO CODING WITH ENHANCED BASE LAYER - Disclosed is a method comprising: (a) receiving a layer 0 bitstream, the layer 0 bitstream including coding information for the layer 0 bitstream; (b) receiving a layer 1 bitstream, the layer 1 bitstream including coding information for the layer 1 bitstream; and (c) reconstructing the layer 0 bitstream using previously received information for another layer 0 bitstream and previously received information for another layer 1 bitstream. | 11-14-2013 |
| 20130301703 | METHOD OF CONTENT ADAPTIVE VIDEO ENCODING - A method of content adaptive encoding video comprising segmenting video content into segments based on predefined classifications or models. Based on the segment classifications, each segment is encoded with a different encoder chosen from a plurality of encoders. Each encoder is associated with a model. The chosen encoder is particularly suited to encoding the unique subject matter of the segment. The coded bit-stream for each segment includes information regarding which encoder was used to encode that segment. A matching decoder of a plurality of decoders is chosen using the information in the coded bitstream to decode each segment using a decoder suited for the classification or model of the segment. If scenes exist which do not fall in a predefined classification, or where classification is more difficult based on the scene content, these scenes are segmented, coded and decoded using a generic coder and decoder. | 11-14-2013 |
| 20130301704 | VIDEO CODING / DECODING WITH RE-ORIENTED TRANSFORMS AND SUB-BLOCK TRANSFORM SIZES - Techniques and tools for video coding/decoding with sub-block transform coding/decoding and re-oriented transforms are described. For example, a video encoder adaptively switches between 8×8, 8×4, and 4×8 DCTs when encoding 8×8 prediction residual blocks; a corresponding video decoder switches between 8×8, 8×4, and 4×8 inverse DCTs during decoding. The video encoder may determine the transform sizes as well as switching levels (e.g., frame, macroblock, or block) in a closed loop evaluation of the different transform sizes and switching levels. When a video encoder or decoder uses spatial extrapolation from pixel values in a causal neighborhood to predict pixel values of a block of pixels, the encoder/decoder can use a re-oriented transform to address non-stationarity of prediction residual values. | 11-14-2013 |
| 20130301705 | VIDEO-ENCODING METHOD AND APPARATUS FOR SAME AND VIDEO-DECODING METHOD AND APPARATUS FOR SAME USING A SELECTIVE SCAN MODE - Provided are encoding and decoding methods and apparatuses for a video by selectively determining and using a scan mode. The video encoding method includes: generating transformation coefficients by performing transformation based on a transformation unit to encode an image; determining a scan mode, from among a plurality of scan modes, indicating a scanning direction of the generated transformation coefficients, based on characteristics of the transformation coefficients; and determining and outputting an encoding order of the generated transformation coefficients based on the scanning direction of the determined scan mode. | 11-14-2013 |
| 20130308696 | Method and Apparatus for Sample Adaptive Offset Without Sign Coding - A method and apparatus for sample adaptive offset without sign coding. The method includes selecting an edge offset type for at least a portion of an image, classifying at least one pixel of at least the portion of the image into edge shape category, calculating an offset of the pixel, determining the offset is larger or smaller than a predetermined threshold, changing a sign of the offset based on the threshold determination; and performing entropy coding accounting for the sign of the offset and the value of the offset. | 11-21-2013 |
| 20130308697 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - Provided is an image processing apparatus, including: a first encoder section configured to encode some frames of image data, to thereby create first encoded data; a rate controlling section configured to control a bit rate of the first encoded data created by the first encoder section, to thereby create low-frame-rate encoded data having a first bit rate and second encoded data having a second bit rate, the second bit rate being different from the first bit rate; a second encoder section configured to encode the frames of the image data, the frames being other than the frames encoded by the first encoder section, to thereby create third encoded data having the second bit rate; and an integrating section configured to integrate the second encoded data created by the rate controlling section and the third encoded data created by the second encoder section, to thereby create high-frame-rate encoded data. | 11-21-2013 |
| 20130315296 | SYSTEMS AND METHODS FOR ADAPTIVE SELECTION OF VIDEO ENCODING RESOURCES - Various embodiments for facilitating the adaptive selection of encoding tools in a video processing device. One embodiment, among others, is a method implemented in a video processing device for adaptively selecting video encoding tools. The method comprises receiving video data comprising a plurality of frames, determining a real-time available bandwidth associated with a dynamic random access memory (DRAM), and generating a feedback signal based on the determined real-time available bandwidth. An encoding resource is selected for processing at least a portion of the plurality of frames based on the feedback signal. | 11-28-2013 |
| 20130315297 | MOVING PICTURE CODING METHOD, MOVING PICTURE DECODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding method includes: performing context adaptive binary arithmetic coding in which a variable probability value is used, on first information among multiple types of sample adaptive offset (SAO) information used for SAO that is a process of assigning an offset value to a pixel value of a pixel included in an image generated by coding the input image; and continuously performing bypass arithmetic coding in which a fixed probability value is used, on second information and third information among the multiple types of the SAO information, wherein the coded second and third information are placed after the coded first information in the bit stream. | 11-28-2013 |
| 20130315298 | ADAPTIVE DATA TRANSMISSION RATE CONTROL FOR A WIRELESS DISPLAY DEVICE - A method, a computer readable medium and an apparatus to adaptively control a data transmission rate of a wireless display device. The method includes determining a current data transmission rate capacity of a wireless channel; and controlling a data transmission rate of a wireless transmission device based on the current data transmission rate capacity. | 11-28-2013 |
| 20130315299 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING VARIABLE SIZED MACROBLOCKS - A video encoding apparatus includes a candidate block type configuration unit for configuring block type candidates for encoding an image by using variable sized macroblocks; a video encoder for encoding an input image for each block type candidate; and a block type determiner for determining a block type based on encoding costs by the block type candidate, and generating a bitstream including image data encoded by the determined block type and information for the determined block type. Determining the block type to match the image characteristics enables combinations of diverse modes such as a large block and macroblock size, a minimum subblock size, available divisional block type, prediction mode type within a macroblock, and so on to achieve more effective encoding and decoding of high resolution images. | 11-28-2013 |
| 20130315300 | ENCODING METHOD AND DEVICE OF VIDEO USING DATA UNIT OF HIERARCHICAL STRUCTURE, AND DECODING METHOD AND DEVICE THEREOF - Provided are a method and a device for encoding a video by using a data unit of a hierarchical structure, and a method and a device for decoding the same. A video encoding device includes: a hierarchical encoder configured to encode a picture of a video based on a data unit of a hierarchical structure; and an entropy coder configured to determine a context model used for entropy coding of a symbol based on hierarchical information of a data unit to which the symbol of the encoded picture belongs, and to entropy encode the symbol using the determined context model. | 11-28-2013 |
| 20130322516 | SYSTEMS AND METHODS FOR GENERATING MULTIPLE BITRATE STREAMS USING A SINGLE ENCODING ENGINE - Various embodiments are disclosed for generating multiple output bitrates of a video processing device for encoding video. The method comprises receiving video data comprising a plurality of frames encoding, by a single encoding engine, the received video data to generate a plurality of bitstreams corresponding to different bitrates by sharing such coding decisions as which motion vectors to retrieve, intra-mode prediction, and intra and inter-mode decisions. The method further comprises determining an available network bandwidth for transmitting encoded video and transmitting one or more of the plurality of bitstreams generated by the single encoding engine based on the determined available bandwidth. | 12-05-2013 |
| 20130322517 | Systems and Methods for the Reuse of Encoding Information in Encoding Alternative Streams of Video Data - Systems and methods for reusing encoding information in the encoding of alternative streams of video data in accordance with embodiments of the invention are disclosed. In one embodiment of the invention, encoding multimedia content for use in adaptive streaming systems, includes selecting a first encoding level from a plurality of encoding levels using a media server, determining encoding information for a first stream of video data using the first encoding level and the media server, encoding the first stream of video data using the media server, where the first stream of video data includes a first resolution and a first bitrate, selecting a second encoding level from the plurality of encoding levels using the media server, and encoding a second stream of video data using the encoding information and the media server, where the second stream of video data includes a second resolution and a second bitrate. | 12-05-2013 |
| 20130322518 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes: performing Sample SAO processing on Y signal, Cb signal, and Cr signal which are included in a target block; performing arithmetic coding on a first flag indicating whether or not an SAO parameter, which indicates details of the SAO processing, of the target block is identical to an SAO parameter for a left neighboring block immediately left of the target block; and performing arithmetic coding on the SAO parameter for the target block, when the SAO parameter for the target block is different from the SAO parameter for the left neighboring block. In the arithmetic coding on the first flag, a single context is used to perform the arithmetic coding on the first flag for the luminance signal, the chrominance Cb signal, and the chrominance Cr signal. | 12-05-2013 |
| 20130322519 | VIDEO PROCESSING METHOD USING ADAPTIVE WEIGHTED PREDICTION - The present disclosure provides a video processing method using adaptive weighted prediction. The video processing method includes dividing a reference frame into a plurality of reference divisional areas, dividing a current frame into a plurality of current divisional areas, calculating absolute values of differences between respective average brightness values of the plural reference divisional areas and respective average brightness values of the plural current divisional areas, calculating a standard deviation of the absolute values, and implementing adaptive weighted prediction with regard to the current frame when the standard deviation exceeds a predetermined critical value. Thus, the video processing method can more quickly process rapid variation in brightness of an image with less operation when the rapid variation in brightness occurs due to flash, fade-in, fade-out, etc. | 12-05-2013 |
| 20130322520 | MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, AND MOVING PICTURE DECODING APPARATUS - The moving picture coding method for coding an input image includes: converting a value of a first parameter into a first binary signal, the first parameter identifying a type of a sample offset process to be applied to a reconstructed image corresponding to the input image; and coding at least a portion of the first binary signal through bypass arithmetic coding using a fixed probability. | 12-05-2013 |
| 20130322521 | AUTOMATIC TEMPORAL LAYER BIT ALLOCATION - Disclosed herein are techniques and computer readable media containing instructions arranged to determine a bit allocation for a temporal base layer and at least one temporal enhancement layer. The techniques are enhanced to yield improved reproduced quality for the case where both a temporal base layer and at least one temporal enhancement layer is being used. An exemplary method for determining a bit allocation to one base layer includes initializing a bit allocation between the base layer and the at least one enhancement layer, determining a quality difference between the base layer and the at least one enhancement layer, expressed, for example, in the Quantizer Parameter of the last picture of each layer within a GOP, and determining a new bit allocation between the base layer and the at least one enhancement layer based on the quality difference and at least one constant factor. | 12-05-2013 |
| 20130322522 | COMPACT CUMULATIVE BIT CURVES - Embodiments of the present invention provide a compact representation of a cumulative bit curve formed from piece-wise straight line approximations between upper and lower bounds about an actual cumulative bit curve (CBC). In one embodiment the lower bounds are found by applying a constraint such that if a delivery rate was to be calculated using the count at the lower bound it would result in a delivery rate which was greater than the delivery rate that would be calculated using the actual CBC data by a particular amount, for example 10%. The actual CBC data is then used as an upper bound. As a result, the approximated CBC will lie for each GoP between the actual CBC value and the lower bound, with the result that one can be certain that any data rate that is calculated using the approximation will be at least as high as a data rate that is calculated using the actual CBC data. In terms of line-fitting algorithms that are used, several different algorithms may be used of differing complexities, with the intention of trying to minimise the number of end-points required of within the piecewise approximation. | 12-05-2013 |
| 20130322523 | METHOD AND APPARATUS FOR REDUCTION OF IN-LOOP FILTER BUFFER - A method and apparatus for in-loop processing of reconstructed video are disclosed. The method and apparatus configure the in-loop processing so that the processing requires no pixel or reduced pixels from other side of a virtual boundary. When the in-loop processing of the to-be-processed pixel requires a pixel from the other side of the virtual boundary, the pixel from the other side of the virtual boundary is replaced by a replacement pixel. The in-loop processing can also be configured to skip the pixel when the processing requires a pixel from other side of the virtual boundary. The in-loop processing can also be configured to change ALF filter shape or filter size when the in-loop processing requires a pixel from other side of the virtual boundary. A filtered output can be combined linearly or nonlinearly with the to-be-processed pixel to generate a final filter output. | 12-05-2013 |
| 20130329781 | TECHNIQUES FOR ADAPTIVE VIDEO STREAMING - A vide coding server may code a common video sequence into a plurality of coded data streams, each coded data stream representing the video sequence coded using coding parameters tailored for a respective transmission bit rate. The coding may cause a set of transmission units from among the coded data streams to include coded video data from a common point of the video sequence, and a first coded frame of each transmission unit of the set to be a synchronization frame. A manifest file may be built representing an index of transmission units of the respective coded data streams. The coded data streams and manifest file may be stored by the server for delivery to a client device. During download and decode, the chunks may be decoded efficiently even when switching among streams because the first frame in each chunk is a synchronization frame. | 12-12-2013 |
| 20130329782 | ADAPTIVE UPSAMPLING FILTERS - In one embodiment, a video coder for coding video data includes a processor and a memory. The processor selects a filter set from a multiple filter sets for upsampling reference layer video data based at least on a prediction operation mode for enhanced layer video data and upsamples the reference layer video data using the selected filter set. Some of the multiple filter sets have some different filter characteristics from one another, and the upsampled reference layer video data has the same spatial resolution as the enhanced layer video data. The processor further codes the enhanced layer video data based at least on the upsampled reference layer video data and the prediction operation mode. The memory stores the upsampled reference layer video data. | 12-12-2013 |
| 20130329783 | IMAGE PROCESSING APPARATUS AND METHOD - The present technology relates to an image processing apparatus and method that are capable of enhancing encoding efficiency while suppressing a decrease in the efficiency of encoding processing. The image processing apparatus includes an encoding mode setter that sets, in units of coding units having a hierarchical structure, whether a non-compression mode is to be selected as an encoding mode for encoding image data, the non-compression mode being an encoding mode in which the image data is output as encoded data, and an encoder that encodes the image data in units of the coding units in accordance with a mode set by the encoding mode setter. The present disclosure can be applied to, for example, an image processing apparatus. | 12-12-2013 |
| 20130329784 | Method and Apparatus for Line Buffer Reduction for Video Processing - A method and apparatus of line buffer reduction for context adaptive entropy processing are disclosed. The context formation for context adaptive entropy processing depends on block information associated with one or more neighboring Determining context formation for processing a blocks. When the neighboring block is on a different current syntax element of a current block in a region, side of a region boundary from the current block, the wherein the context formation depends on block block information is replaced by replacement block information associated with a neighboring block information to reduce or remove line buffer requirement for storing the block information of neighboring blocks on the other side of the region boundaries from the current block. The context adaptive entropy Replacing the block information associated with a processing is CABAC encoding, CABAC decoding, neighboring block by replacement block information if CAVLC encoding, or CAVLC decoding. | 12-12-2013 |
| 20130336380 | Power Optimization for Compression in Wireless Transmissions - An exemplary embodiment comprises a compression regulator component configured to select a compression rate that will minimize the total power value used by the wireless device in wirelessly transmitting a data stream over a current network channel, and a compression module configured to compress the data stream at the compression rate selected. | 12-19-2013 |
| 20130336381 | VIDEO TRANSMISSION SYSTEM AND TRANSMITTING DEVICE AND RECEIVING DEVICE THEREOF - An image transmission system is provided. The image transmission system includes a transmitting device and a receiving device which are mutually connected via a number of communication links. The transmitting device receives an original image data, and obtains a region of interest (ROI) image data from the original image data in response to an ROI information. The transmitting device further provides two independent process channels respectively processing the original image data and the ROI image data, and respectively outputting the processed original image data and the processed ROI image data via the communication links. The receiving device receives and combines the processed original image data and the ROI image data to obtain a recovered frame image data. | 12-19-2013 |
| 20130336382 | GROUPING OF BYPASS-CODED BINS FOR SAO SYNTAX ELEMENTS - A video encoder generates a sequence of sample adaptive offset (SAO) syntax elements for a coding tree block. The SAO syntax elements include regular context-adaptive binary arithmetic coding (CABAC) coded bins for a color component and bypass-coded bins for the color component. None of the bypass-coded bins is between two of the regular CABAC-coded bins in the sequence. The video encoder uses regular CABAC to encode the regular CABAC-coded bins and uses bypass coding to encode the bypass-coded bins. The video encoder outputs the SAO syntax elements in a bitstream. A video decoder receives the bitstream, uses regular CABAC to decode the regular CABAC-coded bins, uses bypass coding to decode the bypass-coded bins, and modifies a reconstructed picture based on the SAO syntax elements. | 12-19-2013 |
| 20130336383 | DECOUPLING ENHANCEMENTS IN SAMPLE ADAPTIVE OFFSET (SAO) FOR HIGH EFFICIENCY VIDEO ENCODER (HEVC) - An encoder/decoder is described using enhanced signaling mechanisms SAO parameters. The various parameters are signaled in various ways according to different embodiments of the invention. In a first embodiment (embodiment A), SAO on/off is decoupled form SAO type coding, with SAO on/off flags being jointly encoded for all color components. The second embodiment (embodiment B), is similar to embodiment A, but modified for application to JCTVC-J0268. In a third embodiment separate signaling is provided for SAO on/off, SAO types BO and EO, and for BO and EO side information (classes or band position). Each of these enhanced SAO signaling mechanisms provide enhanced coding efficiency. | 12-19-2013 |
| 20130336384 | METHOD AND APPARATUS FOR EFFICIENT SLICE HEADER PROCESSING - A method, apparatus, article of manufacture, and a memory structure for encoding or decoding a sequence comprising a plurality of pictures, each of the plurality of pictures partitionable into one or more slices, each of the one or more slices processed at least in part according to a slice header. In one embodiment, all the relative syntax and function calls under the condition of slice type equal to P or B are grouped together, and syntax describing the initial value for a quantization parameter to be used in coding blocks of data and deblocking related syntax are separately grouped. | 12-19-2013 |
| 20130336386 | SAMPLE ADAPTIVE OFFSET (SAO) CODING - A video coder according to the techniques of the present disclosure may code a prefix value and code a suffix value, such that the combination of the suffix value and the prefix value identify an offset value determined for a sample adaptive offset filtering (SAO) operation. | 12-19-2013 |
| 20130336387 | VIDEO ENCODING DEVICE, VIDEO ENCODING METHOD AND VIDEO ENCODING PROGRAM - A video encoding device, which uses intra encoding and inter encoding with motion compensation with respect to an input video signal, includes a determination unit which determines whether the input video signal to be encoded corresponds to a stationary region, a region having minute motion, or a region having normal motion, a first encoding unit which performs inter encoding of a motion vector (0, 0) with respect to a region determined as a stationary region by the determination unit, a second encoding unit which performs motion search and inter encoding in a limited search range with respect to a region determined as a region having minute motion by the determination unit, and a third encoding unit which performs motion search and inter encoding in a normal search range with respect to a region determined as a region having normal motion by the determination unit. | 12-19-2013 |
| 20130343447 | Adaptive loop filter (ALF) padding in accordance with video coding - Adaptive loop filter (ALF) padding in accordance with video coding. Various types of video processing are performed including performing virtual padding. When a filter coefficients collocated pixel is not available, that pixel may be replaced using an available pixel within a given location within a filter to process a number of pixels. For example, an available pixel located within the center of such a filter (e.g., which may be a cross shaped filter including a predetermined number of pixels, such as 18 pixels in one instance) may be used to replace those pixel locations which are not available in accordance with such virtual padding. With respect to the implementation of such an adaptive loop filter (ALF), such an ALF may be implemented to process a signal output from a de-blocking filter, from a sample adaptive offset (SAO) filter, and/or from a combined de-blocking/SAO filter in various implementations. | 12-26-2013 |
| 20140003487 | VIDEO CODING SYSTEM WITH TEMPORAL LAYERS AND METHOD OF OPERATION THEREOF | 01-02-2014 |
| 20140003488 | POSITION-BASED CONTEXT SELECTION FOR GREATER-THAN-ONE FLAG DECODING AND ENCODING | 01-02-2014 |
| 20140003489 | METHOD AND APPARATUS FOR VIDEO CODING | 01-02-2014 |
| 20140003490 | WIRELESS DISPLAY SOURCE DEVICE AND SINK DEVICE | 01-02-2014 |
| 20140003491 | VIDEO PARAMETER SET FOR HEVC AND EXTENSIONS | 01-02-2014 |
| 20140003492 | VIDEO PARAMETER SET FOR HEVC AND EXTENSIONS | 01-02-2014 |
| 20140003493 | VIDEO PARAMETER SET FOR HEVC AND EXTENSIONS | 01-02-2014 |
| 20140003494 | DEVICE, SYSTEM AND METHOD OF VIDEO ENCODING | 01-02-2014 |
| 20140003495 | Method and Apparatus of Scalable Video Coding | 01-02-2014 |
| 20140003496 | IMAGE PROCESSING APPARATUS AND METHOD | 01-02-2014 |
| 20140010277 | SUPPLEMENTAL ENHANCEMENT INFORMATION (SEI) MESSAGES HAVING A FIXED-LENGTH CODED VIDEO PARAMETER SET (VPS) ID - Systems, methods, and devices are disclosed that code a supplemental enhancement information (SEI) message. In some examples, the SEI message may contain an identifier of an active video parameter set (VPS). In some examples, the identifier may be fixed-length coded. | 01-09-2014 |
| 20140010280 | INTRA MODE EXTENSIONS FOR DIFFERENCE DOMAIN INTRA PREDICTION - An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores difference video information associated with a difference video layer of pixel information derived from a difference between an enhancement layer and a corresponding base layer of the video information. The processor determines a DC prediction value for a video unit associated with the difference video layer while refraining from using pixel information from a neighboring area of the video unit, wherein the DC prediction value is equal to zero or is offset by an offset value. The DC prediction value is a prediction value used in intra prediction based at least on an average of neighboring video units of the video unit. The processor further determines a value of the video unit based at least in part on the DC prediction value. | 01-09-2014 |
| 20140010281 | PICTURE OUTPUT MANAGEMENT IN VIDEO APPLICATIONS WITH FIXED PICTURE RATE - In one embodiment, a video bitstream is received at a video processing device. The bitstream may be decoded by the video processing device to produce a first picture data and a second picture data. The decoded first picture data and decoded second picture data may be stored in a decoded picture buffer. The first decoded picture data has a corresponding first picture rate and the second decoded picture data has a corresponding second picture rate. Auxiliary information corresponding to the bitstream may be received for the first picture data and second picture data at the video processing device. The decoded first picture data stored in the decoded picture buffer may be processed by the video processing device based on the received auxiliary information. The decoded first picture data may be processed based on the auxiliary information to produce a version of the first picture data at the second picture rate, the second picture rate being different from the first picture rate. | 01-09-2014 |
| 20140010282 | POWER AWARE VIDEO DECODING AND STREAMING - Methods and systems are disclosed for a mobile device to decode video based on available power and/or energy. For example, the mobile device may receive a media description file (MDF) from for a video stream from a video server. The MDF may include complexity information associated with a plurality of video segments. The complexity information may be related to the amount of processing power to be utilized for decoding the segment at the mobile device. The mobile device may determine at least one power metric for the mobile device. The mobile device may determine a first complexity level to be requested for a first video segment based on the complexity information from the MDF and the power metric. The mobile device may dynamically alter the decoding process to save energy based on the detected power/energy level. | 01-09-2014 |
| 20140010283 | ADAPTIVE IMAGE ENCODING DEVICE AND METHOD - Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters. | 01-09-2014 |
| 20140010285 | CODING STRUCTURE - Apparatuses and techniques relating to encoding a video are provided. An encoding device includes a motion coding module configured to determine a coding block level for processing an image data, and further configured to determine a block formation for a motion coding of the image data according to the coding block level; and a texture coding module configured to determine a block size for a texture coding of the image data according to the block formation to thereby generate a coded bit stream. | 01-09-2014 |
| 20140010286 | METHOD AND APPARATUS FOR THE ADAPTATION OF MULTIMEDIA CONTENT IN TELECOMMUNICATION NETWORKS - An apparatus for adapting media content in one or more networks includes a controller module, one or more network interface modules, and one or more protocol interface modules coupled to the controller module. The apparatus also includes a script interpretation module coupled to the controller module and one or more media adaptation modules coupled to the controller module. The one or more media adaptation modules may support audio, video, or meta data. The apparatus further includes a management interface module coupled to the controller module. Media may be received at the apparatus as streaming media and be provided from the apparatus as a download or a progressive download. Additionally, media may be received at the apparatus as a download or progressive download and be provided from the apparatus as streaming media. | 01-09-2014 |
| 20140010287 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, AND IMAGE DECODING APPARATUS - An image coding method includes: deriving a candidate for a motion vector predictor from a neighboring motion vector; adding the candidate to a list; selecting a motion vector predictor from the list; coding a current block; and coding a current motion vector. In the deriving, the candidate is derived according to a first derivation scheme when each of a current reference picture and a neighboring reference picture is determined to be a long-term reference picture, and the candidate is derived according to a second derivation scheme when each of a current reference picture and a neighboring reference picture is determined to be a short-term reference picture. | 01-09-2014 |
| 20140016693 | REAL-TIME VIDEO CODING SYSTEM OF MULTIPLE TEMPORALLY SCALED VIDEO AND OF MULTIPLE PROFILE AND STANDARDS BASED ON SHARED VIDEO CODING INFORMATION - In one embodiment, a method comprising receiving at a single encoding engine an input video stream according to a first version of a video characteristics, such as frame rate, profile and level, and coding standard, and generating by the single encoding engine, in parallel, a plurality of streams comprising a first encoded stream according to a first version of the video characteristic and a second encoded stream according to a second version of the video characteristic, the second encoded stream generated based on video coding information used to generate the first encoded stream. | 01-16-2014 |
| 20140016694 | HYBRID VIDEO CODING TECHNIQUES - Disclosed are techniques for encoding and decoding layered video where the non-temporal enhancement layers and their respective temporal enhancement layers, comply with a scalable video coding standard or technology, and the base layer and its respective temporal enhancement layers does not comply with the same scalable video coding standard or technology. A Video Parameter Set that comprises information about the relationship of layers includes a syntax element indicative of the derivation mechanism for a temporal layer associated with a NAL unit coded in a first coding technology, for example HEVC. For one value of the syntax element, the derivation mechanism is to set the temporal layer of the base layer NAL unit to the value coded in the header of the encapsulating NAL unit, which can be an HEVC NAL unit. For another value, the derivation mechanism is to imply the value of temporal base layer for the first NAL unit. | 01-16-2014 |
| 20140023136 | IN-LOOP FILTERING METHOD AND APPARATUS FOR SAME - According to the present invention, an image-encoding method comprises the following steps: receiving image information; generating a restored block for the current block based on the image information; and generating a finally restored block for the current block by applying an in-loop filter to the restored block on the basis of the image information. According to the present invention, image-encoding/decoding efficiency may be improved. | 01-23-2014 |
| 20140023137 | TECHNIQUES FOR CONTEXT-ADAPTIVE BINARY DATA ARITHMETIC CODING (CABAC) DECODING - A method for decoding of transform coefficients. The method comprises decoding consecutive bits of an input compressed bitstream; computing a first symbol value using a number of decoded bits; returning the first symbol value if a total number of decoded bits is less than a specified bit count; computing a second symbol value if the total number of decoded bits equals the specified bit count; and returning the second symbol value. | 01-23-2014 |
| 20140029663 | ENCODING TECHNIQUES FOR BANDING REDUCTION - Video encoders often produce banding artifacts on areas with smooth gradients and low levels of detail/noise. In this disclosure, a video encoding system identifies the banded areas and adjusts coding parameters accordingly. The video coder may include a pre-coding banding detector and a post-coding banding detector. The pre-coding detector may identify regions in the input picture with smooth gradients that are likely to have banding artifacts after encoding. The post-coding detector may identify regions in the reconstructed picture with visible banding. Usage of pre-coding detector and/or post-coding detector depends on how an encoder operates. In a single-pass encoding or during the first pass of a multi-pass encoding, the pre-coding detection maps are used. During picture re-encoding or during later passes of a multi-pass encoding, the post-coding detector maps are used. | 01-30-2014 |
| 20140036991 | Method and Apparatus for Sample Adaptive Offset in a Video Decoder - A method and apparatus for SAO (sample adaptive offset) processing in a video decoder are disclosed. Embodiments according to the present invention reduce the required line buffer associated with the SAO processing. According to one embodiment, tri-level comparison results for one deblocked pixel row or column of the image unit are determined according to SAO type of the deblocked pixel row or column. The tri-level comparison results are stored in a buffer and the tri-level comparison results are read back from the buffer for SAO processing of the subsequent row or column from a subsequent image unit. The comparison results correspond to “larger”, “equal” and “smaller” states. The comparison results can be stored more efficiently. | 02-06-2014 |
| 20140036992 | Method and Apparatus for Video Processing Incorporating Deblocking and Sample Adaptive Offset - A method and apparatus for applying DF processing and SAO processing to reconstructed video data are disclosed. The DF processing is applied to a current access element of reconstructed video data to generate DF output data and the deblocking status is determined while applying the DF processing. Status-dependent SAO processing is applied to one or more pixels of the DF output data according to the deblocking status. The status-dependent SAO processing comprises SAO processing, partial SAO processing, and no SAO processing. The SAO starting time for SAO processing is between the DF-output starting time and ending time for the current block. The DF starting time of a next block can be earlier than the SAO ending time of the current block by a period oft, where t is smaller than time difference between the DF-output starting time and the DF starting time of the next block. | 02-06-2014 |
| 20140036993 | ADAPTIVE VIDEO TRANSCODING METHOD AND SYSTEM - Disclosed is an adaptive video transcoding system including: a video transcoding device for calculating a minimum required compression rate required by a measured streamable bandwidth, selecting, as a transcoding encoding option, each of encoding options making up an encoding option combination with the lowest CPU usage rate of when at least one encoding option, from an encoding option combination having a greater compression rate of when at least one encoding option is combined and encoded, than the minimum required compression rate, is combined and encoded, and using the selected transcoding encoding option to transcode and transmit the video contents to a user terminal; and a user terminal for receiving and displaying the video contents transcoded according to the transcoding encoding option from the video transcoding device. | 02-06-2014 |
| 20140044161 | ADATIVE UP-SAMPLING FILTER FOR SCALABLE VIDEO CODING - Methods and systems for video image coding are provided. Sets of filters may be selected and applied to video information at least partially based on the type of inter layer prediction implemented in coding the video information. Different filters, or filter sets, may be used for inter layer intra prediction, difference domain intra prediction, and/or difference domain inter prediction. Filter selection information may be embedded in the video bit stream. | 02-13-2014 |
| 20140044162 | ADAPTIVE INFERENCE MODE INFORMATION DERIVATION IN SCALABLE VIDEO CODING - Systems and methods for determining information about an enhancement layer of digital video based on information included in a base layer of digital video are described. In one innovative aspect, an apparatus for coding digital video is provided. The apparatus includes a memory for storing a base layer of digital video information and an enhancement layer of digital video information. The apparatus determines a syntax element value for a portion of the enhancement layer based on a syntax element value for a corresponding portion of the base layer. Decoding devices and methods as well as corresponding encoding devices and methods are described. | 02-13-2014 |
| 20140044163 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method of decoding, on a per-block basis, a coded image included in a bitstream, includes: performing arithmetic decoding on a current block to be decoded; determining whether or not the current block is at the end of a slice; determining, when it is determined that the current block is not at the end of the slice, whether or not the current block is at the end of a sub-stream which is a structural unit of the image that is different from the slice; and performing arithmetic decoding on a sub-last bit and performing arithmetic decoding termination, when it is determined that the current block is at the end of the sub-stream. | 02-13-2014 |
| 20140064358 | DECODING METHOD FOR DECODING AN INCOMING BITSTREAM AND METHOD FOR PERFORMING THE SAME - There is disclosed a decoding method for decoding an incoming bitstream entropy-encoded according to an encoding method based on either of arithmetic encoding algorithm and non-arithmetic encoding algorithm, the incoming bitstream including syntax elements. The decoding method includes a first converting step of converting the incoming bitstream into an intermediate bitstream according to the encoding method, the first converting being capable of being omitted, a buffering step of selecting, according to the encoding method, either the intermediate bitstream or the incoming bitstream to store the selected bitstream onto a memory, and a second converting step of reading the selected bitstream from the memory to convert the read bitstream into syntax elements, the read bitstream being either the intermediate bitstream or the incoming bitstream. | 03-06-2014 |
| 20140064359 | INTRA PREDICTION MOST PROBABLE MODE ORDER IMPROVEMENT FOR SCALABLE VIDEO CODING - An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video information associated with a reference layer and a corresponding enhancement layer. The processor receives a mode list associated with the enhancement layer, the mode list comprising three entities, each entity identifying a different mode for determining a value of a video unit located at a position within the enhancement layer. The processor changes the mode list when a mode associated with a co-located video unit in the reference layer is not stored as the first entity in the mode list. The co-located video unit is located at a position in the reference layer corresponding to the position of the video unit in the enhancement layer. | 03-06-2014 |
| 20140064360 | INTRA PREDICTION IMPROVEMENTS FOR SCALABLE VIDEO CODING - An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video information associated with a reference layer and a corresponding enhancement layer. The processor determines a value of a video unit positioned at a position within the enhancement layer based at least in part on an intra prediction value weighted by a first weighting factor, wherein the intra prediction value is determined based on at least one additional video unit in the enhancement layer, and a value of a co-located video unit in the reference layer weighted by a second weighting factor, wherein the co-located video unit is located at a position in the reference layer corresponding to the position of the video unit in the enhancement layer. In some embodiments, the at least one of the first and second weighting factors is between 0 and 1. | 03-06-2014 |
| 20140072029 | ADAPTIVE SCALER SWITCHING - An adaptive scaler switching system may implement multiple scalers including both a software scaler and a hardware scaler, and a controller that may manage the switch between scalers by considering the real-time constraints of the system and the available system resources. Information about the availability of system resources may be received in real-time, for example the controller may receive information about the system thermal status, the timing requirements for processing the video data, the quality of the scaled data, and any other relevant system statistics that may affect the scaler switch decision. According to an embodiment, the system may maintain statistics in a table, and update the table information as necessary. | 03-13-2014 |
| 20140072030 | Method and System for Constraining Slice Header Processing Overhead in Video Coding - A method for encoding a picture of a video sequence in a bit stream that constrains slice header processing overhead is provided. The method includes computing a maximum slice rate for the video sequence, computing a maximum number of slices for the picture based on the maximum slice rate, and encoding the picture wherein a number of slices used to encode the picture is enforced to be no more than the maximum number of slices. | 03-13-2014 |
| 20140072031 | Reference Picture Lists Modification - Systems, methods, and instrumentalities are disclosed relating to modifications to reference picture lists used for multiple layer video coding. A bitstream that may include a reference picture list of a slice may be received. An indication to reposition a reference picture within the reference picture list from a first position to a second position may be received. An indication to insert a reference picture within the reference picture list at a position may be received. The reference picture may be repositioned and/or inserted in the reference picture list in response to receiving the indication. A reference picture previously associated with the position may be shifted in the reference picture list according to the indication to reposition and/or insert the reference picture, although an indication to reposition the reference picture previously associated with the position may not be received. The slice may be decoded using the reference picture list. | 03-13-2014 |
| 20140072032 | Adaptive Bitrate Management for Streaming Media Over Packet Networks - A method including receiving a receiver report from a terminal; estimating one or more network conditions of a media network based at least in part on the receiver report; determining an optimal session bitrate based on the estimated one or more network conditions; and providing media data to the terminal based on the optimal session bitrate. | 03-13-2014 |
| 20140072033 | Method and Apparatus of Scalable Video Coding - A method and apparatus for scalable video coding are disclosed, wherein the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein the EL has higher spatial resolution or better video quality than the BL. According to embodiments of the present invention, information from the base layer is exploited for coding the enhancement layer. The information coding for the enhancement layer includes CU structure, motion information, motion information, MVP/merge candidates, intra prediction mode, residual quadtree information, texture information, residual information, context adaptive entropy coding, Adaptive Lop Filter (ALF), Sample Adaptive Offset (SAO), and deblocking filter. | 03-13-2014 |
| 20140079114 | NOVEL USER SENSITIVE INFORMATION ADAPTIVE VIDEO TRANSCODING FRAMEWORK - A video system includes a sensitive-information generator to generate a definition of sensitive information parts (SIP) areas. The video system also includes a transcoder to transcode the SIP areas at a higher bit rate than non-SIP areas in the frames based on bandwidth available for transmitting the transcoded frames. The SIP areas are generated statically or dynamically. The video system adapts to various network conditions and utilizes the bandwidth efficiently to deliver the sensitive information of high quality and to enhance the user experience. | 03-20-2014 |
| 20140079115 | ENCODING AND DECODING VIDEO SEQUENCES COMPRISING REFERENCE PICTURE SETS - A method of encoding a video sequence comprising Reference Picture Sets (RPSs) is provided. The method comprises arranging the RPSs in transmission order in a data structure, such as a Sequence Parameter Set (SPS), determining whether explicit RPS transmission is used for an RPS of a current picture of the video sequence, and encoding information indicating an RPS comprised in the data structure to be used for predicting the RPS of the current picture, such as delta_idx_minus1, only if explicit RPS transmission is used. By transmitting delta_idx_minus1 only if explicit RPS transmission is used, and interpreting delta_idx_minus1 to be equal to zero otherwise, a reduced bitrate is achieved. Further, a method of decoding a video sequence comprising RPSs, corresponding computer programs and computer program products, as well as corresponding encoders and decoders are provided. | 03-20-2014 |
| 20140079116 | INDICATION OF INTERLACED VIDEO DATA FOR VIDEO CODING - This disclosure proposes techniques for encoding and video data. The techniques of the disclosure receiving a first indication that indicates whether all pictures in received video data are progressive frames coded as frame pictures. If a video decoder is unable to decode progressive frames, the video data may be rejected based on the first indication. | 03-20-2014 |
| 20140086303 | BITSTREAM CONFORMANCE TEST IN VIDEO CODING - A device performs a decoding process as part of a bitstream conformance test. As part of the decoding process, the device performs a bitstream extraction process to extract, from a bitstream, an operation point representation of an operation point defined by a target set of layer identifiers and a target highest temporal identifier. The target set of layer identifiers contains values of layer identifier syntax elements present in the operation point representation, the target set of layer identifiers being a subset of values of layer identifier syntax elements of the bitstream. The target highest temporal identifier is equal to a greatest temporal identifier present in the operation point representation, the target highest temporal identifier being less than or equal to a greatest temporal identifier present in the bitstream. The device decodes network abstraction layer (NAL) units of the operation point representation. | 03-27-2014 |
| 20140086304 | Histogram Segmentation Based Local Adaptive Filter for Video Encoding and Decoding - Reconstructed picture quality for a video codec system may be improved by categorizing reconstructed pixels into different histogram bins with histogram segmentation and then applying different filters on different bins. Histogram segmentation may be performed by averagely dividing the histogram into M bins or adaptively dividing the histogram into N bins based on the histogram characteristics. Here M and N may be a predefined, fixed, non-negative integer value or an adaptively generated value at encoder side and may be sent to decoder through the coded bitstream. | 03-27-2014 |
| 20140086305 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method for decoding a bitstream including a coded signal resulting from coding tiles and slices into which an image is partitioned, the method including decoding the coded signal, wherein each of the slices is either a normal slice having, in a header, information used for an other slice or a dependent slice which is decoded using information included in a slice header of another slice, and when the normal slice starts from a position other than a beginning of a first tile, a second tile coded next to the first tile does not start from the dependent slice. | 03-27-2014 |
| 20140086306 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method for decoding a bitstream including a coded signal resulting from coding slices into which an image is partitioned and each of which includes coding units, includes decoding the coded signal, wherein each of the slices is either a normal slice having, in a slice header, information used for another slice or a dependent slice which is decoded using information included in a slice header of another slice, the image includes rows each of which includes coding units, and when the normal slice starts at a position other than the beginning of the first row, the second row immediately following the first row does not start with the dependent slice. | 03-27-2014 |
| 20140086307 | CONTEXT DERIVATION FOR CONTEXT-ADAPTIVE, MULTI-LEVEL SIGNIFICANCE CODING - A device for coding video data includes a video coder configured to code first significance information for transform coefficients associated with residual data, wherein the first significance information indicates if a first sub-block comprises at least one non-zero coefficient, wherein the first sub-block is a sub-block of an entire transform block; and, code second significance information, wherein the second significance information indicates if a second sub-block comprises at least one non-zero coefficient, wherein the second sub-block is a sub-block of the first sub-block, wherein coding the second significance information comprises performing an arithmetic coding operation on the second significance information, wherein a context for the arithmetic coding operation is determined based on one or more neighboring sub-blocks of a same size as the first sub-block. | 03-27-2014 |
| 20140086309 | METHOD AND DEVICE FOR ENCODING AND DECODING AN IMAGE - A method for encoding an image. The method comprises: dividing the image into a plurality of variable sized blocks, encoding each sub-block using variable bit rate encoding, storing the encoded sub-blocks, generating a marker matrix, and storing the marker matrix for use in decoding the image. | 03-27-2014 |
| 20140092955 | SIGNALING LAYER IDENTIFIERS FOR OPERATION POINTS IN VIDEO CODING - Techniques described herein are related to coding layer identifiers for operation points in video coding. In one example, a method of decoding video data is provided. The method comprises decoding syntax elements in a video parameter set (VPS) within a conforming bitstream indicating a first operation point having a first set of content. The method further comprises decoding, if present, syntax elements in the VPS within the conforming bitstream indicating hypothetical reference decoder (HRD) parameter information having a second set of content for the first operation point, wherein the conforming bitstream does not include syntax elements in the VPS that duplicate at least one of the first or second set of content for a second operation point, and wherein decoding syntax elements comprises decoding the syntax elements indicating the first operation point and the HRD parameter information only within conforming bitstreams. | 04-03-2014 |
| 20140092956 | ADAPTIVE TRANSFORM OPTIONS FOR SCALABLE EXTENSION - In one embodiment, a method determines a first size of a first unit of video used for a prediction process in an enhancement layer. The enhancement layer is useable to enhance a base layer. The method then determines a second size of a second unit of video used for a transform process in the enhancement layer and determines whether adaptive transform is to be used in the transform process based on the first size of the first unit and the second size of the second unit where the adaptive transform provides at least three transform options. When adaptive transform is used, a transform option is selected from the at least three transform options for the transform process. | 04-03-2014 |
| 20140092957 | 2D Block Image Encoding - A coder (e.g., an encoder or decoder) implements coding of two dimensional blocks of image data using two dimensional differential pulse code modulation (2D DPCM). The coder may switch between DPCM and other types of coding, such as transform coding on a block by block basis. The 2D DPCM may obtain a reconstructed pixel within the two dimensional bloc and code a second, different, pixel within the two dimensional block using the reconstructed pixel. The coder may also create a bitstream of entropy encoded residuals that supports hybrid implicit/explicit specification of coding parameters. | 04-03-2014 |
| 20140092958 | IMAGE PROCESSING DEVICE AND METHOD - An image decoding apparatus includes a brightness adaptive offset processing section and a color difference adaptive offset processing section. The brightness adaptive offset processing section performs a brightness adaptive offset process with regard to brightness signal of an image to be decoded. The color difference adaptive offset processing section performs a color difference adaptive offset process with regard to a color difference signal based on data generated by the brightness adaptive offset process by the brightness adaptive offset processing section to generate a decoded image. | 04-03-2014 |
| 20140098850 | GENERATING A SINGLE CONTENT ENTITY TO MANAGE MULTIPLE BITRATE ENCODINGS FOR MULTIPLE CONTENT CONSUMPTION PLATFORMS - A content management system may generate a single content entity to manage multiple bitrate encodings for multiple content consumption platforms. A content management system may receive master content from a content creator/provider. Multiple bitrate encodings of the master content may be generated for consumption on multiple content consumption platforms. A single content entity identifier may be created to identify as a single content entity the generated bitrate encodings. The single content entity may be published to a content delivery system. The content delivery system may receive requests from content consumption devices for the content entity. A content delivery system may dynamically generate a content manifest to be sent to the content consumption device for use in streaming the content entity. | 04-10-2014 |
| 20140098851 | INDICATION OF VIDEO PROPERTIES - In one example, a method of decoding video data includes receiving, by a video decoder, a coded video sequence and decoding one or more bits of a reserved bits syntax element for the coded video sequence as one or more coding tool enable bits, wherein the reserved bit syntax element is part of a syntax structure that includes profile and level information, and wherein the one or more coding tool enable bits indicate whether one or more coding tools are enabled for use by the video decoder in decoding the video sequence. In some examples, the syntax structure is a profile_tier_level syntax structure. In additional examples, one or more coding tool enable bits are not included elsewhere in a sequence parameter set (SPS) syntax information. | 04-10-2014 |
| 20140098852 | COMPRESSION BANDWIDTH OVERFLOW MANAGEMENT USING AUXILIARY CONTROL CHANNEL - Embodiments of the present invention are directed toward increasing the throughput of information without increasing the data rates in transmission links in order to provide simpler and lower-power data transmission circuits. According to an aspect of the present invention, there is provided a data processor that includes: a compression encoder engine configured to receive a data signal and to compress the data signal to output a compressed data signal; a compression buffer configured to receive the compressed data signal and to buffer the compressed data signal to output a buffered data signal; and a link distributor configured to receive the buffered data signal and to distribute the buffered data signal to at least one of a first distribution signal or a second distribution signal according to a compression ratio. | 04-10-2014 |
| 20140098853 | Output Management of Prior Decoded Pictures at Picture Format Transitions in Bitstreams - Systems and methods may be provided for determining whether or not to output the “decoded pictures yet to be output” (DPYTBO) after decoding a random access point (RAP) picture of the second of two consecutive coded video sequences in a bitstream. The DPYTBO pictures may reside in a portion of memory coupled to a video decoder. The portion of memory may correspond to the Decoder Picture Buffer (DPB) of the video decoder. The picture resolution in the bitstream is allowed to change only at the start of a CVS. The first coded picture in a coded video sequence (CVS) may be a RAP picture. The second CVS may or may not have a picture resolution that is different from the picture resolution corresponding to the first CVS. | 04-10-2014 |
| 20140105272 | LOW POWER CONTEXT ADAPTIVE BINARY ARITHMETIC DECODER ENGINE - A technique for decoding data within a context-based adaptive binary arithmetic coding (CABAC) stream processes one or more bins of compressed data based on video format parameters associated with the stream. A configurable CABAC decoder circuit cascades one or more instances of CABAC bin decoder logic to operate properly within a timing constrain established by a decoder clock frequency. The decoder may advantageously select among different combinations of decoder clock frequency and decoded bins per clock cycle to minimize power consumption associated with decompressing and playing the compressed data. | 04-17-2014 |
| 20140105273 | Adaptive power management within media delivery system - Adaptive power management within media delivery system. Power management is performed for one or more devices within a media or signal delivery system. Depending upon one or more local and/or remote considerations associated with one or more of the devices within the system, various processing operations may undergo appropriate provisioning among the respective devices. Considering devices that are battery-powered, certain processing operations that may be highly power or energy consumptive may be offloaded to other devices having sufficient power or energy to effectuate such operations or that are not so limited or constrained by power energy (e.g., being wall powered or non-battery-powered). Operation of one or more of the devices in compliance with a power or energy constraint may be directed by a power management application resident on one or more of the devices within the system. | 04-17-2014 |
| 20140105274 | Video Coding Redundancy Reduction - Embodiments for reducing redundancy in video coding are disclosed. In accordance with at least one embodiment, video content is represented as a tree structure in which the nodes of the tree structure are associated with attributes of the video content. An encoder analyzes the nodes to determine whether there is redundancy associated with a last node of a divided node. In another embodiment, bidirectional prediction video coding techniques are applied to the video content. The encoder analyzes two lists of reference frames to determine whether a third mode of bidirectional prediction is redundant to a second mode of bidirectional prediction. The efficiency of video coding is improved by refraining from sending data symbols to the decoder in the event that the video coding techniques contain redundancy. | 04-17-2014 |
| 20140105275 | ADAPTIVE PARTITION SUBSET SELECTION MODULE AND METHOD FOR USE THEREWITH - A partition subset selection module selects a subset of available partitions for a macroblock pair of the plurality of macroblock pairs, based on motion search motion vectors generated by a motion search section, and further based on a macroblock adaptive frame and field indicator. A motion refinement module generates refined motion vectors for the macroblock pair, based on the subset of available partitions for a macroblock pair. | 04-17-2014 |
| 20140105276 | PICTURE CODING DEVICE, PICTURE CODING METHOD, PICTURE CODING PROGRAM, PICTURE DECODING DEVICE, PICTURE DECODING METHOD, AND PICTURE DECODING PROGRAM - In a case where a partition mode in which luma signals are partitioned horizontally and vertically is set when an intra prediction of a picture signal is made in units of minimal coding blocks set in advance, an intra prediction unit is configured to make an intra prediction of a chroma signal in units of prediction blocks of the intra prediction of chroma signals within the minimal coding block set in accordance with a chroma format. A second bitstream constructing unit constructs a bitstream of information relating to a luma intra prediction mode of a prediction block of luma signals and information relating to a chroma intra prediction mode of a prediction block of chroma signals. | 04-17-2014 |
| 20140112384 | ALGORITHMS FOR DETERMINING BITRATE FOR A STATISTICAL MULTIPLEXING SYSTEM USING SCENE CHANGE - An improved statistical multiplexer (statmux) system for coding and multiplexing multiple channels of standard definition (SD) digital television data, or multiple panels of high definition (HD) digital television data is provided, the system considering when a scene change occurs. A need parameter (NP) is determined for each of the multiple encoders considering scene change that occur, and the NP is provided to a statmux controller to enable a bit rate to be determined for the encoder. The system considers the new scene data after a scene change as well as current scene data being evaluated to determine data complexity for the NP value. This ensures significantly different complexity data after the scene change does not cause an inadequate bit rate determination. | 04-24-2014 |
| 20140112385 | ALGORITHMS FOR DETERMINING BITRATE FOR A STATISTICAL MULTIPLEXING SYSTEM TO ENSURE STREAM ALIGNMENT FROM ENCODERS TO THE MULTIPLEXER - A statistical multiplexer (statmux) system for encoding and multiplexing multiple channels of digital television data is provided that limits dropped bits due to misalignment of bit rate allocations to the encoders. Without such a system, if for example an encoder is allotted 0 bits during a first time period and 20 kilobits during a second time period, if the encoder jumps ahead from the first period to the second time period allocation, the 20 kilobits could be output during the 0 bit output allocation time period. This can cause buffer overflow downstream if other encoders are outputting at their maximum rate. To limit such misalignment, a maximum percentage increase of an encoder's bitrate allocation is set from time period to time period based on a formula to prevent bits from being dropped when misalignment occurs. | 04-24-2014 |
| 20140112386 | ALGORITHMS FOR DETERMINING BITRATE FOR A STATISTICAL MULTIPLEXING SYSTEM TO ACCOUNT FOR SIGNAL COMPLEXITY INCLUDING FILM MODE AND GOP STRUCTURAL CHANGES - A statistical multiplexer (statmux) system for encoding multiple channels of digital television data is provided with improved algorithms for determining bitrate for encoding and decoding to account for signal complexity, including accounting for film mode and GOP structural changes. In film mode when the lower frame per second rate for film mode is identified, rather than faster rate SD or HD modes, instead of determining bit rate from viewing the next picture in the look ahead buffer (LAB), the system looks at a start time stamp for specific data in the LAB. Accounting for GOP structural changes includes identifying the number of pictures (N) between I type pictures in data provided to an encoder and the number of pictures (M) between P type pictures, rather than using a fixed number for N and M. | 04-24-2014 |
| 20140112387 | SEPARABLE DIRECTIONAL TRANSFORMS - This disclosure describes techniques for transforming residual blocks of video data. In particular, a plurality of different transforms selectively applied to the residual blocks based on the prediction mode of the video blocks. At least a portion of the plurality of transforms are separable directional transform specifically trained for a corresponding prediction mode to provide better energy compaction for the residual blocks of the given prediction mode. Using separable directional transforms offers the benefits of lower computation complexity and storage requirement than use of non-separable directional transforms. Additionally, a scan order used to scan the coefficients of the residual block may be adjusted when applying separable directional transforms. In particular, the scan order may be adjusted based on statistics associated with one or more previously coded blocks to better ensure that non-zero coefficients are grouped near the front of the one-dimensional coefficient vector to improve the effectiveness of entropy coding. | 04-24-2014 |
| 20140119428 | SYSTEM AND METHOD FOR PROVIDING INTELLIGENT CHUNK DURATION - A method is provided in one example embodiment and includes receiving analytics information for a video file at a transcoder, the analytics information includes a plurality of points of interest. The method also includes determining a plurality of durations associated with a plurality of chunks of video data associated with the video file, the determining includes identifying a minimal distance between certain times associated with the plurality of points of interest and keyframe times. The method also includes transcoding the video file using the plurality of durations. The video file can be received from an analytics extractor that is to generate the plurality of points of interest. | 05-01-2014 |
| 20140119429 | METHOD AND APPARATUS FOR DETERMINING A MEDIA ENCODING FORMAT OF A MEDIA STREAM - A device and a method are disclosed. The device contains a network interface configured to receive a media stream, a processing device coupled to the network interface and configured to implement the method to determine an unknown media encoding format of a media stream, and a decoder device configured to decode media frames of the media stream. | 05-01-2014 |
| 20140119430 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes performing: context arithmetic coding to consecutively code (i) first information indicating whether or not to perform SAO processing for a first region and (ii) second information indicating whether or not to use, in the SAO processing for the first region, information on SAO processing for a region except the first region; and bypass arithmetic coding to code other information after the first and second information are coded. The other information includes third information indicating whether the SAO processing is edge or band offset processing. In the performing of context arithmetic coding, an initial bit value in a bit string of a parameter indicating a type of the SAO processing is coded as the first information. In the performing of bypass arithmetic coding, a value of a next bit following the initial bit in the bit string of the parameter is coded as the third information. | 05-01-2014 |
| 20140119431 | VIDEO ENCODING DEVICE - Provided is a video encoding device having an AFF-mode-determining unit ( | 05-01-2014 |
| 20140119433 | METHOD FOR ENCODING AND DECODING IMAGE INFORMATION - The present invention relates to a method for encoding and decoding image information and to an apparatus using same, and the method for encoding the image information, according to the present invention, comprises the steps of: generating a recovery block; applying a deblocking filter to the recovery block; applying a sample adaptive offset (SAO) to the recovery block to which the deblocking filter is applied; and transmitting the image information including information on the SAO which is applied, wherein in the step of transmitting, information for specifying bands that cover a scope of a pixel value, to which a band off set is applied, is transmitted when the band offset is applied during the step of applying the SAO. | 05-01-2014 |
| 20140126626 | METHOD FOR MEDIA RATE CONTROL IN A VIDEO ENCODING SYSTEM - A method for media rate control in a video encoding system disclosed. In one embodiment, an optical remaining one of the three parameter sets (Sk) is computed based on the provided user configuration inputs of two parameters sets (Si, Sj), wherein the user configuration inputs comprise two parameter sets (Si and Sj) out of three parameter sets (Si, Sj, and Sk), wherein the three parameter sets are latency parameter set, channel bandwidth parameter set, and video quality parameter set. The video encoding system is then configured based on the provided two parameter sets (Si, Sj) and the computed parameter set (Sk) to obtain a desired media rate control having optimal performance. | 05-08-2014 |
| 20140126627 | SEARCH APPARATUS AND SEARCH METHOD OF PREDICTION MODE HAVING DIRECTION - A search apparatus and search method of prediction mode having direction are provided. The apparatus and method can be applied to intra-prediction of video processing. An initial prediction mode is quickly selected based on a distribution of directional energy values. A plurality of first-stage prediction modes are obtained by spreading out from the initial prediction mode. A fine adjustment is processed according to the prediction mode of a neighboring block. The coding costs of the first-stage prediction modes are calculated and then the prediction mode with the lowest coding cost is selected. Therefore, a total calculation amount is reduced. | 05-08-2014 |
| 20140126628 | BEST QUALITY GIVEN A MAXIMUM BIT RATE - The present invention relates to flow control of a digital data stream that is to be transmitted with limited bit rate. The present invention provides a mix between CQ and CB. This in order to, in real time, ensure best possible quality of a data stream given a maximum available band with. This is useful both when saving a data stream to a data storage with a limited size and when playing the data stream in real time. In particular the invention relates to a method for flow control of a digital data stream that is to be sent with a limited transmission bit rate R. The method comprises encoding each data frame of a digital data stream into an encoded data frame comprising n quality layers and thereafter balancing the output of the encoder in order to achieve a constant bit rate on the output. The invention also relates to a corresponding data recorder and computer program. | 05-08-2014 |
| 20140126629 | METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO IN INTRA PREDICTION MODE - Provided is a method for decoding video, which performs prediction in an intra mode. The method for decoding video according to the invention comprises steps of: creating a current table index using a code number and MPM index information; and deriving a current prediction mode by adopting an index mapping table in the current table index. According to the present invention, video encoding/decoding efficiency can be improved. | 05-08-2014 |
| 20140126630 | IMAGE INFORMATION ENCODING AND DECODING METHOD - The present invention relates to an image information encoding and decoding method and a device for same. One embodiment of an image information encoding method according to the present invention, as an image information encoding method according to another embodiment of the present invention, includes the steps of: generating a restore block; applying a deblocking filter on the restore block; applying a Sample Adaptive Offset (SAO) on the restore block having the deblocking filter applied thereon; and transmitting information on the SAO application. During the applying of the SAO, the SAO is applied to chroma pixels, and during the transmitting of the information, in addition to information on whether the SAO is applied on the chroma pixels, at least one of area information, division information on the SAO coverage area, SAO type information, and SAO offset information is transmitted. | 05-08-2014 |
| 20140126631 | OPTIMAL INTRA PREDICTION IN BLOCK-BASED VIDEO CODING - Selection of an optimal directional intra prediction mode for block-based video coding from a reduced number of intra predictions, including a plurality of angular intra predictions, a planar prediction mode, and DC prediction mode, by performing a logarithmic search inside a set of intra prediction directions. | 05-08-2014 |
| 20140133546 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM - A video encoding device includes means used to estimate a lower limit of a bit amount/distortion cost function when an adaptive interpolation filter (AIF) is used based on a generated bit amount and an encoding distortion amount when a region-based adaptive interpolation filter (RBAIF) is used upon selecting an optimum IF based on a bit amount/distortion cost function among a fixed interpolation filter (IF), the AIF, and the RBAIF, and means used to select an optimum IF based on a comparison of bit amount/distortion cost functions of the fixed IF and the RBAIF when the lower limit is a value greater than the bit amount/distortion cost function for the fixed IF, and selecting an optimum IF based on a comparison of bit amount/distortion functions of the fixed IF, the AIF, and the RBAIF only when the lower limit is less than or equal to the bit amount/distortion cost function for the fixed IF. | 05-15-2014 |
| 20140133547 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - There is provided an image processing device including an acquisition section that acquires, from a parameter set of an encoded stream, a parameter group including one or more parameters used when encoding or decoding an image, and a sub-identifier that identifies the parameter group, and a decoding section that decodes the image using a parameter in the parameter group that is referenced using the sub-identifier acquired by the acquisition section. | 05-15-2014 |
| 20140133548 | METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCTS FOR DETECTING BOUNDARIES OF VIDEO SEGMENTS - There is provided a method comprising receiving at least one sample of a sensor data obtained from at least one sensor; obtaining an indicator of a video scene change on the basis of the at least one sample of the sensor data; and providing the indicator in order to change at least one parameter of a video encoding. There is also provided an apparatus comprising a processor, and memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to receive at least one sample of a sensor data; obtain an indicator of a video scene change on the basis of the at least one sample of the sensor data; and provide the indicator in order to change at least one parameter of a video encoding. | 05-15-2014 |
| 20140133549 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 05-15-2014 |
| 20140140392 | VIDEO PROCESSING SYSTEM WITH PREDICTION MECHANISM AND METHOD OF OPERATION THEREOF - A video processing system, and a method of operation thereof, including: a source input module for receiving a frame from a video source; a left co-located prediction module, coupled to the source input module, for determining a left intra direction based on an enhancement left neighbor mode and a base left neighbor mode, the enhancement left neighbor mode associated with an enhancement layer and the base left neighbor mode associated with a base layer, the enhancement layer and the base layer formed from the frame; and a prediction mode module, coupled to the left co-located prediction module, for generating an intra mode based on the left intra direction to generate a video bitstream for a video decoder to display on a device. | 05-22-2014 |
| 20140146873 | IMAGE PROCESSING APPARATUS AND METHOD - A method and apparatus for applying a tile size adaptively based on a size of a coding unit. An image processing apparatus may detect a size of a largest coding unit (LCU) used in encoding of a video from a header of a bitstream, may determine a tile size adaptively based on the detected size of the LCU, and may decode the bitstream in units of the LCU based on the determined tile size. | 05-29-2014 |
| 20140146874 | DATA PROCESSING APPARATUS WITH ADAPTIVE COMPRESSION/DE-COMPRESSION ALGORITHM SELECTION FOR DATA COMMUNICATION OVER CAMERA INTERFACE AND RELATED DATA PROCESSING METHOD - A data processing apparatus has a compressor and an output interface. The compressor generates an output multimedia data according to an input multimedia data. The output interface packs the output multimedia data into an output bitstream, and outputs the output bitstream to another data processing apparatus via a camera interface. The camera interface is a camera serial interface (CSI) standardized by a Mobile Industry Processor Interface (MIPI). In addition, the compressor adaptively adjusts a compression algorithm according to context characteristics in the input multimedia data, power supply status, operational status of a storage device, image capture characteristic, configuration of the another data processing apparatus, and/or compression algorithm supported by the another data processing apparatus. Further, the another data processing apparatus adaptively adjusts a de-compression algorithm according to a compression algorithm supported by the compressor. | 05-29-2014 |
| 20140146875 | LOOP FILTERING ACROSS CONSTRAINED INTRA BLOCK BOUNDARIES IN VIDEO CODING - This disclosure describes techniques for coding video data. In particular, this disclosure describes techniques for loop filtering for video coding. The techniques of this disclosure may apply to loop filtering and/or partial loop filtering across block boundaries in scalable video coding processes. Loop filtering may include, for example, one or more of adaptive loop filtering (ALF), sample adaptive offset (SAO) filtering, and deblocking filtering. | 05-29-2014 |
| 20140146876 | MOVING PICTURE CODING APPARATUS, MOVING PICTURE CODING METHOD, MOVING PICTURE CODING PROGRAM, AND MOVING PICTURE DECODING APPARATUS - An inter mode coding unit codes the information regarding the motion information of either one of a merge mode and a motion vector difference mode. A block size information coding unit codes the shape of the block on which the motion compensation prediction is performed. An evaluation inter mode setting unit sets the shape of the block, on which the motion compensation prediction is performed, then selects at least one of the merge mode and the motion vector difference mode, according to the shape thereof set. An inter mode determining unit determines an inter mode of the information regarding the motion information to be coded by the inter mode coding unit in the selectable inter mode. | 05-29-2014 |
| 20140146877 | METHOD FOR DYNAMICALLY ADAPTING VIDEO IMAGE PARAMETERS FOR FACILITATING SUBSEQUENT APPLICATIONS - A method for adapting an input video stream (V) for facilitating a subsequent application to be performed upon receipt of the adapted video stream by a receiver comprises the steps of determining control parameters (AVP) from quality requirement parameters (QR), bandwidth limitation parameters (BW) and spatial parameters (x, y), a step of performing a spatial-temporal adaptation of said input video stream (V) in accordance with said control parameters (AVP) to thereby generate said adapted video stream (AV) for provision to said receiver. | 05-29-2014 |
| 20140146878 | METHOD AND APPARATUS FOR ENCODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE, AND METHOD AND APPARATUS FOR DECODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE - A method and apparatus for decoding a video and a method and apparatus for encoding a video are provided. The method for decoding the video includes: receiving and parsing a bitstream of an encoded video; extracting, from the bitstream, encoded image data of a current picture of the encoded video assigned to a maximum coding unit, and information about a coded depth and an encoding mode according to the maximum coding unit; and decoding the encoded image data for the maximum coding unit based on the information about the coded depth and the encoding mode for the maximum coding unit, in consideration of a raster scanning order for the maximum coding unit and a zigzag scanning order for coding units of the maximum coding unit according to depths. | 05-29-2014 |
| 20140146879 | METHOD AND APPARATUS FOR ENCODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE, AND METHOD AND APPARATUS FOR DECODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE - A method and apparatus for decoding a video and a method and apparatus for encoding a video are provided. The method for decoding the video includes: receiving and parsing a bitstream of an encoded video; extracting, from the bitstream, encoded image data of a current picture of the encoded video assigned to a maximum coding unit, and information about a coded depth and an encoding mode according to the maximum coding unit; and decoding the encoded image data for the maximum coding unit based on the information about the coded depth and the encoding mode for the maximum coding unit, in consideration of a raster scanning order for the maximum coding unit and a zigzag scanning order for coding units of the maximum coding unit according to depths. | 05-29-2014 |
| 20140146880 | METHOD AND APPARATUS FOR ENCODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE, AND METHOD AND APPARATUS FOR DECODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE - A method and apparatus for decoding a video and a method and apparatus for encoding a video are provided. The method for decoding the video includes: receiving and parsing a bitstream of an encoded video; extracting, from the bitstream, encoded image data of a current picture of the encoded video assigned to a maximum coding unit, and information about a coded depth and an encoding mode according to the maximum coding unit; and decoding the encoded image data for the maximum coding unit based on the information about the coded depth and the encoding mode for the maximum coding unit, in consideration of a raster scanning order for the maximum coding unit and a zigzag scanning order for coding units of the maximum coding unit according to depths. | 05-29-2014 |
| 20140153635 | METHOD, COMPUTER PROGRAM PRODUCT, AND SYSTEM FOR MULTI-THREADED VIDEO ENCODING - A method, computer program product, and system are provided for multi-threaded video encoding. The method includes the steps of generating a set of motion vectors in a hardware video encoder based on a current frame of a video stream and a reference frame of the video stream, dividing the current frame into a number of slices, encoding each slice of the current frame based on the set of motion vectors, and combining the encoded slices to generate an encoded bitstream. | 06-05-2014 |
| 20140153636 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method includes: obtaining a boundary control flag for jointly controlling a deblocking filter operation and a sample adaptive offset operation for a slice boundary of a current slice to be decoded included in a coded picture; decoding the current slice; performing the deblocking filter operation based on the boundary control flag only on at least one of a top slice boundary or a left slice boundary among all slice boundaries of the current slice that has been decoded; and performing the sample adaptive offset operation dependent on the boundary control flag only on the at least one of the top slice boundary or the left slice boundary among all the slice boundaries of the current slice that has been decoded. | 06-05-2014 |
| 20140153637 | DATA PROCESSING DEVICE AND DATA PROCESSING METHOD - A data processing device calculates the number of temporary redundant packets based on the transmission rate of a wireless network and the frame composition ratio between I frames and P frames, calculates a temporary redundant packet rate based on the transmission rate and the number of temporary redundant packets, calculates an encoding rate from the transmission rate and the temporary redundant packet rate, encodes video data at the encoding rate to packetize the video data, calculates the number of redundant packets added to each frame obtained as a result of the processing on the video data, and adds redundant packets to each frame. | 06-05-2014 |
| 20140153638 | VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS, BASED ON HIERARCHICAL CODED BLOCK PATTERN INFORMATION - A method and apparatus for decoding video and a method and apparatus for encoding video are provided. The method for decoding video includes: receiving and parsing a bitstream of encoded video; extracting, from the bitstream, encoded image data of a current picture assigned to a maximum coding unit of the current picture, information regarding a coded depth of the maximum coding unit, information regarding an encoding mode, and coding unit pattern information indicating whether texture information of the maximum coding units has been encoded; and decoding the encoded image data for the maximum coding unit, based on the information regarding the coded depth of the maximum coding unit, the information regarding the encoding mode, and the coding unit pattern information. | 06-05-2014 |
| 20140161174 | HIGH-DENSITY QUALITY-ADAPTIVE MULTI-RATE TRANSCODER SYSTEMS AND METHODS - The present invention provides methods and systems that create numerous high-quality output streams at different spatial or temporal resolutions from a single input stream. An input stream is transcoded at a first transcoder module to provide N output streams, wherein each of the N output streams comprises different versions of the input stream. Parameters are obtained during transcoding of the input stream and provided to a second transcoder module together with the input stream. The input stream may be transcoded at the second transcoder module to produce M output streams based on the parameters received from the first transcoder module. The parameters received from the first transcoder module may be used to enhance the transcoding at the second transcoder module. | 06-12-2014 |
| 20140161175 | ADVANCED RESIDUAL PREDICTION IN SCALABLE AND MULTI-VIEW VIDEO CODING - In an example, a method of coding video data includes determining a partition mode for coding a block of video data, where the partition mode indicates a division of the block of video data for predictive coding. The method also includes determining whether to code a weighting factor for an inter-view residual prediction process based on the partition mode, where, when the weighting factor is not coded, the inter-view residual prediction process is not applied to predict a residual for the block. The method also includes coding the block of video data with the determined partition mode. | 06-12-2014 |
| 20140161176 | Method and Device for Controlling Video Quality Fluctuation Based on Scalable Video Coding - Disclosed are a method and an apparatus for controlling video quality fluctuation based on scalable video coding. The method includes: performing scalable video coding on video data to be transmitted to generate a base layer and at least one enhancement layer; sending the video data after the scalable video coding to a terminal device; determining a currently expected bit rate according to a transmission status of the video data on a currently used channel, the currently expected bit rate being the maximum data transmission bit rate that the predicted currently used channel can sustain; acquiring the currently highest enhancement layer according to the currently expected bit rate, the sum of all bit rates occupied when transmitting video data under the currently highest enhancement layer being no larger than the currently expected bit rate; and sending the video data under the currently highest enhancement layer to the terminal device. | 06-12-2014 |
| 20140169446 | ADAPTIVE DECODING SYSTEM - A method, system, and computer program product for adaptive decoding is provided herein. The method includes the steps of receiving a video bitstream, selecting an initial extraction level, and switching to a lower quality extraction level if a decoding rate is less than a rate at which data extracted from the video bitstream is sent to the decoder. The method further includes the step of switching to a higher quality extraction level if the decoding rate is greater than a rate at which data extracted from the video bitstream is to the decoder. | 06-19-2014 |
| 20140169447 | COMBINATION HEVC DEBLOCKER/SAO FILTER - Systems and methods are provided that allow a deblocking filter and a sample adaptive offset (SAO) filter to be combined in a loop filter stage of a High Efficiency Video Coding (HEVC) decoder. In combining the deblocking filter and the SAO filter, an intermediate buffer may not be utilized, while still allowing for the deblocking filter and the SAO filter to operate substantially in parallel. The order of pixel processing and the parallelization of operation is such that the processing performed by the SAO filter need not hinder the processing performed by the deblocking filter within the loop filter stage. Additionally, and by combining the deblocking filter and the SAO filter without utilizing buffering therebetween, savings in space and cost in implementing the HEVC decoder may be realized. | 06-19-2014 |
| 20140169448 | LOW-DELAY BUFFERING MODEL IN VIDEO CODING - Techniques for low-delay buffering in a video coding process are disclosed. Video decoding techniques may include receiving a first decoded picture buffer (DPB) output delay and a second DPB output delay for a decoded picture, determining, for the decoded picture, a first DPB output time using the first DPB output delay in the case a hypothetical reference decoder (HRD) setting for a video decoder indicates operation at a picture level, and determining, for the decoded picture, a second DPB output time using the second DPB output delay in the case that the HRD setting for the video decoder indicates operation at a sub-picture level. | 06-19-2014 |
| 20140169449 | REFERENCE PICTURE MANAGEMENT FOR LAYERED VIDEO - An encoded representation ( | 06-19-2014 |
| 20140169450 | METHODS AND APPARATUSES FOR ENCODING AND DECODING VIDEO USING PERIODIC BUFFER DESCRIPTION - A method of encoding video including: writing a plurality of predetermined buffer descriptions into a sequence parameter set of a coded video bitstream; writing a plurality of updating parameters into a slice header of the coded video bitstream for selecting and modifying one buffer description out of the plurality of buffer descriptions; and encoding a slice into the coded video bitstream using the slice header and the modified buffer description. | 06-19-2014 |
| 20140177701 | SYSTEM AND METHOD FOR TIME BUDGET ACHIEVEMENT IN REAL-TIME VIDEO ENCODING - A method and apparatus for encoding video is provided. A pre-analysis processor processes unencoded video data formed from a series of video pictures into respective video segments. An allocation processor allocates a first encoding time budget to a respective video segment respective video segment based on a size of the respective segment a target frame rate for the respective video segment, a second encoding time budget to individual pictures that form the respective video segment based on a picture-level complexity value and a type of picture, the second time budget for all individual pictures being substantially equal to the first time budget, and a third encoding time budget to individual blocks that form respective ones of the individual pictures based on a coding mode for the individual block and a block complexity value, the third time budget for all blocks being substantially equal to the second time budget for the respective individual picture that includes the blocks. An encoding processor encodes respective video segments using the third time budget to encode the video segment using the first, second and third time budgets. | 06-26-2014 |
| 20140177702 | CONSTANT QUALITY VIDEO ENCODING - In embodiments, apparatuses, methods and storage media are described that are associated with content distribution. In embodiments, an encoder may be configured to encode portions of content, such as video and/or audio data, utilizing different sets of encoding control variable settings. The different sets of encoding control variable settings may include different resolutions, different frame rates, and/or different compression levels. In embodiments, different segments and/or different portions of a single segment of data may be encoded using different sets of encoding control variable settings. | 06-26-2014 |
| 20140177703 | METHODS AND SYSTEMS FOR QUALITY CONTROLLED ENCODING - This disclosure describes techniques for controlling a perceived quality of multimedia sequences to try to achieve a desired constant perceptual quality regardless of the content of the sequences. In particular, an encoding device may implement quality control techniques to associate a sequence segment with a content “class” based on the content of the segment, determine a perceptual quality metric of the sequence segment, and adjust at least one encoding parameter used to encode the segment is encoded such that for the perceptual quality of the sequence segment converges to the desired quality. | 06-26-2014 |
| 20140177704 | MULTI-TYPE PARALLELIZED SAMPLE ADAPTIVE OFFSET IN VIDEO CODING - In general, techniques are described for performing multiple passes of sample adaptive offset (SAO) filtering when coding video data. A video decoding device comprising one or more processors may perform the techniques. The processors may determine a first SAO pixel classification for a block of video data and determine a first offset value based on the first SAO pixel classification and one or more pixel values of the block. The one or more processors may also determine a second SAO pixel classification for the block and determine a second offset value based on the second SAO pixel classification and the one or more pixel values of block of video data. The processors may then apply the first offset value and the second offset value to the block of video data to generate a block of SAO filtered video data. | 06-26-2014 |
| 20140177705 | PICTURE CODING AND DECODING APPARATUSES AND METHODS PERFORMING VARIABLE LENGTH CODING AND DECODING ON A SLICE HEADER STREAM AND ARITHMETIC CODING AND DECODING ON A SLICE DATA STREAM - A frame coding unit generates individual picture signal information from a moving picture signal, and outputs a frame code value which is a numeric value to be obtained as a result of coding picture signal information of each frame. A variable length coding unit decomposes the frame code value into unit frame code values which are basic units of coding, converts the unit frame code values into frame code words using only a single code table, and constructs a frame stream by combining the converted frame code words. A multiplexing unit multiplexes a header stream which is constructed through a method equivalent to a conventional method and the frame stream, and constructs a picture coded signal. | 06-26-2014 |
| 20140185664 | INTER-LAYER PREDICTION USING SAMPLE-ADAPTIVE ADJUSTMENTS FOR BIT DEPTH SCALABLE VIDEO CODING - An apparatus for coding video data according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video data. The video data may include a base layer comprising samples with a lower bit depth and an enhancement layer comprising samples with a higher bit depth. The processor predicts the values of samples in the enhancement layer based on the values of samples in the base layer. The prediction performed by the processor includes applying a preliminary mapping to the base layer samples to obtain preliminary predictions, and then applying adaptive adjustments to the preliminary predictions to obtain refined predictions. Parameters used for the adaptive adjustments may depend on the values and distribution of base layer samples. The processor may encode or decode the video data. | 07-03-2014 |
| 20140185665 | HIGH-FREQUENCY-PASS SAMPLE ADAPTIVE OFFSET IN VIDEO CODING - This disclosure presents techniques for sample adaptive offset (SAO) filtering that focus on filtering the changed region of a picture or layer (e.g., the high frequency component of video blocks of a picture or layer). In general, the techniques of this disclosure may be referred to as High-Frequency-Pass SAO (HSAO) filtering. In one example, a method for coding video data comprises obtaining a decoded block of video data, separating the decoded block of video data into a low-frequency component and a high-frequency component, applying an SAO filter to the high-frequency component to generate a SAO filtered high-frequency component, and combining the SAO filtered high-frequency component and the low-frequency component to generate a filtered decoded block of video data. | 07-03-2014 |
| 20140185666 | APPARATUS AND METHOD FOR MOVING IMAGE ENCODING AND APPARATUS AND METHOD FOR MOVING IMAGE DECODING - According to certain embodiment, there is provided a moving image encoding apparatus in which a first encoding unit performs a first encoding process on an input image to generate first encoded data and to perform a first decoding process on the first encoded data to generate a first decoded image, a difference calculating unit generates a difference image between the input image and the first decoded image, a first pixel range converting unit converts pixel values of the difference image to be within a first specific range to generate a first converted image, a second encoding unit performs a second encoding process on the first converted image to generate second encoded data, the second encoding process being different from the first encoding process and the first specific range is a range including a range of pixel values that can be encoded by the second encoding unit. | 07-03-2014 |
| 20140192858 | JCTVC-L0226: VPS AND VPS_EXTENSION UPDATES - The VPS and vps_extension( ) syntax structures are updated with some cleanups for the HEVC Extensions in scalable video coding, multi-view coding and 3D video coding areas. In addition, four options of adding syntaxes to support mixed video sequences in various layers for the VPS extension are described. | 07-10-2014 |
| 20140192859 | JCTVC-L0227: VPS_EXTENSION WITH UPDATES OF PROFILE-TIER-LEVEL SYNTAX STRUCTURE - The profile_tier_level syntax structure of a High Efficiency Video Coding (HEVC) syntax structure is updated to provide more flexibility for use in the vps_extension( ) syntax structure for use in each layer or operating point. A new flag ‘LevelPresentFlag’ is added in profile_tier_level syntax structure to support the variance of Level parameters separately from the Profile/Tier Parameter. The update to the profile_tier_level syntax structure provides flexibility in selecting profile_tier and level parameters for HEVC selections in scalable video coding, multi-view coding and 3D video coding areas. | 07-10-2014 |
| 20140192860 | METHOD, DEVICE, COMPUTER PROGRAM, AND INFORMATION STORAGE MEANS FOR ENCODING OR DECODING A SCALABLE VIDEO SEQUENCE - The invention relates to a method of encoding or decoding a scalable video sequence of frames encoded in a bit-stream made of at least one lower layer and one upper layer, the method comprising:
| 07-10-2014 |
| 20140192861 | METHOD AND APPARATUS FOR REORDERED BINARIZATION OF SYNTAX ELEMENTS IN CABAC - A method and apparatus of context-based adaptive binary arithmetic encoding/decoding for syntax elements of one or more blocks are disclosed. According to one embodiment of the present invention, the binarization results of the x and y positions of the last significant coefficient of a transform unit are reordered by collecting the bypass bins together. According to another embodiment of the present invention, binarization results of syntax elements from two or more of four Intra N×N prediction units, including prev_intra_luma_pred_flag, rem_intra_luma_pred_mode, and mpm_idx are reordered by collecting the bypass bins together. In yet another embodiment according to the present invention, the binarization results of other syntax elements are also reordered by collecting bypass bins together. Furthermore, the above reordering of binarization results may be used for binarization results corresponding to a block and its neighboring blocks. | 07-10-2014 |
| 20140198839 | LOW LATENCY SUB-FRAME LEVEL VIDEO DECODING - A method includes transmitting encoded video data related to video frames of a video stream from a source to a client device through a network such that a packet of the encoded video data is limited to including data associated with one portion of a video frame. The video frame includes a number of portions including the one portion. The method also includes time-stamping, through the client device and/or the source, the video frames such that packets of a video frame have a common timestamp. Further, the method includes decoding, at the client device, the video frames at a level of a portion of a video frame instead of a level of the video frame based on the time-stamping. | 07-17-2014 |
| 20140198840 | METHOD AND APPARATUS FOR ADAPTIVE LOOP FILTER WITH CONSTRAINED FILTER COEFFICIENTS - Methods and apparatuses for processing of coded video using ALF are disclosed. Embodiments according to the present invention apply ALF with constrained data range to reconstructed video data. The ALF parameters comprise a center coefficient, one or more non-center coefficients, and an offset term. As an example, the constrained data range for the center coefficient is selected from [0.0, 2.0) and [0.5, 1.5). In another example, the constrained data range for said one or more non-center coefficient is selected from [−1.0, 1.0) and [−0.5, 0.5). The constrained data range can also be applied to the offset term. For example the range of [−2 | 07-17-2014 |
| 20140204995 | EFFICIENT REGION OF INTEREST DETECTION - An apparatus having a circuit is disclosed. The circuit may be configured to (i) calculate a plurality of complexity values while compressing a current picture in a video signal. Each complexity value generally characterizes how a corresponding one of a plurality of blocks in the current picture was compressed. The circuit may also be configured to (ii) adjust the complexity values below a first threshold to a default value and (iii) generate a region of interest by grouping the blocks having non-default values of the complexity values above a second threshold. | 07-24-2014 |
| 20140204996 | ADAPTIVE NOISE REDUCTION ENGINE FOR STREAMING VIDEO - An adaptive video noise reduction (AVNR) engine reduces noise in streaming video. The engine reads embedded information in the streaming video describing attributes of the video, such as bit rate, frame rate, resolution, content type and quality of the streaming video. The information may be included in a manifest of the streaming video. Based on the video attributes, the engine outputs one or more input values to applications that reduce noise of the streaming video. The one or more applications may reduce mosquito, block, temporal, random and banding noise of the video in response to the input values from the engine. | 07-24-2014 |
| 20140204997 | Soft Demapper, Calculating System, and Method for Calibrating Soft Data of Multimedia Data Stream - By determining a scaling factor for scaling signals according to a signal having low bit error rates, and by adjusting soft data using the scaling factor, when soft data are simulated using the Gaussian Model having obvious errors with respect to reality, impacts of signals having low bit error rates are effectively amplified so that impacts of signals having high bit error rates are effectively reduced on the contrary. As a result, the obvious errors introduced by using the Gaussian Model and a low broadcast quality of digital television signals caused by said obvious errors can be neutralized. | 07-24-2014 |
| 20140204998 | IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR SAME - According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved. | 07-24-2014 |
| 20140204999 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE INFORMATION - The present invention relates to a deblocking filtering method, a method for inducing bs (boundary strength) therefor, and a method and an apparatus for encoding/decoding using the same. The method for inducing the bS of the present invention comprises the steps of: inducing a boundary of a deblocking filtering unit block as a unit block for applying the deblocking filtering; and setting the bS according to each bS setting unit block within the deblocking filtering unit block, wherein the bS setting step can set a bS value for a target boundary corresponding to a boundary of the deblocking filtering unit block as the bs setting unit block. | 07-24-2014 |
| 20140205000 | IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR SAME - According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved. | 07-24-2014 |
| 20140205001 | ADAPTIVE WEIGHTING OF REFERENCE PICTURES IN VIDEO ENCODING - A video decoder, encoder, and corresponding methods for processing video data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture. | 07-24-2014 |
| 20140211841 | Extension Data Handling - A length indicator ( | 07-31-2014 |
| 20140211842 | Adapting Robustness in Video Coding - An input receives a video signal comprising a plurality of frames, each comprising a plurality of image portions. Each of the image portions is encoded by an encoder, to generate an encoded signal. An adaptation module selects a respective encoding mode used to encode each of the image portions. The selection is based on a process that balances an estimate of distortion for the image portion if encoded using the respective encoding mode and a bitrate that would be incurred by encoding the image portion using the respective encoding mode. The adaptation module is also configured to determine, within each of one or more frames of the video signal, at least two different regions having different perceptual significance, and to adapt the above-mentioned process in dependence on which of the regions the image portion being encoded is in. | 07-31-2014 |
| 20140211843 | MOVING IMAGE ENCODING DEVICE AND MOVING IMAGE ENCODING METHOD - According to one embodiment, a moving picture coding apparatus and a moving picture coding method capable of further improving coding efficiency, the moving picture coding apparatus comprises a controller. The controller performs control such that coded data are created using an inter-prediction structure in which the maximum number of consecutive B-pictures in a GOP is set to “N”, and the number of layers in a reference relationship between the B-pictures is set to “L”. | 07-31-2014 |
| 20140211844 | MOVING IMAGE ENCODING DEVICE AND MOVING IMAGE ENCODING METHOD - According to one embodiment, a moving image encoding device and a moving image encoding method improving encoding efficiency are provided. In the embodiment, moving image encoding device includes controller. The controller generates a B picture by using a GOP structure enabling reference from a reference B picture in a GOP to another reference B picture in the GOP. | 07-31-2014 |
| 20140211845 | MOVING IMAGE ENCODING APPARATUS - A moving image encoding apparatus configured to use an image one frame before a target image for encoding to calculate a filtering coefficient for each intra prediction mode of a decoded image from the decoded image and the original image, extracts a filtering coefficient to perform a filtering process to a reference pixel for intra prediction mode determination of a peripheral block of the target block for encoding according to the intra prediction mode of the peripheral block and to generate a reference image for intra prediction mode determination, uses the reference image for intra prediction mode determination to select an intra prediction mode for the target block for encoding, and generates an intra prediction image of the target block for encoding. | 07-31-2014 |
| 20140211846 | CROSS-CHANNEL RESIDUAL PREDICTION - Systems, apparatus and methods are described including determining a prediction residual for a channel of video data; and determining, using the first channel's prediction residual, a prediction residual for a second channel of the video data. Further, a prediction residual for a third channel of the video data may be determined using the second channel's prediction residual. | 07-31-2014 |
| 20140211847 | VIDEO ENCODING SYSTEM AND METHOD - A video processing method for a video image consisting of a plurality of units includes: generating a plurality of information types of at least a first unit and a second unit neighbouring the first unit; and storing the plurality of information types of the first unit in a first continuous address space in a buffer and storing the plurality of information types of the second unit in a second continuous address space in the buffer, wherein the first continuous address space is adjacent to the second continuous address space. The plurality of information types of the first and second units are required for coding a specific unit, and the order of the stored plurality of information types of the first and second units is manipulated in each of the first and second continuous address spaces. | 07-31-2014 |
| 20140211848 | METHOD AND APPARATUS FOR REDUCTION OF DEBLOCKING FILTER - A method and apparatus for deblocking of reconstructed video are disclosed. In one embodiment, the method divides a block boundary into two sub-boundaries and separates lines or column across the sub-boundaries into two groups. The deblocking filter decision for each group is determined based on the lines or columns in the respective group. In another embodiment, the method divides block edges of blocks in the LCUs into two edge groups, where the first edge group corresponds to horizontal block edges between two LCUs and the second edge group corresponds to remaining block edges not included in the first edge group. The number of lines processed by a vertical filter in the first edge group is less than the number of lines processed by a vertical filter in the second edge group. Accordingly, a system embodying the present invention has reduced storage requirement. | 07-31-2014 |
| 20140219330 | Method and System for Encoding Collections of Images and Videos - An input segment of an input video is encoded by first extracting and storing, for each segment of previously encoded videos, a set of reference features. The set of input features are matched with each set of the reference features to produce a set of scores. The reference segments having largest scores are selected to produce a first reduced set of reference segments. A rate-distortion cost for each reference segment in the first reduced set of reference segments is estimated. The reference segments in the first reduced set of reference segments is selected to produce a second reduced set of reference segments. Then, the input segment are encoded based on second reduced set of reference segments. | 08-07-2014 |
| 20140219331 | APPARATUSES AND METHODS FOR PERFORMING JOINT RATE-DISTORTION OPTIMIZATION OF PREDICTION MODE - Examples of apparatuses and methods for performing a joint RD optimization operation are described herein. A method may include successively encoding a macroblock using a plurality of coding modes. The method may further include determining a corresponding rate-distortion cost to encode the macroblock based on a corresponding coding mode of the plurality of coding modes. The method may further include determining a corresponding estimated rate-distortion cost to encode one or more macroblocks affected by encoding the macroblock using the corresponding coding mode. The method may further include selecting a coding mode of the plurality of coding modes having a lowest corresponding joint rate-distortion cost. The corresponding total rate-distortion cost comprises the corresponding rate-distortion cost to encode the macroblock and the corresponding estimated rate-distortion cost to encode the one or more of the affected macroblocks. | 08-07-2014 |
| 20140219332 | Virtual Field Buffer Based Decoding - Aspects of virtual field buffer based decoding are described. In one embodiment, a current picture field is read from a coded picture buffer comprising coded pictures of video, for example. The current picture may be associated with a top or bottom field polarity. According to decoding and picture output orders, the current picture field is assigned to an available field entry of a virtual field buffer, and an available frame index of a virtual frame map is assigned to the current picture field. The assignment of the available frame index to the current picture field is indicated to a decoder that decodes the current picture field with reference to the assigned frame index. According to aspects of the embodiments described herein, rather than determining complimentary picture fields after decoding, the assignment of complimentary picture fields to virtual frame indexes before decoding provides certain efficiencies. | 08-07-2014 |
| 20140219333 | Adaptive Filtering for Scalable Video Coding - In a scalable video codec, an adaptive Wiener filter with offset aims to minimize the differences between two input pictures or picture regions, and the filter coefficients need to be transmitted to decoder site. | 08-07-2014 |
| 20140219334 | IMAGE DECODING APPARATUS - An image decoding device is provided which reconstructs an intra prediction mode of a current prediction unit using a prediction mode group indicator and a prediction mode index, determines a size of a sub block when intra prediction is performed on each sub block of the current prediction unit, and creates reference pixels and a prediction block per sub block. | 08-07-2014 |
| 20140219335 | METHOD AND APPARATUS FOR ENTROPY ENCODING USING HIERARCHICAL DATA UNIT, AND METHOD AND APPARATUS FOR DECODING - Provided are video encoding and decoding methods and apparatuses. The video encoding method includes: encoding a video based on data units having a hierarchical structure; determining a context model used for entropy encoding a syntax element of a data unit based on at least one piece of additional information of the data units; and entropy encoding the syntax element by using the determined context model. | 08-07-2014 |
| 20140219336 | METHOD AND APPARATUS FOR INTRA PREDICTION - Disclosed herein are a method and apparatus for filtering a reference pixel. A method of smoothing a reference pixel may include determining whether or not to perform smoothing on a reference pixel based on the size of a transform block and information about an intra-prediction mode for the transform block and determining a smoothing method by comparing the size of the transform block with the size of a maximum transform block. Accordingly, image coding efficiency can be increased, and picture quality can be improved. | 08-07-2014 |
| 20140219337 | METHOD FOR ENCODING AND DECODING IMAGES BASED ON CONSTRAINED OFFSET COMPENSATION AND LOOP FILTER, AND APPARATUS THEREFOR - Provided are a method and apparatus for encoding and decoding images based on constrained offset compensation and a loop filter. The image decoding apparatus: receives, from an encoder, a first indicator indicating whether a sequence, a picture, a frame, a slice, a coding unit (CU), a prediction unit (PU), and/or a transform unit (TU) supports constrained offset compensation; receives, from the encoder, a second indicator indicating whether constrained sample adaptive offset (SAO) compensation or an adaptive loop filter (ALF) is applied; receives a parameter from the encoder; and applies the SAO compensation or the ALF to pixels of a restored image on the basis of the second indicator and the parameter. | 08-07-2014 |
| 20140219338 | MOVING PICTURE ENCODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING METHOD, AND MOVING PICTURE DECODING APPARATUS - Provided is a moving picture encoding apparatus and a moving picture decoding apparatus which make it possible to increase decoding efficiency. A spatially scalable-multiview moving picture encoding apparatus includes: a base layer encoder which encodes a base layer; an enhancement layer encoder which performs spatially scalable encoding on an enhancement layer, using a reconstructed image of the base layer generated by the base layer encoder; an enhancement view base layer encoder which performs multiview encoding on the base layer of the enhancement view, using a reconstructed image of the base layer generated by the base layer encoder; and an enhancement view enhancement layer encoder which performs multiview encoding on the enhancement layer of the enhancement view, using a reconstructed image of the enhancement layer generated by the enhancement layer encoder. | 08-07-2014 |
| 20140233630 | APPARATUS AND METHOD FOR ADAPTIVE LAYER SELECTION AND SERVER HAVING THE SAME - An apparatus and method for adaptive layer selection and a server having the same are provided. The adaptive layer selecting apparatus includes a monitoring unit monitoring a connection state of at least one channel connected through a communication network, a channel managing unit detecting available channels to be used for providing a service based on a result of the monitoring, and a layer managing unit determining the number of adaptive layers to be used for encoding based on bandwidths of changed available channels when the number of the available channels is changed. | 08-21-2014 |
| 20140233631 | ADAPTIVE CODING OF A PREDICTION ERROR IN HYBRID VIDEO CODING - The present invention relates to a method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal, deciding whether to transform the prediction error signal into the frequency domain, or to maintain the prediction error signal in the spatial domain for encoding. | 08-21-2014 |
| 20140233632 | ADAPTIVE CODING OF A PREDICTION ERROR IN HYBRID VIDEO CODING - The present invention relates to a method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal, deciding whether to transform the prediction error signal into the frequency domain, or to maintain the prediction error signal in the spatial domain for encoding. | 08-21-2014 |
| 20140233633 | METHOD, DEVICE, AND SYSTEM FOR MULTIPLEXING OF VIDEO STREAMS - A method of reproducing at least two digital video sequences. The method includes multiplexing a first digital video sequence with a second digital video sequence, pictures of the second digital video sequence are included in advance in a video stream and are associated with timing information such that a receiver will not decode and reproduce the pictures of the second digital video sequence. The method includes composing the at least two digital video sequences into the video stream in correspondence with a result of the multiplexing and subsequently including a sequence of dummy timing pictures into the video stream. The dummy timing pictures are inter-predicted and are coded by omitting any prediction error data. | 08-21-2014 |
| 20140233634 | METHOD AND DEVICE FOR ENCODING AND DECODING VIDEO - A method and apparatus for encoding and decoding a video are provided. The method of encoding the video includes: determining whether a unidirectional motion estimation mode and a bidirectional motion estimation mode are to be used based on a size of a current prediction unit to be encoded, performing the motion estimation and the motion compensation on the current prediction unit according to the determining of whether the unidirectional motion estimation mode and the bidirectional motion estimation mode are to be used, determining an optimum motion estimation mode of the current prediction unit based on an encoding cost of the current prediction unit obtained through the performing of the motion estimation and the motion compensation, and encoding information indicating the determined optimum motion estimation mode based on the size of the current prediction unit. | 08-21-2014 |
| 20140241415 | ADAPTIVE STREAMING TECHNIQUES - Systems and methods are presented for minimizing the suddenness and immediacy of changes to the video quality perceived by users due to bandwidth fluctuations and transitions between different bitrate streams. A method may include identifying an upcoming bitrate change in a bitstream and a nearest scene cut boundary from sync frame scene cut tags included in the bitstream. The method may include calculating whether waiting until the identified nearest scene cut boundary before changing the bitrate will cause the buffer to drop below a threshold. When the buffer is calculated to not drop below the threshold, the method may postpone the upcoming bitrate change until the identified nearest scene cut boundary. | 08-28-2014 |
| 20140241416 | ADAPTIVE FILTER FOR VIDEO SIGNAL PROCESSING FOR DECODER THAT SELECTS RATE OF SWITCHING BETWEEN 2D AND 3D FILTERS FOR SEPARATION OF CHROMA AND LUMA SIGNALS - An adaptive temporal motion filter for a video decoder system operates in an infinite impulse response (IIR), a max or a bypass mode. The adaptive temporal motion filter includes an adaptive time constant control module and a filter gain module. A gain factor of the filter gain module is varied by the adaptive time constant control module for every pixel in a current composite video signal. The adaptive time constant control module selects a variable gain for the filter gain module based on the motion magnitude, motion polarity and chroma luma status of the pixel. | 08-28-2014 |
| 20140241417 | OFFSET TYPE AND COEFFICIENTS SIGNALING METHOD FOR SAMPLE ADAPTIVE OFFSET - This disclosure describes techniques for performing sample adaptive offset signaling and coding in a video coding process. Techniques of the disclosure include both a merge-based and prediction-based signaling process for sample adaptive offset information (i.e., offset values and offset type). The techniques includes determining offset information for a current partition, comparing the offset information of the current partition with offset information of one or more neighbor partitions, coding a merge instruction in the case that the offset information of one of the one or more neighbor partitions is the same as the offset information of the current partition, and coding one of a plurality of prediction instructions in the case that the offset information of the one or more neighbor partitions is not the same as the offset information of the current partition. | 08-28-2014 |
| 20140241418 | INTER-LAYER PREDICTION BETWEEN LAYERS OF DIFFERENT DYNAMIC SAMPLE VALUE RANGE - The ratio between coding quality on the one hand and coding rate on the other hand is increased. To this end, a global predictor and a local predictor are used in combination. The global predictor derives a global tone-mapping function based on a statistical analysis of pairs of values of co-located samples in the first tone-mapped version and the second version of the picture, and applies the global tone-mapping function onto the first tone-mapped version of the picture. The local predictor locally derives a locally varying tone-mapping function based on a statistical analysis of values of co-located samples in the second version of the picture and the globally predicted reference picture in units of sub-portions into which the globally predicted reference picture and the second version of the picture are partitioned, and applies the locally varying tone-mapping function onto the globally predicted reference picture. | 08-28-2014 |
| 20140247864 | OPTIMIZED CONTENT DELIVERY - Data (e.g., images, video, data fields, character strings, logos, etc.) may be analyzed to identify common elements and differentiating elements, and the elements may be respectively transmitted using different streams. For example, if two devices are receiving two video images that are nearly the same, a first data stream comprising the one or more identified common elements may be sent to them both, a second data stream comprising a portion of the one or more identified differentiating elements may be transmitted to the first device, and a third data stream comprising a different portion of the one or more identified differentiating elements may be transmitted to the second device. | 09-04-2014 |
| 20140247865 | VIDEO ENCODING METHOD AND APPARATUS, VIDEO DECODING METHOD AND APPARATUS, AND PROGRAM THEREFOR - A generated bit amount of filter coefficients of an adaptive interpolation filter is reduced. A video encoding apparatus using motion compensation includes: a motion detection unit which performs motion search to acquire a motion vector; an interpolation filter coefficient deriving unit which calculates interpolation filter coefficients used for interpolation of a decimal-precision pixel using the motion vector; an interpolation unit which performs the interpolation of the decimal-precision pixel using the interpolation filter coefficients and the motion vector and performs encoding, a parameter selection unit which selects a parameter with which a generated bit amount of the interpolation filter coefficients is minimized from among a plurality of designated parameters in parameters used for entropy encoding of the interpolation filter coefficients, and an encoding processing unit which encodes the selected parameter and the calculated interpolation filter coefficients and outputs an encoded parameter and encoded interpolation filter coefficients. | 09-04-2014 |
| 20140247866 | METHOD FOR ENCODING IMAGE, METHOD FOR DECODING IMAGE, IMAGE ENCODER, AND IMAGE DECODER - The present invention relates to a technique for encoding and decoding an image, and a method for encoding the image, according to the present invention, comprises the steps of: performing a prediction with respect to a current block; and transforming a residual which is generated by the prediction, wherein in the step of transforming, a first transform is performed on the residual, and then a second transform is performed on a lower frequency area, and wherein a mode of the second transform can be decided on the basis of a mode of the first transform. | 09-04-2014 |
| 20140254657 | KEY FRAME ALIGNED TRANSCODING USING STATISTICS FILE - Systems and methods are provided for transcoding a set of key frame aligned output files from a source file. A statistics file is generated while transcoding a first output file of the set. Subsequent output files having the same frame size but different bitrates of the set may be created non-sequentially and in parallel using the statistics file. | 09-11-2014 |
| 20140254658 | KEY FRAME ALIGNED TRANSCODING USING KEY FRAME LIST FILE - Systems and methods are provided for transcoding a set of key frame aligned output files from a source file. A key frame list file is generated while transcoding a first output file of the set. Subsequent output files of the set may be created non-sequentially and in parallel using the key frame list file. | 09-11-2014 |
| 20140254659 | VIDEO CODING METHOD USING AT LEAST EVALUATED VISUAL QUALITY AND RELATED VIDEO CODING APPARATUS - One exemplary video coding method includes at least the following steps: utilizing a visual quality evaluation module for evaluating visual quality based on data involved in a coding loop; and referring to at least the evaluated visual quality for deciding a target configuration of at least one of a coding unit, a transform unit and a prediction unit. Another exemplary video coding method includes at least the following steps: utilizing a visual quality evaluation module for evaluating visual quality based on data involved in a coding loop; and referring to at least the evaluated visual quality for deciding a target coding parameter associated with at least one of a coding unit, a transform unit and a prediction unit in video coding. | 09-11-2014 |
| 20140254660 | VIDEO ENCODER, METHOD OF DETECTING SCENE CHANGE AND METHOD OF CONTROLLING VIDEO ENCODER - A video encoder is configured to encode video data in units of macroblocks based on a group of pictures (GOP), the GOP being determined by assigning intra pictures and inter pictures, each intra picture being encoded without reference to other pictures, and each inter picture being encoded with reference to other pictures. The method of controlling the video controller includes determining an encoding mode of each macroblock by performing an intra-picture prediction and an inter-picture prediction, detecting whether each unit of a picture is a scene change based on a result of the intra-picture prediction and the inter-picture prediction for determining the encoding mode of each macroblock, and adaptively setting a size of the GOP based on a result of detecting whether each unit of a picture is the scene change. | 09-11-2014 |
| 20140269896 | Multi-Frame Compression - A system and method for compressing data is provided. An embodiment comprises building an adaptive global codebook for each scene in a sequence of video frames. Each frame in the sequence of frames is encoded based on a different encoding order that facilitates an efficient codebook update. Context models for the currently encoded macroblocks are based on temporally and spatially neighboring macroblocks and a global codebook. | 09-18-2014 |
| 20140269897 | ADAPTIVE SAMPLING FILTER PROCESS FOR SCALABLE VIDEO CODING - A sampling filter process is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system using adaptive phase shifting to improve quality. Examples of a multi-layer encoder or decoder process are MPEG-4 Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC). The re-sampled BL data can be used in encoding or decoding of a corresponding video data of higher layers in a scalable video coding system. For example, the re-sampled or upsampled data can be used as a basis for prediction of the higher resolution video data. | 09-18-2014 |
| 20140269898 | SIMPLIFICATIONS ON DISPARITY VECTOR DERIVATION AND MOTION VECTOR PREDICTION IN 3D VIDEO CODING - A video coder can be configured to perform texture first coding for a first texture view, a first depth view, a second texture view, and a second depth view; for a macroblock of the second texture view, locate a depth block of the first depth view that corresponds to the macroblock; based on at least one depth value of the depth block, derive a disparity vector for the macroblock; code a first sub-block of the macroblock based on the derived disparity vector; and, code a second sub-block of the macroblock based on the derived disparity vector. | 09-18-2014 |
| 20140269899 | IMAGE CODING METHOD AND DEVICE FOR BUFFER MANAGEMENT OF DECODER, AND IMAGE DECODING METHOD AND DEVICE - Provided are methods and apparatuses for encoding and decoding an image. The method of encoding includes: determining a maximum size of a buffer to decode each image frame by a decoder, a number of image frames to be reordered, and latency information of an image frame having a largest difference between an encoding order and a display order from among image frames that form an image sequence, based on an encoding order the image frames that form the image sequence, an encoding order of reference frames referred to by the image frames, a display order of the image frames, and a display order of the reference frames; and adding, to a mandatory sequence parameter set, a first syntax indicating the maximum size of the buffer, a second syntax indicating the number of image frames to be reordered, and a third syntax indicating the latency information. | 09-18-2014 |
| 20140269900 | ENCODING AND DECODING AN IMAGE OR IMAGE SEQUENCE DIVIDED INTO PIXEL BLOCKS - A method and apparatus are provided for coding an image or a sequence of images, generating a data stream including data representative of pixel groups, referred to as blocks, in one of the images. The method includes: grouping blocks in a cluster of blocks according to the proximity of their respective values corresponding to at least one block parameter to be coded; determining a value of the parameter, the value being characteristic of said group of blocks; coding blocks of the cluster, where the values of the blocks for the parameter are coded implicitly by inheritance of the characteristic value or are coded as refinements relative to the characteristic value, and coding a data structure associated with the cluster of blocks, the data structure including data associated with the characteristic value. | 09-18-2014 |
| 20140286391 | SAMPLE ADAPTIVE OFFSET (SAO) PROCESSING APPARATUS REUSING INPUT BUFFER AND OPERATION METHOD OF THE SAO PROCESSING APPARATUS - A sample adaptive offset (SAO) processing apparatus reusing an input buffer and an operation method of the SAO processing apparatus may include a SAO parameter parser to parse SAO parameter information from a bitstream; a SAO parameter adjuster to extract SAO type information and offset information from the parsed SAO parameter information; and a filtering performer to perform filtering on the bitstream based on the SAO type information and the offset information. | 09-25-2014 |
| 20140286392 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE BY USING ADAPTIVE LOOP FILTER ON FREQUENCY DOMAIN USING CONVERSION - A video encoding method for reducing encoding error by using a loop filter is provided, the method including: generating a reconstructed image from encoded data of an original image; determining one or more regions on which the loop filter is applied in the reconstructed image; transforming the original image and the reconstructed image which correspond to each region of the determined one or more regions from a spatial domain into a frequency domain; determining loop filter coefficients for said each region by comparing the transformed original image and the transformed reconstructed image; loop-filtering the reconstructed image based on the loop filter coefficients for said each region; and encoding information on the loop filter coefficients for said each region. | 09-25-2014 |
| 20140286393 | PICTURE CODING METHOD AND PICTURE DECODING METHOD - In a picture coding method for generating a coded signal corresponding to each picture by coding a plurality of coded signals, a switching picture which is capable of switching a plurality of coded signals and subsequent pictures of the switching picture can refer to only a group of pictures of the same time in the coded signals. More specifically, the case where picture numbers of an adjacent picture of an S picture and the S picture are not continuous is not considered as an error. | 09-25-2014 |
| 20140286394 | METHOD AND APPARATUS FOR ENCODING VIDEO, AND METHOD AND APPARATUS FOR DECODING VIDEO - A method of decoding an image includes obtaining information that indicates an intra prediction mode of a current block to be decoded, from a bitstream, the intra prediction mode indicating a particular direction among a plurality of directions, the particular direction being indicated by one of dx number of pixels in a horizontal direction and a fixed number of pixels in a vertical direction, and dy number of pixels in the vertical direction and a fixed number of pixels in the horizontal direction and obtaining a number of neighboring pixels located on one side among a left side of the current block and an upper side of the current block according to a position of a current pixel (j,i) and the particular direction (dx or dy) indicated by the intra prediction mode, when the number of the neighboring pixels is 1, obtaining a prediction value of the current pixel based on the neighboring pixel, and when the number of the neighboring pixels is 2, obtaining the prediction value of the current pixel based on a weighted average of the neighboring pixels. | 09-25-2014 |
| 20140286395 | METHOD AND APPARATUS FOR ENCODING VIDEO BY USING BLOCK MERGING, AND METHOD AND APPARATUS FOR DECODING VIDEO BY USING BLOCK MERGING - Provided are a method and apparatus for encoding a video by using block merging and a method and apparatus for decoding a video by using block merging. The method of encoding includes: determining an encoding mode indicating a current data unit for encoding of a picture and an encoding method including prediction encoding performed for the current data unit; determining an occurrence of merging with at least one neighboring data unit based on at least one of the encoding mode and a prediction mode; and determining prediction mode information, merging related information, and prediction related information, and determining encoding information of the data unit including the prediction mode information, the merging related information, and the prediction related information. | 09-25-2014 |
| 20140286396 | METHOD FOR ENCODING AND DECODING IMAGES BASED ON CONSTRAINED OFFSET COMPENSATION AND LOOP FILTER, AND APPARATUS THEREFOR - Provided are a method and apparatus for encoding and decoding images based on constrained offset compensation and a loop filter. The image decoding apparatus: receives, from an encoder, a first indicator indicating whether a sequence, a picture, a frame, a slice, a coding unit (CU), a prediction unit (PU), and/or a transform unit (TU) supports constrained offset compensation; receives, from the encoder, a second indicator indicating whether constrained sample adaptive offset (SAO) compensation or an adaptive loop filter (ALF) is applied; receives a parameter from the encoder; and applies the SAO compensation or the ALF to pixels of a restored image on the basis of the second indicator and the parameter. | 09-25-2014 |
| 20140286397 | Frame-compatible full-resolution stereoscopic 3D video delivery with symmetric picture resolution and quality - A high resolution 3D image may be encoded into a first multiplexed image frame and a second multiplexed image frame in a base layer (BL) video signal and an enhancement layer (EL) video signal. The first multiplexed image frame may comprise horizontal high resolution image data for both eyes, while the second multiplexed image frame may comprise vertical high resolution image data for both eyes. Encoded symmetric-resolution image data for the 3D image may be distributed to a wide variety of devices for 3D image processing and rendering. A recipient device may reconstruct reduced resolution 3D image from one of the first multiplexed image frame or the second multiplexed image frame. A recipient device may also reconstruct high resolution 3D image by combining high resolution image data from both of the first multiplexed image frame and the second multiplexed image frame. | 09-25-2014 |
| 20140294061 | DEPTH CODING MODES SIGNALING OF DEPTH DATA FOR 3D-HEVC - Techniques are described for encoding and decoding depth data for three-dimensional (3D) video data represented in a multiview plus depth format using depth coding modes that are different than high-efficiency video coding (HEVC) coding modes. Examples of additional depth intra coding modes available in a 3D-HEVC process include at least two of a Depth Modeling Mode (DMM), a Simplified Depth Coding (SDC) mode, and a Chain Coding Mode (CCM). In addition, an example of an additional depth inter coding mode includes an Inter SDC mode. In one example, the techniques include signaling depth intra coding modes used to code depth data for 3D video data in a depth modeling table that is separate from the HEVC syntax. In another example, the techniques of this disclosure include unifying signaling of residual information of depth data for 3D video data across two or more of the depth coding modes. | 10-02-2014 |
| 20140294062 | INTER-LAYER REFERENCE PICTURE RESTRICTION FOR HIGH LEVEL SYNTAX-ONLY SCALABLE VIDEO CODING - In one implementation, an apparatus is provided for encoding or decoding video information. The apparatus comprises a memory unit configured to store reference layer pictures associated with a reference layer, an enhancement layer, or both. The apparatus further comprises a processor operationally coupled to the memory unit. In one embodiment, the processor is configured to restrict usage of at most one reference layer pictures that has been resampled as an inter-layer reference picture, and predict a current picture using inter-layer prediction and the inter-layer reference picture. | 10-02-2014 |
| 20140294063 | INTER-LAYER REFERENCE PICTURE RESTRICTION FOR HIGH LEVEL SYNTAX-ONLY SCALABLE VIDEO CODING - In one implementation, an apparatus is provided for encoding or decoding video information. The apparatus comprises a memory unit configured to store reference layer pictures associated with a reference layer, an enhancement layer, or both. The apparatus further comprises a processor operationally coupled to the memory unit. In one embodiment, the processor is configured to restrict usage of at most one reference layer pictures that has a different spatial resolution than a current picture as an inter-layer reference picture, and predict the current picture using inter-layer prediction and the inter-layer reference picture. | 10-02-2014 |
| 20140294064 | RTP PAYLOAD FORMAT DESIGNS - A device for processing video data includes a memory; a receiver configured to real-time transport protocol (RTP) packets; and one or more processors configured to receive a first fragmentation unit comprising a subset of a fragmented network abstraction layer (NAL) unit; parse a start bit of the fragmentation unit to determine if the first fragmentation unit comprises a start of the fragmented NAL unit; in response to the first fragmentation unit comprising the start of the fragmented NAL unit and one or both of a transmission mode for the first fragmentation unit being a multi-session transmission mode and a first parameter being greater than a first value, parse a second parameter to determine a decoding order for the fragmented NAL unit; decode the fragmented NAL unit based on the determined decoding order. | 10-02-2014 |
| 20140294065 | METHOD AND APPARATUS FOR ENCODING VIDEO, AND METHOD AND APPARATUS FOR DECODING VIDEO - Disclosed is a method of encoding a video, the method including: splitting a current picture into at least one maximum coding unit; determining a coded depth to output a final encoding result according to at least one split region obtained by splitting a region of the maximum coding unit according to depths, by encoding the at least one split region, based on a depth that deepens in proportion to the number of times the region of the maximum coding unit is split; and outputting image data constituting the final encoding result according to the at least one split region, and encoding information about the coded depth and a prediction mode, according to the at least one maximum coding unit. | 10-02-2014 |
| 20140294066 | IMAGE PROCESSING APPARATUS AND METHOD - The present disclosure relates to an image processing apparatus and a method capable of inhibiting a decrease in coding efficiency. | 10-02-2014 |
| 20140294067 | METHOD AND DEVICE FOR ENCODING AND DECODING PARAMETER SETS AT SLICE LEVEL - Provided is a method for encoding parameter sets at slice level. The method includes: when there are one or more parameter sets, in which the coding tool parameters are identical to the coding tool parameters of a part of coding tools used for the current slice, in the existing parameter sets, encoding the identifiers of parameter sets into bit-stream of the current slice, wherein a parameter set contains common information of the coding tools used in the process of encoding/decoding slice(s). Correspondingly, also provided is a method for decoding parameter sets at slice level and a device for encoding and decoding parameter sets at slice level, which can make full use of the encoded parameter set information when the slice header refers to a plurality of parameter sets, implement flexible configuration of the coding tools used in the process of encoding/decoding slice(s) and reduce information redundancy. | 10-02-2014 |
| 20140294068 | Sample Adaptive Offset Compensation of Video Data - A method of sample adaptive offset (SAO) compensation of video data is disclosed, where pixels in the video data are classified into SAO categories, each SAO category representing a possible edge artefact and defining a corresponding offset value to be applied to pixels in the respective SAO category to compensate for the edge artefact. In the method, a plurality of SAO categories ( | 10-02-2014 |
| 20140301436 | CROSS-LAYER ALIGNMENT IN MULTI-LAYER VIDEO CODING - An apparatus for coding video information according to certain aspects includes a memory unit and a video processor in communication with the memory unit. The video processor is configured to identify a first picture included in the first set of pictures, wherein pictures within the first set of pictures having an output position after the output position of the first picture also have a decoding position after the decoding position of the first picture. The video processor is further configured to identify a second picture included in the second set of pictures, wherein pictures within the second set of pictures having an output position after the output position of the second pictures also have a decoding position after the decoding position of the second picture. The video processor is also configured to code the identified first picture and the identified second picture via one syntax element into one access unit. | 10-09-2014 |
| 20140301437 | PICTURE ALIGNMENTS IN MULTI-LAYER VIDEO CODING - A video encoder generates an encoded video bitstream comprising a plurality of layers. At least one access unit of the encoded video bitstream includes one or more Instantaneous Decoding Refresh (IDR) pictures and one or more non-IDR pictures. The IDR pictures include only slices that are decoded using intra prediction only. The video encoder outputs the encoded video bitstream. A video decoder decodes the encoded video bitstream. | 10-09-2014 |
| 20140301438 | SAMPLE ADAPTIVE OFFSET SCALING BASED ON BIT-DEPTH - This disclosure provides systems, methods and apparatus for sample adaptive offset (SAO) scaling. For example, the apparatus may include a processor configured to determine an offset value for an SAO filter applied to video data to improve reconstruction of signal amplitudes in the video data. The processor may be further configured to determine a first value indicative of a bit depth and a second value indicative of a scale factor for the video data, to provide a scaled offset value based on applying the scale factor to the offset value, and to scale at least one color component of the video data according to the scaled offset value. The processor may also be configured to identify an edge offset category for a scaled group of neighboring pixel values, and to adjust the SAO filter based on the identified edge offset category. | 10-09-2014 |
| 20140301439 | CROSS-LAYER POC ALIGNMENT FOR MULTI-LAYER BITSTREAMS THAT MAY INCLUDE NON-ALIGNED IRAP PICTURES - In one example, a video coder is configured to code a value for a syntax element indicating whether at least a portion of a picture order count (POC) value of a picture is to be reset to a value of zero, when the value for the syntax element indicates that the portion of the POC value is to be reset to the value of zero, reset at least the portion of the POC value such that the portion of the POC value is equal to zero, and code video data using the reset POC value. Coding video data using the reset POC value may include inter-predicting a block of a subsequent picture relative to the picture, where the block may include a motion parameter that identifies the picture using the reset POC value. The block may be coded using temporal inter-prediction or inter-layer prediction. | 10-09-2014 |
| 20140301440 | SIGNALING FOR ADDITION OR REMOVAL OF LAYERS IN VIDEO CODING - In one embodiment, a method determines an encoded plurality of layers for a scalable video stream for a video where each of the plurality of layers includes a respective layer parameter setting. An additional layer for the plurality of layers is determined where the additional layer enhances a base layer in the plurality of layers and the respective layer parameter settings for the encoded plurality of layers do not take into account the additional layer. The method then determines an additional layer parameter setting for the additional layer. The additional layer parameter setting specifies a relationship between the additional layer and at least a portion of the plurality of layers where the additional layer parameter setting is used to decode the additional layer and the at least a portion of the plurality of layers. | 10-09-2014 |
| 20140301441 | NON-ENTROPY ENCODED SET OF PROFILE, TIER, AND LEVEL SYNTAX STRUCTURES - Systems, methods, and devices for coding multilayer video data are disclosed that may include, encoding, decoding, transmitting, or receiving a non-entropy encoded set of profile, tier, and level syntax structures, potentially at a position within a video parameter set (VPS) extension. The systems, methods, and devices may refer to one of the profile, tier, and level syntax structures for each of a plurality of output layer sets. The systems, methods, and devices may encode or decode video data of one of the output layer sets based on information from the profile, tier, and level syntax structure referred to for the output layer set. | 10-09-2014 |
| 20140301442 | METHODS AND APPARATUS FOR USING SYNTAX FOR THE CODED_BLOCK_FLAG SYNTAX ELEMENT AND THE CODED_BLOCK_PATTERN SYNTAX ELEMENT FOR THE CAVLC 4:4:4 INTRA, HIGH 4:4:4 INTRA, AND HIGH 4:4:4 PREDICTIVE PROFILES IN MPEG-4 AVC HIGH LEVEL CODING - There are provided methods and apparatus for using syntax for the coded_block_flag syntax element for the CAVLC 4:4:4 Intra, High 4:4:4 Intra, and High 4:4:4 Predictive profiles in MPEG-4 AVC high level coding. An apparatus includes an encoder ( | 10-09-2014 |
| 20140301443 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - The image coding method includes: determining a context for a current block to be processed, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is one of “mvd_l0” and “mvd_l1”. | 10-09-2014 |
| 20140301444 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - The image coding method includes: determining a context in a current block in the image, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “no_residual_data_flag”, (vi) “intra_chroma_pred_mode”, (vii) “cbf_luma”, and (viii) “cbf_cb” or “cbf_cr”. | 10-09-2014 |
| 20140301445 | IMAGE DECODING METHOD AND IMAGE CODING METHOD - An image decoding method is an image decoding method of decoding coded image data, including selecting, based on a type of a decoding target signal, an arithmetic decoding method that is used to decode the decoding target signal, from among a plurality of arithmetic decoding methods that include: a first arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which involves update of the symbol occurrence probability according to a decoding symbol; and a second arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which maintains the symbol occurrence probability that is other than 50%. | 10-09-2014 |
| 20140301446 | MOTION VECTOR CODING APPARATUS, METHOD AND PROGRAM FOR CODING MOTION VECTOR, MOTION VECTOR DECODING APPARATUS, AND METHOD AND PROGRAM FOR DECODING MOTION VECTOR - According to exemplary embodiments of the present invention, references to a motion vector in a neighboring block of an enhancement layer or in a block of a previously coded picture, and a motion vector of a base layer are equally handled. Accordingly, a motion_prediction_flag with identification information can be integrated for further improved coding efficiency. | 10-09-2014 |
| 20140307771 | RESOURCE FOR ENCODING A VIDEO SIGNAL - An apparatus for encoding video data, the apparatus comprising a compliance module configured to compare a resource requirement associated with encoding video data to form at least part of an encoded frame using a standard encoding mode with an acceptable resource level and an encoder configured to, responsive to a determination that the resource requirement will exceed the acceptable resource level, form the at least part of an encoded frame by encoding some of the video data using the standard encoding mode and filling a remainder of the at least part of the encoded frame with data that is associated with a lower resource usage than data generated using the standard encoding mode. | 10-16-2014 |
| 20140307772 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus includes a decoding unit, a deblocking filter, and a sample adaptive offset processing unit. The decoding unit is configured to perform a decoding process for a coded stream to generate an image. The deblocking filter is configured to store a block, a corresponding block of which on a current edge is not input, in a memory, out of blocks of the image generated by the decoding unit and read the block stored in the memory at timing when the corresponding block is input, to perform a filter process. The sample adaptive offset processing unit is configured to perform a sample adaptive offset process by using a pixel of the block that has been subjected to the filter process by the deblocking filter. | 10-16-2014 |
| 20140307773 | RE-SAMPLING WITH PHASE OFFSET ADJUSTMENT FOR LUMA AND CHROMA TO SELECT FILTERS IN SCALABLE VIDEO CODING - A sampling filter process is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system using adaptive phase shifting to improve quality in Scalable High efficiency Video Coding (SHVC). In order to compensate for phase offsets introduced by downsampling an appropriate phase offset adjustment is made for upsampling in SHVC with an appropriate offset included for proper luma/chroma color space positions. In one approach the luma/chroma phase offset is specified and a filter is selected to apply the appropriate phase change. | 10-16-2014 |
| 20140307774 | RE-SAMPLING WITH PHASE OFFSET ADJUSTMENT FOR LUMA AND CHROMA TO SIGNAL ADAPTIVE FILTERS IN SCALABLE VIDEO CODING - A sampling filter process is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system using adaptive phase shifting to improve quality in Scalable High efficiency Video Coding (SHVC). In order to compensate for phase offsets introduced by downsampling an appropriate phase offset adjustment is made for upsampling in SHVC with an appropriate offset included for proper luma/chroma color space positions. In one approach, an adaptive filter is signaled with its phase offset adjusted to account for the luma/chroma offset. | 10-16-2014 |
| 20140307775 | METHOD AND DEVICE FOR PARTITIONING AN IMAGE - A method and device for partitioning an image for transmission of one or more regions of interest of said image, the image being composed of coding units, the method comprising:
| 10-16-2014 |
| 20140307776 | VIDEO CODING / DECODING WITH RE-ORIENTED TRANSFORMS AND SUB-BLOCK TRANSFORM SIZES - Techniques and tools for video coding/decoding with sub-block transform coding/decoding and re-oriented transforms are described. For example, a video encoder adaptively switches between 8×8, 8×4, and 4×8 DCTs when encoding 8×8 prediction residual blocks; a corresponding video decoder switches between 8×8, 8×4, and 4×8 inverse DCTs during decoding. The video encoder may determine the transform sizes as well as switching levels (e.g., frame, macroblock, or block) in a closed loop evaluation of the different transform sizes and switching levels. When a video encoder or decoder uses spatial extrapolation from pixel values in a causal neighborhood to predict pixel values of a block of pixels, the encoder/decoder can use a re-oriented transform to address non-stationarity of prediction residual values. | 10-16-2014 |
| 20140307777 | CODING OF TRANSFORM COEFFICIENTS FOR VIDEO CODING - This disclosure describes devices and methods for coding transform coefficients associated with a block of residual video data in a video coding process. Aspects of this disclosure include the selection of a scan order for both significance map coding and level coding, as well as the selection of contexts for entropy coding consistent with the selected scan order. This disclosure proposes a harmonization of the scan order to code both the significance map of the transform coefficients as well as to code the levels of the transform coefficient. It is proposed that the scan order for the significance map should be in the inverse direction (i.e., from the higher frequencies to the lower frequencies). This disclosure also proposes that transform coefficients be scanned in sub-sets as opposed to fixed sub-blocks. In particular, transform coefficients are scanned in a sub-set consisting of a number of consecutive coefficients according to the scan order. | 10-16-2014 |
| 20140307778 | CODING OF RESIDUAL DATA IN PREDICTIVE COMPRESSION - Encoding input data includes: generating a first block of coefficients based on a transform performed on a residual block of data for multiple pixels; generating reference information based on a reference block of data corresponding to the residual block of data; and determining losslessly decodable code values representing the first block of coefficients based on the reference information. | 10-16-2014 |
| 20140307779 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND PROGRAM - A video encoding device includes: a transformer for transforming an image block; an entropy encoder for entropy-encoding transformed data of the image block transformed by the transformer; a PCM encoder for PCM-encoding an image block; a multiplexed data selector for selecting output data of the entropy encoder or output data of the PCM encoder, for each block of an externally set block size; and a multiplexer for embedding a PCM header into a bitstream, in a block of the externally set block size, wherein the number of successive PCM-encoded blocks is embedded into the PCM header, and PCM data for the number of successive PCM-encoded blocks is multiplexed into the bitstream. | 10-16-2014 |
| 20140314139 | System and Method for Adaptive Bandwidth Management - System and method embodiments are provided for adaptive bandwidth management for transporting rendered graphics in a virtual desktop infrastructure. The embodiments include a video detection algorithm that enables a driver for a graphics processor at the server's end to identify displayed video data at the user's end. The driver identifies video traffic that is sent to the user device by tracking repeated bitmap operations at the same display area or block of an application displayed window at the user device. When the number of bitmap operations reaches a pre-determined threshold, then the corresponding area is considered a video display area. When detecting that a bandwidth threshold for transporting graphics data from the server to the device is reached, the data corresponding to the detected video area is compressed using a higher compression rate, thus increasing the loss rate of transferred video data to improve playback experience for the user. | 10-23-2014 |
| 20140314140 | INDICATION OF CROSS-LAYER PICTURE TYPE ALIGNMENT IN MULTI-LAYER VIDEO CODING - In one example, the disclosure is directed to techniques that include receiving a bitstream comprising at least a syntax element, a first network abstraction layer unit type, and a coded access unit comprising a plurality of pictures. The techniques further include determining a value of the syntax element which indicates whether the access unit was coded using cross-layer alignment. The techniques further include determining the first network abstraction layer unit type for a picture in the access unit and determining whether the first network abstraction layer unit type equals a value in a range of type values. The techniques further include setting a network abstraction layer unit type for all other pictures in the coded access unit to equal the value of the first network abstraction layer unit type if the first network abstraction layer unit type is equal to a value in the range of type values. | 10-23-2014 |
| 20140314141 | VIDEO ENCODING METHOD AND APPARATUS, AND VIDEO DECODING METHOD AND APPARATUS BASED ON SIGNALING OF SAMPLE ADAPTIVE OFFSET PARAMETERS - Signaling of a sample adaptive offset (SAO) parameter determined to minimize an error between an original image and a reconstructed image during video encoding and decoding operations. A video encoding method of signaling an SAO parameter includes, from among largest coding units (LCUs) of a video, obtaining prediction information before de-blocking of a currently encoded LCU is performed; predicting an SAO parameter of the currently encoded LCU based on the obtained prediction information; and performing entropy encoding on the predicted SAO parameter. | 10-23-2014 |
| 20140314142 | APPARATUS OF DECODING VIDEO DATA - Provided is an apparatus that derives a luma intra prediction mode and a chroma intra prediction mode, determines a size of a luma transform unit and a size of a chroma transform unit using luma transform size information, adaptively filters the reference pixels of a current luma block based on the luma intra prediction mode and the size of the luma transform unit, generates prediction blocks of the current luma block and the current current block and generates a residual luma residual block and a chroma residual block. Therefore, the distance of intra prediction becomes short, and the amount of coding bits required to encode intra prediction modes and residual blocks of luma and chroma components is reduced and the coding complexity is reduced by adaptively encoding the intra prediction modes and adaptively filtering the reference pixels. | 10-23-2014 |
| 20140314143 | METHOD AND APPARATUS FOR COEFFICIENT SCAN BASED ON PARTITION MODE OF PREDICTION UNIT - Provided are a method and an apparatus for coefficient scan on the base of a partition mode of a prediction unit. The method comprises the steps of: determining a scan method on the basis of a partition mode of a prediction unit; and encoding the information about the scan method, wherein the scan method is determined, on the basis of RDO (Rate Distortion optimization), from among the extracted candidate scan methods which have been extracted with consideration of the shapes of the partitions of the partition mode. | 10-23-2014 |
| 20140314144 | METHOD FOR ENCODING AND DECODING IMAGES, ENCODING AND DECODING DEVICE, AND CORRESPONDING COMPUTER PROGRAMS - A method for encoding an image having been cut up into partitions. The method includes: predicting data of a current partition based on an already encoded and then decoded reference partition, generating a predicted partition; determining residual data by comparing data relating to the current partition with the predicted partition, the residual data associated with various digital data items. Prior producing a signal containing the encoded information, performing the following steps: determining, from the predetermined residual data, a subset containing residual data capable of being modified; calculating the value of a function representative of the residual data; comparing the calculated value with a value of at least one of the digital data items; based on the comparison, modification or non-modification of at least one of the residual data items of the subset; and, in the event of a modification, entropy encoding the at least one modified residual data item. | 10-23-2014 |
| 20140321528 | VIDEO ENCODING AND/OR DECODING METHOD AND VIDEO ENCODING AND/OR DECODING APPARATUS - The present invention relates to a method and apparatus for processing a video, wherein the apparatus includes a controller to parse a parameter set from an input bitstream and a plurality of video processing units to process video data by a frame unit in parallel based on the parsed parameter set according to control by the controller, wherein the video processing units sequentially decode different frames at an interval determined based on a motion vector range in the parameter set. | 10-30-2014 |
| 20140321529 | VIDEO ENCODING AND/OR DECODING METHOD AND VIDEO ENCODING AND/OR DECODING APPARATUS - Disclosed is a video processing apparatus. The video processing apparatus includes a video central processing unit to communicate with a host and to parse parameter information or slice header information from video data input from the host, and a plurality of video processing units to process a video based on the parsed information according to control by the central video processing unit, wherein the video central processing unit determines an entry point of a video bitstream to be allocated to each of the video processing units in view of a number of pixels to be processed by each video processing unit. | 10-30-2014 |
| 20140321530 | QUALITY SCALABLE CODING WITH MAPPING DIFFERENT RANGES OF BIT DEPTHS - A more efficient way of addressing different bit-depths, or different bit-depths and chroma sampling format requirements is achieved by using a low bit-depth and/or low-chroma resolution representation for providing a respective base layer data stream representing this low bit-depth and/or low-chroma resolution representation as well as for providing a higher bit-depth and/or higher chroma resolution representation so that a respective prediction residual may be encoded in order to obtain a higher bit-depth and/or higher chroma resolution representation. By this measure, an encoder is enabled to store a base-quality representation of a picture or a video sequence, which can be decoded by any legacy decoder or video decoder, together with an enhancement signal for higher bit-depth and/or reduced chroma sub-sampling, which may be ignored by legacy decoders or video decoders. | 10-30-2014 |
| 20140321531 | VARIABLE LENGTH CODING METHOD AND VARIABLE LENGTH DECODING METHOD - A variable length coding method is comprised of: a coefficient value scanning step in which an RL sequence generation unit, a reordering unit, and a binarization unit scan coefficient values within a block in a predetermined scanning order starting at a higher-frequency component toward a lower-frequency component; and an arithmetic coding step in which an arithmetic coding unit and a table storage unit perform arithmetic coding on the absolute values of the coefficient values according to the scanning order used in the coefficient value scanning step, by switching between probability tables for use, wherein, in the arithmetic coding step, a probability table to be used is switched to another probability table in one direction, when the arithmetic-coded absolute values of the coefficient values include an absolute value exceeding a predetermined threshold value. | 10-30-2014 |
| 20140328384 | METHODS AND APPARATUSES INCLUDING A STATISTICAL MULTIPLEXER WITH GLOBAL RATE CONTROL - Examples methods and apparatuses including a statistical multiplexer with global rate control are described herein. An example apparatus may include a statistical multiplexing (statmux) system coupled to a communication link. The statmux system includes a global rate controller and a plurality of encoders. Each encoder of the plurality of encoders may receive data from a respective channel of a plurality of channels. The global rate controller may buffer respective coding units of at least two of the plurality of channels and estimate respective sizes of buffered coding units of the buffered respective coding units. The global rate controller may provide a quality parameter to the plurality of encoders having a value based on the estimated coded sizes of the buffered coding units. | 11-06-2014 |
| 20140328385 | IMAGE PROCESSING DEVICE AND METHOD - The present disclosure relates to an image processing device and method enabling suppression of deterioration in encoding efficiency due to high speed image encoding. | 11-06-2014 |
| 20140328386 | IMAGE PROCESSING DEVICE AND METHOD - The present disclosure relates to an image processing device and method enabling suppression of deterioration in encoding efficiency due to high speed image encoding. | 11-06-2014 |
| 20140328387 | CONTENT ADAPTIVE FUSION FILTERING OF PREDICTION SIGNALS FOR NEXT GENERATION VIDEO CODING - Techniques related to fusion improvement filtering of prediction signals for video coding are described. | 11-06-2014 |
| 20140328388 | METHOD AND DEVICE FOR ENCODING VIDEO TO LIMIT BIDIRECTIONAL PREDICTION AND BLOCK MERGING, AND METHOD AND DEVICE FOR DECODING VIDEO - Provided are a method and apparatus for encoding a video and a method and apparatus for decoding a video. The method of encoding includes: determining, for a current block, bidirectional motion estimation information comprising an L0 motion vector, an L1 motion vector, an L0 reference vector, and an L1 reference picture by performing bidirectional motion estimation on the current block; determining whether to use the determined bidirectional motion estimation information as prediction information of the current block based on whether the L0 reference picture and the L1 reference picture are the same and based on a difference value between the L0 motion vector and the L1 motion vector; and in response to determining to use the determined bidirectional motion estimation information as the prediction information of the current block, encoding the determined bidirectional motion estimation information as the prediction information of the current block. | 11-06-2014 |
| 20140328389 | METHOD AND APPARATUS OF TEXTURE IMAGE COMPRESSION IN 3D VIDEO CODING - A method and apparatus for 3D video coding system are disclosed. Embodiments according to the present invention apply SAO process (sample adaptive offset process) to at least one dependent-view image of the processed multi-view images if processed multi-view images are received. Also embodiments according to the present invention apply the SAO process to at least one dependent-view image of the processed multi-view images or at least one depth map of the processed multi-view depth maps if both processed multi-view images and the processed multi-view depth maps are received. The SAO can be applied to each color component of the processed multi-view images or the processed multi-view depth maps. The SAO parameters associated with a target region in one dependent-view image or in one depth map corresponding to one view may share or may be predicted by second SAO parameters associated with a source region corresponding to another view. | 11-06-2014 |
| 20140334532 | SYSTEMS, APPARATUSES, AND METHODS FOR TRANSCODING A BITSTREAM - Examples of systems, apparatuses, and methods for to transcoding a bitstream are described herein. An example content distribution system may include an interconnect configured to provide encoded video data from an encoder to a decoder. The interconnect is configured to receive a bitstream including the encoded video data from the encoder. The bitstream is encoded using a first lossless coding methodology. The interconnect including a transcoder configured to transcode the bitstream using a second lossless coding methodology to provide a transcoded bitstream. | 11-13-2014 |
| 20140334533 | System And Method For Adaptive Coding Tree Mode Decision - A system and method for encoding video is provided. The system may partition a video frame into multiple coding units. The system may determine a memory bandwidth budget and selectively code each coding unit based on a memory cost as compared to the memory bandwidth budget. | 11-13-2014 |
| 20140334534 | SUB-BLOCK TRANSFORM CODING OF PREDICTION RESIDUALS - Techniques and tools for sub-block transform coding are described. For example, a video encoder adaptively switches between 8×8, 8×4, and 4×8 DCTs when encoding 8×8 prediction residual blocks; a corresponding video decoder switches between 8×8, 8×4, and 4×8 inverse DCTs during decoding. The video encoder may determine the transform sizes as well as switching levels (e.g., frame, macroblock, or block) in a closed loop evaluation of the different transform sizes and switching levels. The encoder and decoder may use different scan patterns for different transform sizes when scanning values from two-dimensional blocks into one-dimensional arrays, or vice versa. The encoder and decoder may use sub-block pattern codes to indicate the presence or absence of information for the sub-blocks of particular blocks. | 11-13-2014 |
| 20140334535 | METHOD AND APPARATUS FOR ENCODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE, AND METHOD AND APPARATUS FOR DECODING VIDEO IN CONSIDERATION OF SCANNING ORDER OF CODING UNITS HAVING HIERARCHICAL STRUCTURE - A method and apparatus for decoding a video and a method and apparatus for encoding a video are provided. The method for decoding the video includes: receiving and parsing a bitstream of an encoded video; extracting, from the bitstream, encoded image data of a current picture of the encoded video assigned to a maximum coding unit, and information about a coded depth and an encoding mode according to the maximum coding unit; and decoding the encoded image data for the maximum coding unit based on the information about the coded depth and the encoding mode for the maximum coding unit, in consideration of a raster scanning order for the maximum coding unit and a zigzag scanning order for coding units of the maximum coding unit according to depths. | 11-13-2014 |
| 20140334536 | SIGNALING SIGNED BAND OFFSET VALUES FOR SAMPLE ADAPTIVE OFFSET (SAO) FILTERING IN VIDEO CODING - A method for signaling sample adaptive offset (SAO) band offset syntax elements in a video encoder is provided that includes receiving a plurality of band offset syntax elements, entropy encoding an absolute value of a magnitude of each band offset syntax element in a compressed video bit stream, and entropy encoding a sign of each non-zero band offset syntax element in the compressed video bit stream following the absolute values of the magnitudes. | 11-13-2014 |
| 20140334537 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - The present technology is related to an image processing device and image processing method that enables the generating of 3D images that can be viewed safely and comfortably. | 11-13-2014 |
| 20140341270 | APPARATUS AND METHOD FOR SKIPPING FRACTIONAL MOTION ESTIMATION IN HIGH EFFICIENCY VIDEO CODING - An apparatus and method for skipping fractional motion estimation (FME) in high efficiency video coding (HEVC) are disclosed. The apparatus includes a current sum of absolute differences (SAD) acquisition unit, a redundancy determination unit, and a motion estimation skip unit. The SAD acquisition unit acquires the SAD from an integer motion estimation (IME) unit when the IME unit performs IME on a coding tree block (CTB). The redundancy determination unit determines whether or not the CTB is an estimated redundant block using the current SAD. The motion estimation skip unit provides an FME unit with an FME skip signal of the CTB depending on whether or the CTB is an estimated redundant block. | 11-20-2014 |
| 20140341271 | METHOD AND APPARATUS OF HEVC DE-BLOCKING FILTER - A method of de-blocking filtering a processed video is provided. The processed video includes a plurality of blocks and each block includes a plurality of sub-blocks. A current block of the plurality of blocks includes vertical edges and horizontal edges. The processed video further includes a set of control parameters and reconstructed pixels corresponding to the current block. A boundary strength index is estimated at the vertical edges and at the horizontal edges of the current block. The set of control parameters, the reconstructed pixels corresponding to the current block and partially filtered pixels corresponding to a set of adjacent sub-blocks are loaded. The vertical edges and the horizontal edges of the current block are filtered based on the boundary strength index and the set of control parameters such that a vertical edge of the current block is filtered before filtering at least one horizontal edge of the current block. | 11-20-2014 |
| 20140341272 | Method and System for Backward Compatible, Extended Dynamic Range Encoding of Video - In some embodiments, an encoding method for generating an extended dynamic range (EDR) channel in response to an input video channel, such that the EDR channel's code values consist of code values in a range from a standard black level, X, through a standard white level, Z, and an additional code value set. The EDR channel is displayable with standard dynamic range and standard precision by a standard dynamic range video system which maps to the level, X, any of the EDR channel's values less than X, and maps to the level, Z, any of the EDR channel's values greater than Z, and is displayable with an extended dynamic range greater than the standard dynamic range and/or a precision greater than the standard precision by an EDR video system. Other aspects are systems configured to perform embodiments of the encoding method, and methods and systems for displaying EDR video. | 11-20-2014 |
| 20140341273 | Hybrid Reference Picture Reconstruction Method for Single and Multiple Layered Video Coding Systems - An inter-layer reference picture is generated either by considering an inverse mapped signal from a base layer, a temporal signal from an enhancement layer, or a combination of both. | 11-20-2014 |
| 20140341274 | CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT WITHIN A VIDEO BLOCK BASED ON A SCANNING ORDER FOR THE BLOCK IN VIDEO CODING - In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to a scanning order associated with the block when the scanning order comprises a first scanning order, and code interchanged x- and y-coordinates that indicate the position of the last non-zero coefficient within the block according to the scanning order when the scanning order comprises a second scanning order, wherein the second scanning order is different than the first scanning order. | 11-20-2014 |
| 20140341275 | SIGNALING PICTURE SIZE IN VIDEO CODING - A video encoder is configured to determine a picture size for one or more pictures included in a video sequence. The picture size associated with the video sequence may be a multiple of an aligned coding unit size for the video sequence. In one example, the aligned coding unit size for the video sequence may comprise a minimum coding unit size where the minimum coding unit size is selected from a plurality of smallest coding unit sizes corresponding to different pictures in the video sequence. A video decoder is configured to obtain syntax elements to determine the picture size and the aligned coding unit size for the video sequence. The video decoder decodes the pictures included in the video sequence with the picture size, and stores the decoded pictures in a decoded picture buffer. | 11-20-2014 |
| 20140348222 | Method of Sample Adaptive Offset Processing for Video Coding and Inter-Layer Scalable Coding - A method of SAO (sample-adaptive offset) processing is disclosed, where EO classification is based on a composite EO type group. The composite EO type group comprises at least one first EO type from a first EO type group and at least one second EO type from a second EO type group. The first EO type group determines the EO classification based on the current reconstructed pixel and two neighboring reconstructed pixels, and the second EO type group determines the EO classification based on weighted outputs of the current reconstructed pixel and a number of neighboring reconstructed pixels. A method of inter-layer SAO processing is also disclosed. An inter-layer reference picture for an enhancement layer is generated from the BL reconstructed picture and the inter-layer SAO information is determined, where at least a portion of the inter-layer SAO information is predicted or re-used from the BL SAO information. | 11-27-2014 |
| 20140348223 | METHOD FOR ENCODING AND DECODING IMAGES, ENCODING AND DECODING DEVICE, AND CORRESPONDING COMPUTER PROGRAMS - A method is provided for coding at least one image split up into partitions, a current partition to be coded containing data, at least one data item of which is allotted a sign. The coding method includes, for the current partition, the following steps: calculating the value of a function representative of the data of the current partition with the exclusion of the sign; comparing the calculated value with a predetermined value of the sign; as a function of the result of the comparison, modifying or not modifying at least one of the data items of the current partition, in the case of modification, coding the at least one modified data item. | 11-27-2014 |
| 20140348224 | ADAPTIVE VIDEO PROCESSING OF AN INTERACTIVE ENVIRONMENT - Embodiments are configured to provide interactive communication functionality including adaptive video processing functionality that can be used to process aspects of a video signal, but the embodiments are not so limited. In an embodiment, components of a video conferencing system can operate to provide a video signal based in part on the use of adaptive processing features which include scaling and/or other pixel processing features. In one embodiment, components of an interactive video system can operate to adaptively manage and control video payload parameters to adapt to various communication conditions associated with a real-time or near-real time interactive video environment. | 11-27-2014 |
| 20140348225 | METHOD AND APPARATUS FOR MULTIPLE DESCRIPTION VIDEO CODING - An encoder includes a controller to determine whether macroblocks of a frame of video content are to be processed by intra-frame encoding or by predictive coding. The encoder includes a switch coupled to the controller. The encoder includes an intra-frame unit to receive the macroblocks via the switch when the controller determines to process the macroblocks by intra-frame encoding. The encoder includes a predictive unit to receive the macroblocks via the switch when the controller determines to process the macroblocks by predictive encoding. The encoder also includes a redundancy allocation unit coupled to the controller. The controller determines whether to process the macroblocks by intra-frame encoding or predictive frame encoding based on information received from the redundancy allocation unit. | 11-27-2014 |
| 20140355664 | OPTIMIZING VIDEO TRANSFER - Methods of optimised video transfer are described in which display data is divided into a plurality of portions, each portion corresponding to a class of image data, and the different portions are encoded for transmission to a remote display device using different encoding schemes. In an embodiment, the composite display data is never rendered at the source device and instead portions of display data are generated by an application based on an advertised set of classes of image data. In other embodiments, the composite display data is stored in a framebuffer at the source device and is split into portions according to a classification of the display data. In various embodiments the classification may be performed based on sniffing graphics commands used to generate the composite display data and in other embodiments, the classification may be performed based on a rate of change of pixels in the composite display data. | 12-04-2014 |
| 20140355665 | Adaptive Video Reference Frame Compression with Control Elements - An access encoder reduces power consumption during video playback and recording by reducing the bandwidth between a processor and a memory. A graphical user interface allows user selection, or software control, over the tradeoff between battery life and video quality. Battery life can be increased (decreased) by activating the access encoder. The access encoder may be implemented in a microprocessor, graphics processor, digital signal processor, FPGA, ASIC, or SoC. The access encoder's encoding/decoding can reduce memory and storage bottlenecks, processor access time, and processor and memory power consumption. A user interface allows users to adjust the tradeoff between decoded video quality and battery life for a mobile device. This abstract does not limit the scope of the invention as described in the claims. | 12-04-2014 |
| 20140355666 | ADVANCED DEPTH INTER CODING BASED ON DISPARITY OF DEPTH BLOCKS - In one example, the disclosure is directed to techniques that include, for each prediction unit (PU) of a respective coding unit (CU) of a slice of a picture of the video data, determining at least one disparity value based at least in part on at least one depth value of at least one reconstructed depth sample of at least one neighboring sample. The techniques further include determining at least one disparity vector based at least in part on the at least one disparity value, wherein the at least one disparity vector is for the respective CU for each PU. The techniques further include reconstructing, based at least in part on the at least one disparity vector, a coding block for the respective CU for each PU. | 12-04-2014 |
| 20140355667 | METHOD AND APPARATUS OF LUMA-BASED CHROMA INTRA PREDICTION - A method and apparatus for luma-based chroma intra prediction for a current chroma block are disclosed. The chroma intra predictor is derived from reconstructed luma pixels of a current luma block according to the chroma sampling format. Depending on the chroma sampling format, either sub-sampling, down-sampling or no processing is applied to the reconstructed luma pixels in horizontal or vertical direction. The information associated with the chroma sampling format can be incorporated in the sequence parameter set (SPS), the picture parameter set (PPS), the adaptation parameter set (APS) or the slice header of a video bitstream. | 12-04-2014 |
| 20140355668 | Method and System for Controlling Video Frame Encoding - A method of enabling iterative encoding of a video frame by a video encoder, comprising obtaining a video-encoder-state resulting from encoding of a previous input video frame and previous to encoding of a current input video frame, copying the video-encoder-state giving rise to a reserved state and obtaining a candidate current encoded video frame from the video encoder, and in case the candidate current encoded video frame does not meet an encoding criterion, copying the reserved state back to the video encoder to enable the video encoder to re-encode the current input video frame. | 12-04-2014 |
| 20140355669 | CONTEXT REDUCTION FOR CONTEXT ADAPTIVE BINARY ARITHMETIC CODING - A reduction in the number of binarizations and/or contexts used in context adaptive binary arithmetic coding (CABAC) for video coding is proposed. In particular, this disclosure proposes techniques that may lower the number contexts used in CABAC by up to 56. | 12-04-2014 |
| 20140355670 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - A deblocking filter | 12-04-2014 |
| 20140362902 | INTER-LAYER PREDICTION TYPES IN MULTI-LAYER VIDEO CODING - An apparatus for coding video information according to certain aspects includes computing hardware. The computing hardware is configured to: identify a current picture to be predicted using at least one type of inter layer prediction (ILP), the type of ILP comprising one or more of inter layer motion prediction (ILMP) or inter layer sample prediction (ILSP); and control: (1) a number of pictures that may be resampled and used to predict the current picture using ILMP and (2) a number of pictures that may be resampled and used to predict the current picture using ILSP, wherein the computing hardware is configured to control the number of pictures that may be resampled and used to predict the current picture using ILMP independent of the number of pictures that may be resampled and used to predict the current picture using ILSP. | 12-11-2014 |
| 20140362903 | Method and Apparatus For Improved Coding Mode Selection - In this disclosure, a novel method for direct mode enhancement in B-pictures and skip mode enhancement in P-pictures in the framework of H.264 (MPEG-4/Part 10) is disclosed. Direct mode and skip mode enhancements are achieved by clustering the values of the Lagrangian, removing outliers and specifying smaller values of the Lagrangian multiplier in the rate-distortion optimization for encoding mode selection. Experimental results using high quality video sequences show that bit rate reduction is obtained using the method of the present invention, at the expense of a slight loss in peak signal-to-noise ratio (PSNR). By conducting two different experiments, it has been verified that no subjective visual loss is visible despite the peak signal-to-noise ratio change. In relationship to the existing rate-distortion optimization methods currently employed in the (non-normative) MPEG-4/Part 10 encoder, the method of the present invention represents a simple and useful add-on. More importantly, when other solutions such as further increasing the values of the quantization parameter are not applicable, as inadmissible artifacts would be introduced in the decoded pictures, the method of the present invention achieves bit rate reduction without introducing visible distortion in the decoded sequences. Even more, despite the fact that the present document makes use of the H.264 framework, the proposed method is applicable in any video encoding system that employs rate-distortion optimization for encoding mode selection. | 12-11-2014 |
| 20140362904 | METHOD AND DEVICE FOR ENTROPY CODING/DECODING - The present invention relates to an entropy decoding method which includes: generating context related to a bin that forms a codeword of a syntax element; and performing arithmetic decoding of the bin based on the context. | 12-11-2014 |
| 20140369401 | RE-SAMPLING FILTERS FOR SCALABLE VIDEO CODING - In one embodiment, a method receives a plurality of sample values. The method then determines a filter to determine an up-sampled value for a first layer for a video, wherein the filter has a set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] or [0, 1, −4, 13, 60, −8, 3, −1] assigned to the filter. The up-sampled value is determined by applying the set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] or [0, 1, −4, 13, 60, −8, 3, −1] to the plurality of sample values. The method then outputs the up-sampled value for use in coding a second layer of a higher resolution than the first layer. The up-sampled values may be for the 3/16 and −3/16 phase offsets. | 12-18-2014 |
| 20140369402 | RE-SAMPLING FILTERS FOR SCALABLE VIDEO CODING - In one embodiment, a method receives a plurality of sample values. The method then determines a filter to determine an up-sampled value for a first layer for a video, wherein the filter has a set of coefficient values of [−1, 3, −9, 47, 31, −10, 4, −1] or [−1, 4, −10, 31, 47, −9, 3, −1] assigned to the filter. The up-sampled value is determined by applying the set of coefficient values of [−1, 3, −9, 47, 31, −10, 4, −1] or [−1, 4, −10, 31, 47, −9, 3, −1] to the plurality of sample values. The method then outputs the up-sampled value for use in coding a second layer of a higher resolution than the first layer. The up-sampled values may be for the 6/16 and − 6/16 phase offsets. | 12-18-2014 |
| 20140369403 | VIDEO ENCODING SYSTEM, PROGRAM BANK DEVICE, AND VIDEO ENCODING METHOD - Encoders of a program bank device perform compression coding on video/voice data of a program from program VTRs, and extract an image feature value of video data of the program to be accumulated in a program database. When a time earlier by a predetermined time than a program delivery time indicated by program operation information from a program operation management server is reached, the program database notifies a statistical multiplexing controller of an image feature value and preliminarily calculates a video encoding bit rate by statistical multiplexing analysis processing. When the program delivery time is reached, the video/voice data of the program from the program database is decoded by decoders and output to delivery encoders at a timing when the data is output to the delivery encoders. | 12-18-2014 |
| 20140369404 | SIGNALING OF DEBLOCKING FILTER PARAMETERS IN VIDEO CODING - This disclosure describes techniques for signaling deblocking filter parameters for a current slice of video data with reduced bitstream overhead. Deblocking filter parameters may be coded in one or more of a picture layer parameter set and a slice header. The techniques reduce a number of bits used to signal the deblocking filter parameters by coding a first syntax element that indicates whether deblocking filter parameters are present in both the picture layer parameter set and the slice header, and only coding a second syntax element in the slice header when both sets of deblocking filter parameters are present. Coding the second syntax element is eliminated when deblocking filter parameters are present in only one of the picture layer parameter set or the slice header. The second syntax element indicates which set of deblocking filter parameters to use to define a deblocking filter applied to a current slice. | 12-18-2014 |
| 20140376606 | GRAPHICS SERVER AND METHOD FOR STREAMING RENDERED CONTENT VIA A REMOTE GRAPHICS PROCESSING SERVICE - A graphics server and method for streaming rendered content via a remote graphics rendering service. One embodiment of the graphics server includes: (1) a frame capturer configured to capture frames of rendered content at a frame rate, (2) an encoder configured to encode captured frames at the frame rate, and (3) a processor configured to cause encoded frames to be transmitted if the rendered content is at least partially changed, and cause a skip-frame message to be transmitted, the skip-frame message configured to cause the frame capturer to forgo capturing and the encoder to forgo encoding if the rendered content is unchanged. | 12-25-2014 |
| 20140376607 | PERCEPTUAL LOSSLESS COMPRESSION OF IMAGE DATA TO REDUCE MEMORY BANDWIDTH AND STORAGE - Methods and systems may include a compression module having logic to receive a pixel difference signal associated with an image, and conduct a compression of the pixel difference signal based on a value of the pixel difference signal. The logic can also generate a modified pixel difference signal based on the compression, wherein the compression may enable the image to be stored to dynamic random access memory (DRAM) in a compressed state. | 12-25-2014 |
| 20140376608 | SAMPLE ADAPTIVE OFFSET CONTROL - Offset values, such as Sample Adaptive Offset (SAO) values in video coding standards such as the High Efficiency Video Coding standard (HEVC), may be improved by performing calculations and operations that improve the preciseness of these values without materially affecting the signal overhead needed to transmit the more precise values. Such calculations and operations may include applying a quantization factor to a video sample and at least some of its neighbors, comparing the quantized values, and classifying the video sample as a minimum, maximum, or one of various types of edges based on the comparison. Other sample range, offset mode, and/or offset precision parameters may be calculated and transmitted with metadata to improve the precision of offset values. | 12-25-2014 |
| 20140376609 | TECHNIQUES FOR MANAGING VISUAL COMPOSITIONS FOR A MULTIMEDIA CONFERENCE CALL - Techniques for managing visual compositions for a multimedia conference call are described. An apparatus may comprise a processor to allocate a display object bit rate for multiple display objects where a total display object bit rate for all display objects is equal to or less than a total input bit rate, and decode video information from multiple video streams each having different video layers with different levels of spatial resolution, temporal resolution and quality for two or more display objects. Other embodiments are described and claimed. | 12-25-2014 |
| 20140376610 | DECODING METHOD AND DECODING APPARATUS FOR AVS SYSTEM - A decoding method for an audio video coding standard (AVS) system is provided. According to a stop-fetching criterion, a stop-fetching flag is set to an enabled status or a disabled status. In an offset fetching procedure, it is determined whether an offset value is smaller than a threshold and whether the stop-fetching is in the disabled status. When a determination result is affirmative, one subsequent bit is fetched for the offset value, an offset shift value is correspondingly increased, and the determination step is iterated. When the determination result is negative, the offset fetching procedure is terminated. Next, it is determined whether a decoding result is a least probable symbol (LPS) or a most probable symbol (MPS). | 12-25-2014 |
| 20140376611 | ADAPTIVE COLOR TRANSFORMS FOR VIDEO CODING - A device for coding video data includes a memory and at least one processor configured to determine a cost associated with a plurality of color transforms associated with a coding unit, determine a cost associated with a plurality of color transforms associated with a coding unit, select a color transform of the plurality of color transforms having a lowest associated cost, transform a first block of video data having a first, Red, Green, Blue (RGB) color space to produce a second block of video data having a second color space using the selected color transform of the plurality of color transforms, and encode the second video block having the second color space. | 12-25-2014 |
| 20140376612 | Dual-Layer Backwards-Compatible Progressive Video Delivery - Given an input progressive sequence, a video encoder creates a dual-layer stream that combines a backwards-compatible interlaced video stream layer with an enhancement layer to reconstruct full-resolution progressive video. Given two consecutive frames in the input progressive sequence, vertical processing generates a top field-bottom field (TFBF) frame in a base layer (BL) TFBF sequence, and horizontal processing generates a side-by-side (SBS) frame in an enhancement layer (EL) SBS video sequence. The BL TFBF and the EL SBS sequences are compressed together to create a coded, backwards compatible output stream. | 12-25-2014 |
| 20140376613 | IMAGE CODING DEVICE, IMAGE DECODING DEVICE, IMAGE CODING METHOD, AND IMAGE DECODING METHOD - An intra-scene and inter-scene adaptive coding unit | 12-25-2014 |
| 20140376614 | MOVING PICTURE CODING DEVICE, MOVING PICTURE CODING METHOD, AND MOVING PICTURE CODING PROGRAM, AND MOVING PICTURE DECODING DEVICE, MOVING PICTURE DECODING METHOD, AND MOVING PICTURE DECODING PROGRAM - In a moving picture coding device that codes a moving picture using motion compensation prediction in units of blocks acquired by dividing each picture of the moving picture, a prediction mode determiner derives motion information of a coding target block. A motion compensation predictor changes the derived motion information for the coding target block having a size smaller than or equal to a certain size when the coding target block has the size smaller than or equal to the certain size. The motion compensation predictor constructs a prediction signal of the coding target block through the motion compensation prediction using the derived motion information when the coding target block has a size larger than the certain size or using the changed motion information when the coding target block has the size smaller than or equal to the certain size. | 12-25-2014 |
| 20140376615 | MOBILE TELEPHONE SET HAVING VIDEO-PHONE FUNCTION LOW IN AMOUNT OF HEAT GENERATION - A temperature of a mobile telephone set is detected, and when the temperature exceeds a predetermined first threshold, a video signal encoding unit ( | 12-25-2014 |
| 20150010048 | CONTENT ADAPTIVE TRANSFORM CODING FOR NEXT GENERATION VIDEO - Techniques related to content adaptive transform coding are described. | 01-08-2015 |
| 20150010049 | METHOD OF DEPTH INTRA PREDICTION USING DEPTH MAP MODELLING - A method of depth map coding for a three-dimensional video coding system incorporating extended reconstructed neighboring depth samples is disclosed. The depth block is partitioned into one or more segments. A prediction value for each segment is derived based on reconstructed neighboring depth samples. The reconstructed neighboring depth samples for at least one segment comprise at least one reconstructed sample from an extended top neighboring row or an extended left neighboring column. The extended top neighboring row includes at least one extended top-row reconstructed depth sample located adjacent to top side of a second depth block adjacent to right side of the current depth block. The extended left neighboring column includes at least one extended left-column reconstructed depth sample located adjacent to left side of a third depth block adjacent to bottom side of the current depth block. | 01-08-2015 |
| 20150010050 | OPTIMIZATIONS ON INTER-LAYER PREDICTION SIGNALLING FOR MULTI-LAYER VIDEO CODING - A method of coding video data includes receiving one or more layers of video information. Each layer may include at least one picture. The method can include processing an indicator within at least one of a video parameter set (VPS), a sequence parameter set (SPS), or a picture parameter set (PPS) that indicates whether all direct reference layer pictures associated with the at least one of the video parameter set (VPS), the sequence parameter set (SPS), or the picture parameter set (PPS) are added to an inter-layer reference picture set. Based on the indicator, the method can further include refraining from further signaling inter-layer reference picture information in any video slice associated with the at least one of the video parameter set (VPS), the sequence parameter set (SPS), or the picture parameter set (PPS). Alternatively, based on the indicator, the method can further include adding to the inter-layer reference picture set all direct reference layer pictures for any video slice associated with the at least one of the video parameter set (VPS), the sequence parameter set (SPS), or the picture parameter set (PPS). | 01-08-2015 |
| 20150010051 | OPTIMIZATIONS ON INTER-LAYER PREDICTION SIGNALLING FOR MULTI-LAYER VIDEO CODING - A method of coding video data includes receiving one or more layers of video information. Each layer may include at least one picture. The method can include determining a number of active reference layer pictures associated with at least one picture of the one or more layers. The method can further include determining a number of direct reference layers associated with the at least one of the one or more layers. Based on the number of direct reference layers equaling the number of active reference layer pictures, the method can further include refraining from further signaling inter-layer reference picture information in any video slice associated with at least one of a video parameter set (VPS), a sequence parameter set (SPS), or a picture parameter set (PPS). Additionally or alternatively, based on the number of direct reference layers equaling the number of active reference layer pictures, the method can include adding to the inter-layer reference picture set all direct reference layer pictures for any video slice associated with at least one of a video parameter set (VPS), a sequence parameter set (SPS), or a picture parameter set (PPS). | 01-08-2015 |
| 20150010052 | High Throughput VLSI Architecture for HEVC SAO Encoding - An apparatus for sample adaptive offset (SAO) filtering in video encoding. A unified processing engine collects statistics on a block of pixels, determines a minimum RD cost (J) for each category of band offsets and edge offsets; determines a RD cost to find the optimal SAO type and determines a cost for each of the left SAO parameters and the up SAO parameters. The unified processing engine operates for three iterations: once for luminance once for each chrominance. A SAO merge decision unit determines an optimal mode and generates current LCU Parameters. The RD offset unit determination includes determining whether the sign of the minimum offset is proper for the category of edge offset. The RD offset is determined using a programmable look-up table indexed by the offset to estimate a rate. The unified processing engine operates on a three stage pipeline: loading blocks; processing; and updating blocks. | 01-08-2015 |
| 20150010053 | PALETTE CODING MODE - Enhanced signaling is provided for video coding using a palette coding mode. In one aspect, the sending of a copy from above flag is skipped for the first row of a coding unit (CU), towards eliminating flag redundancy and to address a CU boundary issue. In a second aspect, an address line repeating pattern issue is overcome by signaling a single copy from above flag, except the first row, despite the fact that multiple runs exist in the row. | 01-08-2015 |
| 20150010054 | DERIVING REFERENCE MODE VALUES AND ENCODING AND DECODING INFORMATION REPRESENTING PREDICTION MODES - Reference prediction mode values, also referred to as most probable modes, usable for encoding or decoding of a prediction mode related to a current coding unit, are derived. First and second reference prediction mode values are derived (S | 01-08-2015 |
| 20150010055 | METHOD AND APPARATUS FOR UNIFICATION OF SIGNIFICANCE MAP CONTEXT SELECTION - A method and apparatus for significance map coding for 4×4 TUs (transform units) and 8×8 TUs of video data are disclosed. The method comprises receiving at least one context selection table for a first TU associated with a first color component and generating a derived context selection table for a second TU associated with a second color component from said at least one context selection table. The first TU has a first size comprising of 4×4 and 8×8. The second TU has a second size comprising of 4×4 and 8×8. The second size is different from the first size, the second color component is different from the first color component, or both the second size is different from the first size and the second color component is different from the first color component. The derived context selection table is then used for significance map processing of the second TU. | 01-08-2015 |
| 20150010056 | METHOD AND APPARATUS FOR VIDEO ENCODING CAPABLE OF PARALLEL ENTROPY ENCODING OF SUBREGIONS, METHOD AND APPARATUS FOR VIDEO DECODING CAPABLE OF PARALLEL ENTROPY DECODING OF SUBREGIONS - A video encoding method includes: generating encoding symbols by performing source coding on subregions formed by splitting a picture in a vertical direction, based on blocks having a predetermined size; determining a reference block to be referred to for determining code probability information of a start block in a current subregion, the reference block being determined from among boundary blocks of a neighboring subregion which are encoded before the start block and adjacent to a boundary between the current subregion and the neighboring subregion; performing entropy encoding on blocks of the current subregion, starting from the start block, by using the encoding symbols of the blocks of the current subregion based on the code probability information of the start block determined by using code probability information of the determined reference block; and performing entropy encoding on another subregion in parallel with performing entropy encoding on the current subregion. | 01-08-2015 |
| 20150010057 | IMAGE DECODING DEVICE AND IMAGE DECODING METHOD - An image decoding device which decodes an encoded stream of images each divided into plural units. The image decoding device including: a parameter candidate generating unit configured to generate a parameter candidate list including one or more parameter candidates each of which is available to decode a decoding target unit, using one or more parameters used in decoding of one or more decoded units; a parameter information decoder which decodes parameter information included in the encoded stream and related to the one or more parameter candidates; and an error detecting unit configured to detect, as an error, a state in which the parameter information decoded by the parameter information decoder does not have a match in the parameter candidate list generated by the parameter candidate generating unit. | 01-08-2015 |
| 20150010058 | DECODING A PICTURE BASED ON A REFERENCE PICTURE SET ON AN ELECTRONIC DEVICE - A method for decoding a picture on an electronic device is described. The method includes obtaining a bitstream. The method also includes obtaining a current picture. The method further includes obtaining a relative reference picture set (RPS) parameter. The method additionally includes initializing an index value. Furthermore, the method includes processing another RPS parameter based on the index value. The method also includes decoding the current picture. | 01-08-2015 |
| 20150010059 | IMAGE PROCESSING DEVICE AND METHOD - The present disclosure relates to an image processing device and method which can accurately reproduce a dynamic range of an image. | 01-08-2015 |
| 20150016500 | DEVICE AND METHOD FOR SCALABLE CODING OF VIDEO INFORMATION - An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a first layer and a second layer. The processor is configured to decode first layer pictures of the first layer, store the decoded first layer pictures in a decoded picture buffer, determine whether second layer pictures having no corresponding first layer pictures are to be coded, and in response to determining that second layer pictures having no corresponding first layer pictures are to be coded, process an indication that one or more decoded first layer pictures stored in the decoded picture buffer are to be removed. The processor may encode or decode the video information. | 01-15-2015 |
| 20150016501 | PALETTE PREDICTION IN PALETTE-BASED VIDEO CODING - In palette-based coding, a video coder may form a so-called “palette” as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. According to the techniques, a video coder determines one or more palette entries in a predictive palette that are copied to the current palette, and a number of new palette entries not in the predictive palette that are included in the current palette. The video coder calculates a size of the current palette equal to the sum of the number of the copied palette entries and the number of the new palette entries, and generates the current palette including the copied palette entries and the new palette entries. | 01-15-2015 |
| 20150016502 | DEVICE AND METHOD FOR SCALABLE CODING OF VIDEO INFORMATION - An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a current layer and an enhancement layer, the current layer having a current picture. The processor is configured to determine whether the current layer may be coded using information from the enhancement layer, determine whether the enhancement layer has an enhancement layer picture corresponding to the current picture, and in response to determining that the current layer may be coded using information from the enhancement layer and that the enhancement layer has an enhancement layer picture corresponding to the current picture, code the current picture based on the enhancement layer picture. The processor may encode or decode the video information. | 01-15-2015 |
| 20150016503 | TILES AND WAVEFRONT PROCESSING IN MULTI-LAYER CONTEXT - A video encoder may generate a bitstream that includes a syntax element that indicates whether inter-layer prediction is enabled for decoding a tile of a picture of the video data. Similarly, a video decoder may obtain, from a bitstream, a syntax element that indicates whether inter-layer prediction is enabled. The video decoder may determine, based on the syntax element, whether inter-layer prediction is enabled for decoding a tile of a picture of the video data, and decode the tile based on the determination. | 01-15-2015 |
| 20150016504 | EXTENSIONS OF MOTION-CONSTRAINED TILE SETS SEI MESSAGE FOR INTERACTIVITY - An extension to the motion-constrained tile sets SEI message provides functionality to signal all tiles are independently decodable and to signal the ROIs that may have more than one tile per ROI. With this extension, the functionality to redefine any independently decodable region-of-interest in a CVS at a coding tree unit level based on user interactivity is enabled. The extension supports the interactivity utilized in various applications such as interactive Ultra High Definition Television (UHDTV), dynamic high-quality zoom-in application, interactive on-demand, e-learning, smart surveillance and many other applications. Additionally, the temporal MCTS SEI message is able to be used by an encoder for tiled streaming to signal explicitly to the decoder that the decoder need only to display the ROI. | 01-15-2015 |
| 20150016505 | Reference Picture List Handling - At least one mode signaling syntax element is provided based on an encoded representation of a picture in a video sequence. The at least one mode signaling syntax element is employed to determine whether at least one final reference picture list is the same for all slices of a same slice type in the picture. The at least one mode signaling syntax element thereby signals to a decoder that it does not necessarily have to repeat computationally complex reference picture list construction functions for each slice in the picture. | 01-15-2015 |
| 20150016506 | METHOD AND APPARATUS FOR LOOP FILTERING ACROSS SLICE OR TILE BOUNDARIES - A method and apparatus for loop filter processing of video data in a video encoder or decoder are disclosed. Embodiments according to the present invention conditionally allow sharing of loop filter parameters. In one embodiment, sharing of loop filter information between the current block and a neighboring block is determined according to a condition. If the condition indicates that sharing of loop filter information is allowed, a merge flag is coded and incorporated in the video bitstream in an encoder, and a merge flag is parsed from the video bitstream and decoded in a decoder. In one embodiment, the condition depends on region partitioning of the picture, where region partitioning partitions the picture into regions and the region may correspond to a slice or a tile. The condition is set to indicate that sharing of loop filter information is allowed if the block and the neighboring block are in a same slice/tile. | 01-15-2015 |
| 20150016507 | IMAGE DECODING APPARATUS FOR DECODING A TARGET BLOCK BY REFERENCING INFORMATION OF AN ALREADY DECODED BLOCK IN A NEIGHBORHOOD OF THE TARGET BLOCK - To provide an image decoding apparatus that suppresses overhead of parallel processing to improve parallelization efficiency and reduce circuit costs, while solving neighboring macroblock dependencies. The image decoding apparatus ( | 01-15-2015 |
| 20150016508 | METHOD AND APPARATUS FOR ENCODING IMAGES AND METHOD AND APPARATUS FOR DECODING IMAGES - An apparatus for decoding an image includes an encoding information extractor which extracts split information indicating whether to split a coding unit of an upper depth into coding units of deeper depths and skip information indicating whether a prediction mode of a current coding unit is a skip mode, from image data and a decoding unit which determines a split structure of a maximum coding unit, according to the split information so that the maximum coding unit is hierarchically split as a depth increases and determines whether the prediction mode of the current coding unit is the skip mode according to the skip information. | 01-15-2015 |
| 20150023404 | Quality Optimization with Buffer and Horizon Constraints in Adaptive Streaming - Techniques are provided for optimizing quality in adaptive streaming, where information is obtained relating to encoding bitrates and content quality scores for content segments of a content stream. The content segments of the content stream are provided by a content server and downloaded by a computing device. For each content segment, an encoding bitrate is determined for downloading the content segment from the content server, where determining the encoding bitrate for a current content segment is based upon an estimated current network bandwidth, constraints of a buffer into which downloaded content segments are stored, and also upon quality scores associated with content segments within a selected horizon extending from the current content segment to a future content segment in the content stream at an endpoint of the horizon. Each content segment with the determined bitrate for the content segment is downloaded from the content server. | 01-22-2015 |
| 20150023405 | DISABLING INTRA PREDICTION FILTERING - A video decoder may adaptively disable, based on a syntax element, one or more filters used for intra-prediction. In addition, the video decoder may perform intra-prediction to generate prediction data for a current block of a current video slice. Furthermore, a video encoder may adaptively disable one or more filters used for intra-prediction. Furthermore, the video encoder may signal a syntax element that controls the one or more filters. In addition, the video encoder may perform intra prediction to generate prediction data for a current video block the video data. | 01-22-2015 |
| 20150023406 | METHOD AND APPARATUS FOR VIDEO ENCODING FOR EACH SPATIAL SUB-AREA, AND METHOD AND APPARATUS FOR VIDEO DECODING FOR EACH SPATIAL SUB-AREA - Provided are a video encoding method and a video decoding method according to spatial subdivisions based on splitting a picture into a first tile and a second tile, and splitting a current tile among the first tile and the second tile into at least one slice segment, encoding the first tile and the second tile, independently from each other, and encoding maximum coding units of a current slice segment among the at least one slice segment included in the current tile, with respect to the at least one slice segment included in the current tile. | 01-22-2015 |
| 20150023407 | IMAGE DECODING DEVICE, IMAGE DECODING METHOD, IMAGE ENCODING DEVICE, AND IMAGE ENCODING METHOD - Provided is an image decoding device including an acquisition section configured to acquire a first parameter indicating which tile is a region-of-interest tile from an encoded stream encoded by partitioning an image into a plurality of tiles, and a decoding section configured to decode at least one of the region-of-interest tile and a non-region-of-interest tile of the image based on the first parameter acquired by the acquisition section. | 01-22-2015 |
| 20150023408 | IMAGE PROCESSING APPARATUS AND METHOD - Disclosed herein is an image processing apparatus, including, a header information production section configured to produce, regarding each of divisional code streams obtained by dividing a code stream having a structure of a progression order produced by coding image data, header information at a start and an end of the divisional code stream, the header information including a characteristic amount of an image of the image data, and a packet production section configured to convert each of the divisional code streams into a packet using the header information produced by the header information production section. | 01-22-2015 |
| 20150023409 | LOW DELAY PICTURE CODING - Parallel processing concepts such as wavefront parallel processing, are realized with a reduced end-to-end delay by giving up the usual slice concept according to which slices are either coded/decoded completely independent from areas of the picture outside of the respective slice, or at least independent from areas outside the respective slice as far as the entropy coding is concerned, namely in favor of slices of different modes, namely ones called dependent slices which allow for interdependencies across slice boundaries, and others which do not, called normal slices, for example. Combined with the aspect or not, WPP processing concept is made more efficiently by using the slices' start syntax portions to locate WPP entry points. | 01-22-2015 |
| 20150030066 | SCREEN CONTENT CODING SYSTEMS AND METHODS - Presented systems and methods facilitate screen content coding. A system can comprises: a processing component configured to execute coding operations and a storage component configured to store information for the processing component, including the color table and color index map. The coding operations can include: receiving information associated with a plurality of pixels; creating a color table, the color table includes color values (e.g., of the pixels) and corresponding indices; creating a color index map wherein each index of the color map maps a pixel to an index value of the color table; and performing coding operations corresponding to the color table and color index map. In one exemplary implementation, index values of the color table are encoded/decoded during color table and index map coding rather than the actual raw color values for each pixel. Various types of compression and coding can be implemented (e.g., lossless, lossy, intra-prediction, inter-prediction, etc.). | 01-29-2015 |
| 20150030067 | METHOD AND APPARATUS FOR CODED BLOCK FLAG CODING IN HIGH EFFICIENCY VIDEO CODING - A method and an apparatus for decoding of a video bitstream are disclosed. In one embodiment, the method comprises: decoding a first coded block flag (cbf) of the color component indicating whether a current coding unit (CU) of the color component has at least one non-zero transform coefficient ( | 01-29-2015 |
| 20150036734 | VIDEO PROCESSING MODE SWITCHING - Methods and apparatus for switching between different video processing modes in an apparatus. In a first mode, minimal processing of the video frames may be performed by the apparatus prior to feeding the frames to a display controller. In a second mode, the apparatus may perform additional rendering of the video frames including compositing of other graphical input with the rendered video frames to generate display frames that may be fed to the display controller. To conserve power, the apparatus may operate in or switch to the first mode when the additional rendering and compositing is not required or when the device is in a low power mode, and operate in or switch to the second mode when the additional rendering and compositing is required to render desired graphical effects. | 02-05-2015 |
| 20150036735 | WIRELESS TRANSMISSION OF REAL-TIME MEDIA - A method, wireless communication device, and computer readable medium, are disclosed, for encoding real-time media for wireless transmission from a source to a sink over a wireless transmission channel. The wireless device initiates a peer-to-peer communication session between the sink and the source, then determines based on a time-allocation for the wireless transmission, an available bandwidth for the wireless transmission. The wireless device then encodes the real-time media for the wireless transmission based on the available bandwidth or a throughput constraint. | 02-05-2015 |
| 20150036736 | METHOD, DEVICE AND SYSTEM FOR PRODUCING A MERGED DIGITAL VIDEO SEQUENCE - A video processing device for producing a frame of a merged digital video sequence. A memory storing a first and a second digital video sequence depicting the same scene. The first digital video sequence has a higher pixel density than the second digital video sequence. A scaler generating an up-scaled version having the same pixel density as the first video sequence. A decoder decoding a frame of the first digital video sequence and a skip block identifying a position for a skip block and a non-skip block in the frame of the first digital video sequence. A block extractor extracting a block of pixels from the frame of the second digital video sequence based on the skip block and a block of pixels from the frame of the first digital video sequence based on the non-skip block. A merging unit merging both extracted blocks to produce the merged video sequence. | 02-05-2015 |
| 20150036737 | CONTENT ADAPTIVE PREDICTIVE AND FUNCTIONALLY PREDICTIVE PICTURES WITH MODIFIED REFERENCES FOR NEXT GENERATION VIDEO CODING - Techniques related to content adaptive predictive and functionally predictive pictures with modified references for next generation video coding are described. | 02-05-2015 |
| 20150036738 | METHOD AND APPARATUS FOR REAL-TIME SAO PARAMETER ESTIMATION - The disclosure provides a sample adaptive offset (SAO) encoder. The SAO encoder includes a statistics collection (SC) block and a rate distortion optimization (RDO) block coupled to the SC block. The SC block receives a set of deblocked pixels and a set of original pixels. The SC block categorizes each deblocked pixel of the set of deblocked pixels in at least one of a plurality of band and edge categories. The SC block estimates an error in each category as difference between a deblocked pixel of the set of deblocked pixels and corresponding original pixel of the set of original pixels. The RDO block determines a set of candidate offsets associated with each category and selects a candidate offset with a minimum RD cost. The minimum RD cost is used by a SAO type block and a decision block to generate final offsets for the SAO encoder. | 02-05-2015 |
| 20150036739 | METHOD AND APPARATUS FOR GENERATING ENCODED CONTENT USING DYNAMICALLY OPTIMIZED CONVERSION - An initial content is encoded a first time to obtain a first encoded content. One or more parameters obtained from the first encoding are used to generate an encoding coefficient. The initial content is encoded a second time to obtain a second encoded content. The second encoding is performed using encoding coefficients, at least one of which is derived from the parameter associated with the first encoding. The two encodings can be implemented using a single encoder or two separate encoders. | 02-05-2015 |
| 20150036740 | RATE-DISTORTION-COMPLEXITY OPTIMIZATION OF VIDEO ENCODING GUIDED BY VIDEO DESCRIPTION LENGTH - A system and method provide a video description length (VDL) guided constant quality video encoding strategy with bitrate constraint and a video coding system for optimizing encoding bitrate, distortion and complexity of an input video. The method obtains an overall VDL, temporal VDL and spatial VDL of the input video and compares the overall VDL, temporal VDL and spatial VDL of the input video with a reference VDL, temporal VDL and spatial VDL. Based on the comparison, the method adjusts the encoding bitrate, the overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video and encodes the input video with the adjusted encoding bitrate, overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video. | 02-05-2015 |
| 20150036741 | METHOD FOR STORING MOVEMENT PREDICTION-RELATED INFORMATION IN AN INTERSCREEN PREDICTION METHOD, AND METHOD FOR CALCULATING THE MOVEMENT PREDICTION-RELATED INFORMATION IN THE INTER-SCREEN PREDICTION METHOD - Provided are methods for storing and obtaining motion prediction-related information in inter motion prediction method. The method for storing the motion prediction-related information may include obtaining size information of prediction unit of a picture, and adaptively storing motion prediction-related information of the picture on the basis of the obtained size information of prediction unit of the picture. The method for obtaining the motion prediction-related information may include searching a first temporal motion prediction candidate block to obtain first temporal motion prediction-related information in the first temporal motion prediction candidate block, and searching a second temporal motion prediction candidate block to obtain second temporal motion prediction-related information in the second temporal motion prediction candidate block. Thus, a memory space for storing the motion prediction-related information may be efficiently utilized. Also, an error between the prediction block and an original block may be reduced to improve coding efficiency. | 02-05-2015 |
| 20150043630 | IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD - An image decoding device and an image decoding method are disclosed. The decoding device includes: a variable length decoder to variable-length-decode an inputted encoded bit stream to obtain a parameter for prediction signal generation, a compressed difference image, and filters; and a filtering processor to carry out a filtering process on a decoded image acquired by adding a prediction image and a difference image, wherein the prediction image is generated by using the parameter for prediction signal generation, and the difference image is acquired by decoding the compressed difference image, wherein the variable length decoder variable-length-decodes class identification information for a block in the decoded image, and wherein the filtering processor refers to the class identification information for the block to determine a class for the block, and carries out a filtering process on the block based on the determined class and the filters. | 02-12-2015 |
| 20150049800 | ESTIMATION OF ENTROPY ENCODING BITS IN VIDEO COMPRESSION - A technique for encoding digital video data comprises determining an estimated number of real bits associated with performing one or more entropy encoding operations on a coding unit of digital video data. Based on the estimated number of real bits, an estimated cost of compressing the coding unit using a compression technique is determined, and the compression technique is selected to compress the coding unit based at least in part on the estimated cost. | 02-19-2015 |
| 20150049801 | INTRA REFRESH METHOD FOR VIDEO ENCODING AND A VIDEO ENCODER FOR PERFORMING THE SAME - An intra refresh method is provided. The intra refresh method includes dividing a first frame into regions, counting a number of intra macroblocks included in each of the regions, calculating weight values of the regions, configuring a macroblock included in a second region of a second frame as an intra macroblock, based on the number of the first region. The second region corresponds to the first region. | 02-19-2015 |
| 20150049802 | METHOD AND DEVICE FOR CODING AN IMAGE BLOCK, CORRESPONDING DECODING METHOD AND DECODING DEVICE - A method is described for reconstructing a current block of a current image from at least one block of a reconstructed reference image at a different size from the size of the current image. The method comprises the steps:
| 02-19-2015 |
| 20150049803 | MULTIVIEW VIDEO ENCODING METHOD AND DEVICE, AND MULTIVIEW VIDEO DECODING METHOD AND DEVICE - A multi-view video encoding method multiplexes an encoded multi-view image by a predetermined data unit and adds a scalable extension type (SET) indicating which view of image among a basic view image and an additional view image is related to data included in the predetermined data unit, a depth flag indicating which image is related to the data among a texture image and a depth map image, and a view ID of the data to a header of the predetermined data unit. | 02-19-2015 |
| 20150055697 | Method and Apparatus of Transform Process for Video Coding - A method for transform processing in video coding is disclosed. Embodiments according to the present invention reduce the computational complexity of determining transform size for a processing block corresponding to a prediction block or a coding block. The transform size determination is based on encoder information or external information without comparing costs associated with different transform sizes. The encoder information can be the size of the processing block or the prediction information. The external information may correspond to the system bandwidth, the network bandwidth, the system power, the remaining energy of the battery in a mobile device, the timing budget related to performing transform for a given transform size. In another embodiment, the transform for each prediction block is performed only during cost evaluation or only during video data reconstruction. | 02-26-2015 |
| 20150055698 | METHOD AND APPARATUS FOR DETERMINING INTRA PREDICTION MODE - Provided are a method and an apparatus for determining an intra prediction mode. The method includes: splitting a maximum coding unit into coding units of a first size; acquiring an edge direction of each of the coding units of the first size; grouping adjacent coding units of the first size based on uniformity of edge directions of the adjacent coding units of the first size; determining a size range of coding units to be applied to intra prediction on the intra prediction coding unit group; performing the intra prediction on the intra prediction coding unit group by using coding units having sizes included in the determined size range; and determining a coding unit for the intra prediction and an intra prediction mode of the coding unit by comparing costs according to the performed intra prediction on the coding units having the sizes included in the size range. | 02-26-2015 |
| 20150055699 | METHOD AND APPARATUS FOR ENCODING VIDEO, AND METHOD AND APPARATUS FOR DECODING VIDEO - A method of decoding an image including extracting information that indicates an intra prediction mode applied to a current block to be decoded, from a bitstream; determining one of neighboring pixels adjacent to the current block and filtered neighboring pixels filtered from the neighboring pixels as reference pixels, based on at least one of a size of the current block and an intra prediction mode of the current block; performing intra prediction on the current block using the extracted information and the determined reference pixels, wherein, when the current block has a size of N×N, where N is integer, the neighboring pixels include 2N neighboring pixels adjacent to an upper side and an upper right side of the current block and 2N neighboring pixels adjacent to a left side and a below left side of the current block. | 02-26-2015 |
| 20150063437 | IMAGE DECODING METHOD AND IMAGE DECODING APPARATUS - To provide a video coding technique to reduce the amount of code, a coding apparatus configured to code layers at a plurality of resolutions as a stream determines the coding unit, prediction unit, and frequency transform unit for each layer in compliance with given rules with reference to the coding unit, prediction unit, and frequency transform unit of the lower layer, respectively, and switches the given rules with a flag. This adaptively and efficiently compresses a video. | 03-05-2015 |
| 20150063438 | ENCODING METHOD AND DECODING METHOD, AND DEVICE USING SAME - The present invention relates to an encoding method and decoding method, and a device using the same. The encoding method according to the present invention comprises the steps of: specifying an intra prediction mode for a current block; and scanning a residual signal by intra prediction of the current block, wherein the step of scanning the residual signal can determine a scanning type for a luminance signal and a chroma signal of the current block according to an intra prediction mode for a luminance sample of the current block. | 03-05-2015 |
| 20150063439 | ENCODING APPARATUS AND METHOD - An encoding apparatus includes an encoder configured to classify an image into a regions corresponding to display screen sizes, and encode the image. The encoder classifies the regions into tile region. The encoder adds, to encoded data, information for associating information of a tile region to be decoded when decoding an image corresponding to one of display screen sizes. | 03-05-2015 |
| 20150063440 | CONSTRAINED INTRA PREDICTION IN VIDEO CODING - A method of encoding video data includes determining that a current block of video data is to be encoded using an intra block copy (BC) mode and constrained intra prediction, determining one or more reference blocks that may be used for encoding the current block using the intra BC mode, wherein each of the one or more reference blocks is encoded with an intra prediction mode, and encoding the current block of video data using the intra BC mode and at least one of the determined one or more reference blocks. | 03-05-2015 |
| 20150063441 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 03-05-2015 |
| 20150063442 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 03-05-2015 |
| 20150071339 | PERFORMING VIDEO ENCODING MODE DECISION BASED ON MOTION ACTIVITY - A method and apparatus are described for performing video encoding mode decisions. A down-scaled frame is received that includes a macroblock corresponding to a first subset of macroblocks of a first area in a full-scale frame. A first average motion vector is calculated for the first subset of macroblocks, and a second average motion vector is calculated for a second subset of macroblocks of a second area surrounding the first subset of macroblocks. A comparison of a threshold to a distance measure between absolute values of the first and second average motion vectors is performed. A prediction mode for the macroblock in the down-scaled frame is determined based on the comparison to generate predicted blocks. | 03-12-2015 |
| 20150071340 | SAMPLE ADAPTIVE FILTERING WITH OFFSETS - A method, a filtering control device, a computer program and a computer program product for processing a first picture in a sample adaptive filtering procedure are disclosed. The first picture is reconstructed from video data. The filtering control device obtains an offset magnitude from the video data. The offset magnitude indicates a magnitude of a sample adaptive offset to be applied in the sample adaptive filtering procedure. The filtering control device obtains an offset sign from the video data. The offset sign indicates a sign of the sample adaptive offset. The filtering control device determines the sample adaptive offset based on the offset magnitude and the offset sign. Moreover, the filtering control device processes, in the sample adaptive filtering procedure, at least a portion of the first picture while applying the sample adaptive offset. | 03-12-2015 |
| 20150071341 | ARRANGEMENTS AND METHODS THEREOF FOR PROCESSING VIDEO - A method performed by a video encoder for encoding a current picture belonging to a temporal level identified by a temporal_id. The method includes determining a Reference Picture Set (RPS) for the current picture indicating reference pictures that are kept in a decoded picture buffer (DPB) when decoding the current picture, and when the current picture is a temporal switching point. The method further comprises operating to ensure that the RPS of the current picture includes no picture having a temporal_id greater than or equal to the temporal_id of the current picture. | 03-12-2015 |
| 20150071342 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - An image decoding method includes: restoring a selected prediction mode used in prediction at a time of coding; and decoding a current block included in coded image data to generate a decoded block, according to the prediction based on the selected prediction mode. The restoring includes: determining a first estimated prediction mode; determining a second estimated prediction mode different from the first estimated prediction mode; and restoring the selected prediction mode based on the mode information, the first estimated prediction mode, and the second estimated prediction mode. | 03-12-2015 |
| 20150078431 | Method and apparatus of temporary image frame compression - An image compression method and fast storage device accessing and pixel decompression is achieved by applying variable bit rate to reduce the data amount of each image frame. Several thresholds are predetermined depending on the availability of the bandwidth of the storage device and the image resolution to decide the compression ratio of each image frame. Starting address of each compressed image frame is saved in predetermined location of the storage device for quick random accessing any compressed frame of image. | 03-19-2015 |
| 20150078432 | CODING POSITION DATA FOR THE LAST NON-ZERO TRANSFORM COEFFICIENT IN A COEFFICIENT GROUP - Methods and devices for video coding are described. When encoding a non-zero coefficient group (CG) prior to the last such group in a group scan ordering within a transform block, data representative of the true (x,y)-position of the last non-zero transform coefficient in a scan ordering within that CG is modified, to improve coding efficiency, based upon at least one of (a) an intra-prediction mode used to encode the block and (b) at least one coefficient group neighbouring that CG. Upon decoding a CG thus encoded, the modification is un-done to retrieve the true (x,y)-position. | 03-19-2015 |
| 20150078433 | REDUCING BANDWIDTH AND/OR STORAGE OF VIDEO BITSTREAMS - Bandwidth, power and/or storage may be saved when certain pictures of a video bitstream are selectively reduced in size prior to transmission and/or storage in a video decoding process. Any number of criteria may be used in determining which pictures are to be selected for reduction. For example, pictures that are to be used for display only and not to be used for future picture predictions or may be used only in a small number future picture predictions may be reduced. | 03-19-2015 |
| 20150078434 | MULTI-DESCRIPTION-BASED VIDEO ENCODING AND DECODING METHOD, DEVICE AND SYSTEM - A multi-description-based video encoding and decoding method, device and system, comprising the following steps: separating odd frames from even frames to generate and encode an initial description; utilizing the correlation of macro-block levels between different descriptions to generate and encode the side information of different modes; and transmitting via a channel. The present invention may be used in a real-time video transmission scenario. | 03-19-2015 |
| 20150078435 | METHOD AND APPARATUS FOR CODING OF SPATIAL DATA - The invention describes a method for representing geometry information to utilise for scalable coding of piecewise smooth spatial data sets. The method may also be applicable to vector data such as motion, where this data tends to exhibit piecewise smooth characteristics. The hierarchical geometry representation detailed in this invention is spatially scalable and amenable to embedded quantization and coding techniques. These features enable the geometry representation to be incorporated into highly scalable image coding schemes to attain efficient compression and output bit-streams with embedded resolution and quality scalability. Central elements of the invention are: the hierarchical representation of geometry information which describe points of discontinuity in the input data set; a rate-distortion driven estimation process to construct the geometry representation; a process to prioritize the geometry information in accordance to its influence on compression performance; and methods for efficient coding of the geometry information that facilitates resolution and quality scalability. | 03-19-2015 |
| 20150078436 | IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS AND IMAGE TRANSMISSION SYSTEM - According to an embodiment, an image encoding apparatus includes a key information generator, a key image generator and an image encoder. The key information generator generates key information. The key image generator generates a key image based on a base image and the key information. The base image includes one or more images. The image encoder generates encoded data by encoding an input image using the key image. | 03-19-2015 |
| 20150078437 | IMAGE ENCODING/DECODING METHOD AND DEVICE USING COEFFICIENTS OF ADAPTIVE INTERPOLATION FILTER - An image encoding and decoding method comprising: a coefficient calculator for calculating adaptive interpolation filter coefficient of a current frame; an image encoder for interpolating reference frames using the adaptive interpolation filter coefficient of the current frame and encoding the current frame using the interpolated reference frames; a filter flag encoder for generating and encoding a coefficient-inserted flag or coefficient non-inserted flag as a filter flag according to the adaptive interpolation filter coefficient of the current frame; a coefficient encoder for encoding the adaptive interpolation filter coefficient of the current frame when the filter flag is a coefficient-inserted flag; and a bit stream generator for generating and outputting a bit stream, which includes the encoded current frame and encoded filter flag, and further includes encoded adaptive interpolation filter coefficient of the current frame when the filter flag is the coefficient-inserted flag. | 03-19-2015 |
| 20150078438 | ENHANCED INTRA PREDICTION MODE SIGNALING - A method and apparatus for signaling and receiving a video signal for processing is disclosed. Methods for determining a most probable mode for predicting a current prediction block are provided as well as new methods for grouping intra prediction modes into prediction groups. Methods for predicting a prediction block of video data as well as signaling intra prediction modes are also provided. | 03-19-2015 |
| 20150078439 | IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD AND PROGRAM - There is provided an image processing system and an image processing method able to suppress block distortion in the case of decoding image data encoded in unit of blocks. A controlling unit selects a filtering content to be applied to the block image data based on the encoding types of the block image data to be filtered, and a filtering unit applies filtering to the block image data to be processed according to the filtering content selected by the controlling unit. | 03-19-2015 |
| 20150085915 | Method and system for automatically encoding video with uniform throughput - A video compression method and system is specialized for uniform throughput video compression. The method/system encodes video sequences with uniform throughput, while reducing computational complexity as much as possible. By this means, it can efficiently decrease the latency incurred in video compression process and is suitable for real time video streaming and cloud gaming applications. The method is composed of two main modules: development of Basic Coding Unit (BCU) with the Intra Macroblock Allocation (IMA) map and reduction of computational complexity | 03-26-2015 |
| 20150085916 | FILTERING VIDEO DATA IN VIDEO CODING - In an example, a method for filtering pixel data in video coding comprises determining a pixel filtering task from a plurality of pixel filtering tasks for filtering the pixel data, wherein each filtering task of the plurality of pixel filtering tasks is based on an instruction set for a programmable instruction set based controller, and executing the determined filtering task on the pixel data. | 03-26-2015 |
| 20150085917 | METHOD FOR STORING IMAGE DATA, METHOD FOR PARSING IMAGE DATA, AND AN APPARATUS FOR USING THE SAME - The present invention relates to a method for storing image data, and a method for parsing image data, and an apparatus for using the same, which method includes the steps of encoding the image data, and storing an NAL (Network Abstraction Layer) unit containing the encoded image data in the decoder set register in which NAL units may be stored according to the type of NAL unit. | 03-26-2015 |
| 20150085918 | IMAGE CODING DEVICE, IMAGE CODING METHOD, AND IMAGE CODING INTEGRATED CIRCUIT - When compression encoding processing of an image is performed in units of macroblocks using a pipeline structure, an application of a skip mode or the like according to MPEG4AVC to compression encode an encoding target block requires motion vectors and the like of adjacent blocks of the encoding target block. However, depending on a structure of the pipeline stages, the motion vectors may not be determined. In such cases, the skip mode cannot be applied to compression encode the encoding target block. This problem can be solved by (i) calculating all motion information candidates, of the encoding target block, corresponding to all motion information selectable by a previous block of the encoding target block, and (ii) selecting, as the motion information of the encoding target block in the skip mode, the motion information corresponding to the motion information determined for the previous block. | 03-26-2015 |
| 20150085919 | METHOD AND APPARATUS FOR ENCODING IMAGE INFORMATION, AND METHOD AND APPARATUS FOR DECODING IMAGE INFORMATION - In an image information encoder ( | 03-26-2015 |
| 20150092832 | Delay Tolerant Decoder - In one implementation, a network device receives a series of video frames spanning a series time period from a network. The time period may be static of a specific duration or identified dynamically based on the timing of the video frames. The network device decodes the series of video frames and stores the decoded series of data frames in memory along with associated timestamps. A pause phenomenon in excess of expected delay is identified between two of the decoded video frames. The network device forwards or displays the series of decoded frames such that each successive pair of frames in the series of decoded frames are spaced by a resultant delay period that is less than a duration of the pause phenomenon. | 04-02-2015 |
| 20150092833 | PARALLEL ENCODING OF BYPASS BINARY SYMBOLS IN CABAC ENCODER - A video encoder may include a context-adaptive binary arithmetic coding (CABAC) encode component that converts each syntax element of a representation of a block of pixels to binary code, serializes it, and codes it mathematically with its probability model, after which the resulting bit stream is output. When the probability of a bin being coded with one of two possible symbols is one-half, the bin may be coded using bypass bin coding mode rather than a more compute-intensive regular bin coding mode. The CABAC encoder may code multiple consecutive bypass bins in a series of cascaded processing units during a single processing cycle (e.g., a regular bin coding cycle). Intermediate outputs of each processing unit may be coupled to inputs of the next processing unit. A resolver unit may accept intermediate outputs of the processing units and generate final output bits for the bypass bins. | 04-02-2015 |
| 20150092834 | CONTEXT RE-MAPPING IN CABAC ENCODER - A video encoder may include a context-adaptive binary arithmetic coding (CABAC) encode component that converts each syntax element of a representation of a block of pixels to binary code, serializes it, and codes it mathematically, after which the resulting bit stream is output. A lookup table in memory and a context cache may store probability values for supported contexts, which may be retrieved from the table or cache for use in coding syntax elements. Depending on the results of a syntax element coding, the probability value for its context may be modified (e.g., increased or decreased) in the cache and, subsequently, in the table. After coding multiple syntax elements, and based on observed access patterns for probability values, a mapping or indexing for the cache or the table may be modified to improve cache performance (e.g., to reduce cache misses or access data for related contexts using fewer accesses). | 04-02-2015 |
| 20150092835 | Methods for Comparing a Target Block to a Reference Window for Motion Estimation during Video Encoding - A method for comparing a target block to a reference window in motion estimation calculations, comprises the steps of: determining SAD calculations as a function of the target block and the reference window; reading the target block into registers; reading a segment of the reference window; updating the determined SAD calculations on the fly as a function of the read target block and the read segment of the reference window; and determining one or more sub-blocks of the reference window having minimum SAD values as a function of the updated SAD calculations; and if one or more of the minimum SAD values are not found, repeating the reading a segment step, the updating step and the determining step for a next segment of the reference window. | 04-02-2015 |
| 20150092836 | DECODING METHOD AND DEVICE FOR BIT STREAM SUPPORTING PLURALITY OF LAYERS - The present invention relates to a decoding method for a bit stream that supports a plurality of layers. The decoding method may include receiving information on a set of video parameters that includes information on the plurality of layers, and parsing the set of video parameters to grasp information on the layers in the bit stream. | 04-02-2015 |
| 20150092837 | INTER-VIEW DEPENDENCY TYPE IN MV-HEVC - A video decoder receives a value for a first syntax element representing whether a dependency type syntax element for a current layer is signaled, wherein the dependency type syntax element identifies a type of dependency of a current layer relative to a reference layer; and in response to the value for the first syntax element indicating that the dependency type syntax element is not signaled determines that the type of dependency of the current layer relative to the reference layer is a predetermined type and decodes a block of the current layer using inter-layer prediction conforming to the predetermined type. | 04-02-2015 |
| 20150092838 | DYNAMIC ADJUSTMENT OF IMAGE COMPRESSION FOR HIGH RESOLUTION LIVE MEDICAL IMAGE SHARING - A video stream of live medical images is generated at a local site having a medical image scanner. A live video stream is transmitted to at least one remote site via a network, which may include wired or wireless Internet connections. Network conditions are monitored during a network session and predictions are made on a predicted bit rate for transmission. The compression parameters for the live video stream are selected based on the predicted bit rate. | 04-02-2015 |
| 20150092839 | COMBINED REFERENCE PICTURE LIST CONSTRUCTION AND MAPPING - The example techniques of this disclosure are directed to default construction techniques for the construction of a combined reference picture list, and default mapping techniques for the combined reference picture list. In some examples, a video coder may construct first and second reference picture lists from frame number values, and construct the combined reference picture list from the frame number values of the first and second reference picture lists. In some examples, a video coder may construct first and second reference picture lists from picture order count (POC) values, and construct the combined reference picture list from the POC values of the first and second reference picture lists. In some examples, a video coder may construct a combined reference picture list from received information for the construction, and map the pictures of the combined reference picture list to one of a first or second reference picture list. | 04-02-2015 |
| 20150098497 | Motion Compensated De-interlacing and Noise Reduction - A video processing system for de-interlacing a video signal comprises a motion estimation block, a refinement motion estimation block, and a de-interlacer. The motion estimation block generates integer motion vectors for the video signal. The refinement motion estimation block generates fractional motion vectors as a function of the generated integer motion vectors and select frames of the video signal. The de-interlacer generates an output as a function of the generated fractional motion vectors and the selected frames of the video signal. | 04-09-2015 |
| 20150098498 | APPARATUS AND METHOD FOR COMPACT BIT-PLANE DATA COMPRESSION - An encoder includes a plurality of registers and is configured to: sequentially receive an array of coefficients, each of the coefficients being decomposed into a plurality of bits located at a plurality of corresponding bit positions of the coefficient; and concurrently operate on the plurality of bits of each of the coefficients. | 04-09-2015 |
| 20150098499 | IMAGE PROCESSING APPARATUS, IMAGE PICKUP APPARATUS, COMPUTER, IMAGE PROCESSING METHOD AND COMPUTER READABLE NON-TRANSITORY MEDIUM - An image processing apparatus that compresses image data according to a compression parameter, includes: a data acquisition section that acquires information on whether photographing condition data is added to the image data inputted or not and content of the photographing condition data; a compression parameter determination section that determines the compression parameter according to an acquisition result of the photographing condition data in the data acquisition section; and a compression processing section that applies compression processing to the image data according to the determined compression parameter, wherein the photographing condition data includes information related to presence or absence of an optical low-pass filter at time of photographing an image of the image data. | 04-09-2015 |
| 20150098500 | METHOD AND APPARATUS OF DERIVING INTRA PREDICTION MODE USING MOST PROBABLE MODE GROUP - Provided is a method that constructs an MPM group including three intra prediction modes, determines the intra prediction mode of the MPM group specified by the prediction mode index as the intra prediction mode of the current prediction unit if the mode group indicator indicates the MPM group, and derives the intra prediction mode of the current prediction unit using the prediction mode index and the three prediction modes of the MPM group if the mode group indicator does not indicate the MPM group. Accordingly, additional bits resulted from increase of a number of intra prediction mode are effectively reduced. Also, an image compression ratio can be improved by generating a prediction block similar to an original block. | 04-09-2015 |
| 20150103880 | ADAPTIVE VIDEO COMPRESSION FOR LATENCY CONTROL - One embodiment of the present invention sets forth a technique for adaptively compressing video frames. The technique includes encoding a first plurality of video frames based on a first video compression algorithm to generate first encoded video frames and transmitting the first encoded video frames to a client device. The technique further includes receiving a user input event, switching from the first video compression algorithm to a second video compression algorithm in response to the user input event, encoding a second plurality of video frames based on the second video compression algorithm to generate second encoded video frames, and transmitting the second encoded video frames to the client device. | 04-16-2015 |
| 20150103881 | IMAGE DECODING METHOD AND APPARATUS USING SAME - An image decoding method includes: receiving information on a set of reference pictures for configuring a set of reference pictures of a current picture, wherein the information on the set of reference pictures includes MSB that may calculate the MSB of POC of a long-term reference picture relative to the current picture, and flag information that represents whether there is MSB; and eliciting the set of reference pictures by using received MSB when the flag information is 1, and performing marking on the reference picture, wherein the flag information may be 1 when a temporal sub-layer identifier is 0, and there is at least one POC value for which a remainder obtained by dividing by a maximum value MaxPicOrderCntLsb is the same as LSB of the POC of the long-term reference picture, in a set of POCs of a previous picture including POC values related to the previous picture. | 04-16-2015 |
| 20150103882 | METHOD AND APPARATUS FOR DETERMINING REFERENCE PICTURE SET OF IMAGE - A method of determining a reference picture set (RPS), which is a set of reference pictures used in predictive decoding of a current picture that is to be decoded, is provided. The method includes: obtaining a flag indicating whether the RPS is determined based on picture order count (POC) values of the current picture and a previous picture or whether the RPS is determined based on an index of a reference RPS, which is an identification value of the reference RPS that is one of pre-defined RPSs and is referred to in determining the RPS, and a delta RPS that is a difference value between a POC vale of a reference picture included in the reference RPS and a POC value of a reference picture included in the RPS; and determining the RPS according to a value of the flag. | 04-16-2015 |
| 20150103883 | METHOD AND APPARATUS FOR FAST INTRA PREDICTION - An intra prediction method includes at least the following steps: performing a distortion estimation to evaluate a distortion value of a specific block under an intra prediction mode and a transform unit size; using the evaluated distortion value to set a distortion value of the specific block under a first block configuration, the intra prediction mode and the transform unit size; and using the evaluated distortion value to set a distortion value of the specific block under a second block configuration, the intra prediction mode, and the transform unit size. The first block configuration represents a first block size, and the second block configuration represents a second block size different from the first block size. | 04-16-2015 |
| 20150103884 | SIGNALING FOR SUB-DECODED PICTURE BUFFER (SUB-DPB) BASED DPB OPERATIONS IN VIDEO CODING - A method of decoding video data including receiving an encoded video bitstream that includes a plurality of pictures and storing the plurality of pictures in one or more sub-DPBs. The method further including receiving a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream. applying the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point, and performing a sub-DPB management process on the one or more sub-DPBs in accordance with the received respective single sets of sub-DPB parameters. | 04-16-2015 |
| 20150103885 | REAL TIME IP VIDEO TRANSMISSION WITH HIGH RESILIENCE TO NETWORK ERRORS - A method and system related to video transmission to increase resiliency to network errors, such as packet loss. Packet loss can lead to low quality or broken audio, pixilation, image freeze, and other distortions of a video signal. The system and method utilizes packet retransmission and FEC in combination to increase error recovery. Further, the system and method takes into account unique data source characteristics in order increase resilience to network error while minimizing overhead. Finally, the system and method takes into account network conditions, especially in networks with heterogeneous conditions, by separating uplinks and downlinks and adjusting to each individual link in order to provide optimal protection for each link. | 04-16-2015 |
| 20150103886 | HIGH LEVEL SYNTAX FOR HEVC EXTENSIONS - A video coding device may identify a network abstraction layer (NAL) unit. The video coding device may determine whether the NAL unit includes an active parameter set for a current layer. When the NAL unit includes the active parameter set for the current layer, the video coding device may set an NAL unit header layer identifier associated with the NAL unit to at least one of: zero, a value indicative of the current layer, or a value indicative of a reference layer of the current layer. The NAL unit may be a picture parameter set (PPS) NAL unit. The NAL unit may be a sequence parameter set (SPS) NAL unit. | 04-16-2015 |
| 20150103887 | DEVICE AND METHOD FOR SCALABLE CODING OF VIDEO INFORMATION - An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a first video layer and a second video layer. The processor is configured to process a first instance of a parameter set in a bitstream, the first instance of the parameter set comprising a first indication that the first video layer and the second video layer may utilize the parameter set, and process a second instance of the parameter set in the bitstream, the second instance of the parameter set comprising a second indication: (1) that the second video layer may utilize the parameter set, and (2) that the first video layer may not utilize the parameter set. The processor may encode or decode the video information. | 04-16-2015 |
| 20150103888 | SUPPORT OF MULTI-MODE EXTRACTION FOR MULTI-LAYER VIDEO CODECS - A computing device may obtain, from a first bitstream that includes a coded representation of the video data, a Supplemental Enhancement Information (SEI) message that includes an indication of an extraction mode that was used to produce the first bitstream. If the extraction mode is the first extraction mode, the first bitstream includes one or more coded pictures not needed for correct decoding of the target output layer set. If the extraction mode is the second extraction mode, the first bitstream does not include the one or more coded pictures not needed for correct decoding of the target output layer set. | 04-16-2015 |
| 20150103889 | ADAPTIVE FILTERING BASED UPON BOUNDARY STRENGTH - Adjacent regions are identified in an image. Coding parameters for the adjacent regions are identified. Selective filtering is performed at the region between the identified adjacent regions. | 04-16-2015 |
| 20150110169 | ENCODING METHOD FOR DISTRIBUTION OF MULTIMEDIA CONTENTS WITH ENFORCEMENT OF COMMERCIAL ADVERTISEMENT - Methods and systems for encoding multimedia content with enforcement of commercial advertisements are discussed in the disclosure. Some of the methods may require all or part of a commercial advertisement segment to be viewed and/or decoded in order to decode an entertainment segment. In some implementations, the disclosure provides for inserting commercial advertisements in a video stream. The various implementations discussed herein may require a viewer to watch all or part of a commercial segment in order to view an entertainment segment of multimedia content. | 04-23-2015 |
| 20150110170 | Method and Apparatus for Simplified Depth Coding with Extended Prediction Modes - A method and apparatus for Simplified Depth Coding (SDC) with extended Intra prediction modes are disclosed. Embodiments of the present invention use an extended Intra prediction mode set including Horizontal mode and Vertical mode. When the Horizontal mode is selected, the prediction samples for the current depth block are derived based on a reconstructed neighboring depth column adjacent to a left block boundary of the current depth block by generating rows of the prediction samples from the reconstructed neighboring depth column. When the Vertical mode is selected, the prediction samples for the current depth block are derived based on a reconstructed neighboring depth row adjacent to a top block boundary of the current depth block by generating columns of the prediction samples from the reconstructed neighboring depth row. | 04-23-2015 |
| 20150110171 | METHOD FOR MOTION ESTIMATION AND APPARATUS FOR PROCESSING IMAGE - Provided are a method for motion estimation and an apparatus for processing an image. The method includes extracting a pattern from any one frame, classifying the extracted pattern as any one of predetermined basic patterns, counting basic patterns of regions included in macroblocks according to types of the basic patterns to set representative basic patterns of the macroblocks, calculating at least one of a sum of absolute difference (SAD) term coefficient and a smoothness constraint (SC) term coefficient from a correlation between representative basic patterns of macroblocks included in a macroblock group, and calculating a cost function result using at least one of the calculated SAD term coefficient and SC term coefficient. | 04-23-2015 |
| 20150110172 | PARALLEL DECODING METHOD FOR LAYERED VIDEO CODING - Systems, methods, and instrumentalities are disclosed for parallel decoding of a layered video stream. A base layer video stream and an enhancement layer video stream may be received. A picture of the base layer video stream may be decoded via a first processing thread. An inter-layer reference picture associated with the base layer video stream may be generated via the first processing thread. The inter-layer reference picture may include one or more motion fields. A picture of the enhancement layer video stream may be decoded via a second thread using the inter-layer reference picture. The first processing thread and the second processing thread may be synchronized such that the decoding of the picture of the enhancement layer video stream is performed after the generation of the inter-layer reference picture. | 04-23-2015 |
| 20150117515 | Layered Encoding Using Spatial and Temporal Analysis - In some examples, a layered encoding component and a layered decoding component provide for different ways to encode and decode, respectively, video streams transmitted between devices. For instance, in encoding a video stream, video frames may be analyzed across multiple video frames to determine temporal characteristics, and analyzed spatially within a single given video frame. Further, based at partly on the analysis of the video frames, some video frames may be encoded with a first encoding and portions of other video frames may be encoded using a second layer encoding, where the second layer encoding may use a different type of encoding for different portions of a single given video frame. To decode an encoded video stream, both the base layer encoded video frames and the second layer encoded video frames may be transmitted, decoded, and combined at a destination device into a reconstructed video stream. | 04-30-2015 |
| 20150117516 | DYNAMIC VIDEO ENCODING BASED ON CHANNEL QUALITY - Various embodiments are generally directed to techniques to dynamically encode video based on channel quality and received video quality. An apparatus for dynamically encoding video includes a processor component; and a dynamic video encoder for execution by the processor component, the dynamic video encoder comprising a reference map generator to generate a reference map based on a channel quality corresponding to a plurality of encoded video frames to be transmitted over a channel, the reference map including indications of relationships between a plurality of video frames for purposes of encoding the plurality of video frames as the plurality of encoded video frames to increase a visual quality of the plurality of encoded video frames when transmitted over the channel and decoded. | 04-30-2015 |
| 20150117517 | VIDEO SIGNAL PROCESSING METHOD AND DEVICE - The present invention variably adjusts the maximum splitting information of a conversion unit according to the type of prediction unit and the splitting information on a coding unit and selects the optimal splitting information on the conversion unit. The present invention determines the maximum splitting information on the conversion unit of a depth block by using the maximum splitting information on the conversion unit for texture data. The present invention may lower complexity without a loss in efficiency by variably adjusting the maximum splitting information on the conversion unit in consideration of the characteristics of the depth data. The present invention may lower complexity by determining the maximum splitting information on the conversion unit of the depth data by using similar characteristics between the texture data and the depth data. | 04-30-2015 |
| 20150117518 | METHOD AND APPARATUS FOR ENCODING A VIDEO STREAM HAVING A TRANSPARENCY INFORMATION CHANNEL - Method for encoding a video stream having a transparency information channel in view of a predetermined target bit rate for said transparency information channel, comprising: tentatively applying a first encoding ( | 04-30-2015 |
| 20150117519 | ADAPTIVE INTER-COLOR COMPONENT RESIDUAL PREDICTION - A device for decoding video data includes a memory configured to store video data, and at least one processor. The at least one processor is configured to: determine a first bit-depth of luma residual samples for a block of video data, determine a second bit-depth of predicted chroma residual samples for the block of video data, adjust the luma residual samples based on the first bit-depth and the second bit-depth to produce bit-depth adjusted luma residual samples, determine chroma residual samples for the block of video data based on the bit-depth adjusted luma residual samples and the predicted chroma residual samples, and decode the block of video data based on the luma residual samples and the chroma residual samples. | 04-30-2015 |
| 20150124863 | CHROMA-BASED VIDEO CONVERTER - This disclosure describes a method and system for encoding an RGB24 video signal ( | 05-07-2015 |
| 20150124864 | IMAGE DECODING METHOD AND APPARATUS USING SAME - The present invention relates to an image decoding method and to an apparatus using same. The image decoding method includes the steps of: receiving a bitstream including random access image information; and predicting the random access image and an image following the random access image in terms of a decoding sequence on the basis of the random access image information. | 05-07-2015 |
| 20150124865 | COLOR RESIDUAL PREDICTION FOR VIDEO CODING - A method of decoding video data includes decoding a first block of video data to produce a block of reconstructed luma residual values and a block of predicted chroma residual values, wherein the block of video data has one of a 4:2:0 or a 4:2:2 chroma sub-sampling format. The method further includes performing a color residual prediction process to reconstruct a block of chroma residual values for the first block of video data using a subset of the reconstructed luma residual values as luma predictors for the block of predicted chroma residual values. | 05-07-2015 |
| 20150124866 | Apparatus and Method of Efficient Sample Adaptive Offset - A method and apparatus for sample adaptive offset (SAO) compensation of reconstructed video data are disclosed. In one embodiment, the relation between the current pixel and said one or more neighboring pixels is stored so that the SAO compensated current pixel can replace the current pixel without buffering the to-be-processed pixels for classification. The SAO process may be performed on a region by region basis to adapt to the local characteristics of the picture. | 05-07-2015 |
| 20150124867 | APPARATUS FOR CODING A BIT STREAM REPRESENTING A THREE-DIMENSIONAL VIDEO - The disclosure relates to an apparatus for coding a bit stream representing a three-dimensional video comprising a sequence of views, wherein a depth map is associated to each view, the depth map comprising depth information of the view with respect to a position to the camera capturing the view, the apparatus comprising: a partitioner for partitioning the depth map into coding units; a determiner for determining a type of model function for each coding unit based on the depth information of the coding unit; a reducer for reducing the coding unit to a single residual value for each segment generated by model function; and a signaler for signaling the model function used and the residual value into the bitstream. | 05-07-2015 |
| 20150124868 | MOVING PICTURE CODING/DECODING METHOD AND APPARATUS - An image decoding apparatus is provided. The image decoding apparatus includes a processor which obtains information about a color representation from a bitstream, obtains a residue, which corresponds to a difference between a current image and a predicted image of the current image, from the bitstream, and reconstructs the current image by using the residue and the predicted image, based on the information about the color representation. | 05-07-2015 |
| 20150124869 | Apparatus and Method of Sample Adaptive Offset for Video Coding - An apparatus and method for sample adaptive offset (SAO) to restore intensity shift of processed video data are disclosed. In an encoder side, the processed video data corresponding to reconstructed video data, deblocked-reconstructed video data, or adaptive loop filtered and deblocked-reconstructed video data are partitioned into regions smaller than a picture. The region partition information is signaled in a video bitstream located in a position before intensity offset values syntax. At the decoder side, the processed video data is partitioned into regions according to the partition information parsed from the bitstream at a position before intensity offset values syntax. Region-based SAO is applied to each region based on the intensity offset for the category of the region-based SAO type selected. | 05-07-2015 |
| 20150131713 | VIDEO CODING METHOD AND DEVICE USING HIGH-SPEED EDGE DETECTION, AND RELATED VIDEO DECODING METHOD AND DEVICE - A video encoding method and apparatus using fast edge detection for determining a split shape of a picture is disclosed. A split shape of coding units having a tree structure is obtained by replacing a sampling unit having a predetermined size with one of an edge pixel and a normal pixel based on a maximum high frequency component obtained through orthogonal transformation on the sampling unit and obtaining a down-sampled picture, and repeatedly performing a process of splitting the down-sampled picture into the coding units and splitting the coding unit into lower coding units according to whether the edge pixel is present in the coding unit. | 05-14-2015 |
| 20150131714 | COMPRESSION/DECOMPRESSION PROGRESSIVE D'UN FLUX NUMERIQUE VIDEO COMPRENANT AU MOINS UNE IMAGE ENTRELACEE - The subject of the present invention pertains to a device ( | 05-14-2015 |
| 20150131715 | IMAGE TRANSMISSION APPARATUS, IMAGE TRANSMISSION METHOD, AND RECORDING MEDIUM - Convention transmission of streams of moving images disadvantageously has a long stopping time because frame transmission skip and GOP transmission skip are performed in a case where a congestion of a transmission process occurs in a transmission side. An image transmission apparatus which transmits encoded data acquired by encoding an image according to the present invention includes a first acquiring unit configured to acquire information on a congestion of transmission of the encoded data, a second acquiring unit configured to acquire a priority level of a target tile that is one of tiles acquired by dividing the image, and a determination unit configured to determine encoded data corresponding to the target tile to be output externally from the image transmission apparatus based on the information on the congestion of transmission acquired by the first acquiring unit and the priority level of the target tile acquired by the second acquiring unit. | 05-14-2015 |
| 20150131716 | APPARATUS AND METHOD FOR PROCESSING IMAGE - An image processing device and method for an image processing device to compress, for each line, an image frame formed of a plurality of lines are provided. The method includes predicting an image quality of each line forming a single image frame, independently determining a compression rate of each line so as to obtain the image quality predicted for each line, and compressing an image data of a predetermined line of the single image frame by using a compression rate independently determined for the predetermined line. | 05-14-2015 |
| 20150131717 | METHOD AND APPARATUS FOR ENCODING VIDEO BY USING DEBLOCKING FILTERING, AND METHOD AND APPARATUS FOR DECODING VIDEO BY USING DEBLOCKING FILTERING - A method and apparatus for encoding video by using deblocking filtering, and a method and apparatus for decoding video by using deblocking filtering are provided. The method of encoding video includes: splitting a picture into a maximum coding unit; determining coding units of coded depths and encoding modes for the coding units of the maximum coding unit by prediction encoding the coding units of the maximum coding unit based on at least one prediction unit and transforming the coding units based on at least one transformation unit, wherein the maximum coding unit is hierarchically split into the coding units as a depth deepens, and the coded depths are depths where the maximum coding unit is encoded in the coding units; and performing deblocking filtering on video data being inversely transformed into a spatial domain in the coding units, in consideration of the encoding modes. | 05-14-2015 |
| 20150131718 | METHOD AND APPARATUS FOR ENCODING VIDEO BY USING DEBLOCKING FILTERING, AND METHOD AND APPARATUS FOR DECODING VIDEO BY USING DEBLOCKING FILTERING - A method and apparatus for encoding video by using deblocking filtering, and a method and apparatus for decoding video by using deblocking filtering are provided. The method of encoding video includes: splitting a picture into a maximum coding unit; determining coding units of coded depths and encoding modes for the coding units of the maximum coding unit by prediction encoding the coding units of the maximum coding unit based on at least one prediction unit and transforming the coding units based on at least one transformation unit, wherein the maximum coding unit is hierarchically split into the coding units as a depth deepens, and the coded depths are depths where the maximum coding unit is encoded in the coding units; and performing deblocking filtering on video data being inversely transformed into a spatial domain in the coding units, in consideration of the encoding modes. | 05-14-2015 |
| 20150139295 | DIGITAL VIDEO ENCODING METHOD - A method for encoding a digital video image producing a high resolution is proposed. A source digital video image is segmented into a plurality of video frames and each such frame is segmented into a plurality of blocks composed of pixels. An encoded digital video image is formed from a sequence of the frames. Each subsequent frame is added to the encoded image if the frame is entirely different from the previous frame. If a subsequent frame repeats the previous frame, then a command is added to repeat the previous video frame. If a subsequent frame is not entirely different, then a command is added to the encoded image to repeat the previous frame taking into account the differing blocks. The pixels in the encoded image are formed having a square shape, regardless of their compression ratio. The encoded image can be saved to at least one media server. | 05-21-2015 |
| 20150139296 | INTRA BLOCK COPY FOR INTRA SLICES IN HIGH EFFICIENCY VIDEO CODING (HEVC) - A method for decoding high efficiency video coding, comprising determining whether a coding unit is within an intra slice or an inter slice, determining whether intra block copy has been enabled, reviewing syntax for said coding unit for an intra block copy flag when the coding unit is within an intra slice and intra block copy has been enabled, and omitting reviewing the syntax for the intra block copy flag when the coding unit is within an inter slice. | 05-21-2015 |
| 20150139297 | METHOD AND APPARATUS FOR ENTROPY CODING VIDEO AND METHOD AND APPARATUS FOR ENTROPY DECODING VIDEO - Provided are entropy decoding and encoding methods of a video. The entropy decoding method includes obtaining a transformation unit significant coefficient flag indicating whether a non-zero transformation coefficient exists in the transformation unit, from a bitstream, determining a context model for arithmetically decoding the transformation unit significant coefficient flag, based on the transformation depth of the transformation unit and arithmetically decoding the transformation unit significant coefficient flag based on the determined context model. | 05-21-2015 |
| 20150139298 | METHOD AND APPARATUS FOR CODING VIDEO AND METHOD APPARATUS FOR DECODING VIDEO, ACCOMPANIED WITH INTRA PREDICTION - A video decoding method involving intra prediction includes: parsing a most probable mode (MPM) flag of a block while parsing symbols of the block of an encoded video from a received bitstream; determining whether a predetermined number of a plurality of candidate intra prediction modes are used to predict an intra prediction mode of the block based on the MPM flag; when it is determined that the plurality of candidate intra prediction modes are used based on the MPM flag, determining the plurality of candidate intra prediction modes based on intra prediction modes of a left block and an upper block that are adjacent to the block while restoring the intra prediction mode of the block by using the parsed symbols. | 05-21-2015 |
| 20150139299 | METHOD AND APPARATUS FOR CODING VIDEO AND METHOD AND APPARATUS FOR DECODING VIDEO ACCOMPANIED WITH ARITHMETIC CODING - A method of decoding a video through symbol decoding includes parsing symbols of image blocks from a received bitstream; classifying a current symbol into a prefix bit string and a suffix bit string based on a threshold value determined according to a size of a current block; performing arithmetic decoding of the prefix bit string and the suffix bit string by using respective arithmetic decoding methods determined for each of the prefix bit string and the suffix bit string; performing inverse binarization of the prefix bit string and the suffix bit string by using respective binarization methods determined for each of the prefix bit string and the suffix bit string; and restoring the image blocks by performing an inverse transformation operation and a prediction operation on the current block by using the current symbol restored through the arithmetic decoding and the inverse binarization. | 05-21-2015 |
| 20150139300 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE - A method for decoding an image, according to the present invention, comprises the steps of: deciding a prediction mode that corresponds to a chroma component block; deciding a transform skip mode of the chroma component block from a plurality of transform skip mode candidates, according to the prediction mode that corresponds to the chroma component block; and reverse-transforming the chroma component block on the basis of the transform skip mode that is decided. | 05-21-2015 |
| 20150139301 | METHOD AND APPARATUS FOR DECODING VIDEO ACCORDING TO INDIVIDUAL PARSING OR DECODING IN DATA UNIT LEVEL, AND METHOD AND APPARATUS FOR ENCODING VIDEO FOR INDIVIDUAL PARSING OR DECODING IN DATA UNIT LEVEL - A video decoding method including: extracting, from a bitstream of an encoded video, at least one of information indicating independent parsing of a data unit and information indicating independent decoding of a data unit; extracting encoded video data and information about a coded depth and an encoding mode according to maximum coding units by parsing the bitstream based on the information indicating independent parsing of the data unit; and decoding at least one coding unit according to a coded depth of each maximum coding unit of the encoded video data, based on the information indicating independent decoding in the data unit and the information about the coded depth and the encoding mode according to maximum coding units. | 05-21-2015 |
| 20150146774 | METHOD AND APPARATUS OF DERIVING INTRA PREDICTION MODE USING MOST PROBABLE MODE GROUP - Provided is a method that constructs an MPM group including three intra prediction modes, determines the intra prediction mode of the MPM group specified by the prediction mode index as the intra prediction mode of the current prediction unit if the mode group indicator indicates the MPM group, and derives the intra prediction mode of the current prediction unit using the prediction mode index and the three prediction modes of the MPM group if the mode group indicator does not indicate the MPM group. Accordingly, additional bits resulted from increase of a number of intra prediction mode are effectively reduced. Also, an image compression ratio can be improved by generating a prediction block similar to an original block. | 05-28-2015 |
| 20150146775 | METHOD AND APPARATUS FOR COEFFICIENT SCAN BASED ON PARTITION MODE OF PREDICTION UNIT - Provided are a method and an apparatus for coefficient scan on the base of a partition mode of a prediction unit. The method comprises the steps of: determining a scan method on the basis of a partition mode of a prediction unit; and encoding the information about the scan method, wherein the scan method is determined, on the basis of RDO (Rate Distortion optimization), from among the extracted candidate scan methods which have been extracted with consideration of the shapes of the partitions of the partition mode. | 05-28-2015 |
| 20150296205 | Systems and Methods for Encoding Alternative Streams of Video for Use in Adaptive Bitrate Streaming - Systems and methods for encoding alternative streams for use in adaptive bitrate streaming based upon the delay of each stream in accordance with embodiments of the invention are described. One embodiment of the invention includes memory, and a processor configured by a source encoding application to: receive multimedia content, where the multimedia content includes source video data having a primary resolution and a primary sample aspect ratio; and encode the source video data as a set of alternative video streams, where: the alternative video streams have different maximum bitrates; and the alternative video streams are encoded to have an upper bound seek delay that is equal to or less than the upper bound seek delay of streams in the set of alternative video streams that are encoded at a higher maximum bitrate. | 10-15-2015 |
| 20150296215 | FRAME ENCODING USING HINTS - Embodiments are directed to encoding frames in response to supplemental encoding instructions, to providing encoding information for frames and to compiling software code that includes encoding hints. In one embodiment, in response to accessing frame information associated with a frame, a computer system interprets the frame information as being a supplemental encoding instruction for encoding a specified portion of the frame. The computer system then encodes the frame so that the specified portion of the frame is encoded in accordance with the supplemental encoding instruction. | 10-15-2015 |
| 20150296217 | APPARATUS AND METHOD FOR ENCODING/DECODING IMAGES - A method performed by a video encoding apparatus, includes: encoding block mode information indicating whether a block mode of a current block to be decoded is a skip mode; when the block mode of the current block is the skip mode, encoding a skip motion information of the current block without encoding information on residual signals of the current block, wherein the skip motion information is used for determining a motion vector of the current block; and when the block mode of the current block is not the skip mode, encoding prediction information of the current block, and encoding partition information of a tree structure related to dividing the current block into one or more subblocks, and thereby encoding information on residual signals of the subblocks. | 10-15-2015 |
| 20150304659 | CODING METHOD AND CODING APPARATUS - The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is “inter_pred_flag”. | 10-22-2015 |
| 20150304660 | SAMPLING RATE CONVERTER - A position coordinate difference computing unit ( | 10-22-2015 |
| 20150304664 | SIGNALING REFERENCE LAYERS FOR 3D COLOR PREDICTION FOR COLOR GAMUT SCALABILITY - Techniques are described for performing constrained three-dimensional (3D) color prediction for color gamut scalability in video coding. Color prediction techniques for color gamut scalability may be used by video coders to generate inter-layer reference pictures when a color gamut for a reference layer of video data is different than a color gamut for an enhancement layer of the video data, or when a bit depth of the reference layer is different than a bit depth of the enhancement layer. According to the techniques, a video coder may perform 3D color prediction with constrained bit depths of input and output color components of the 3D lookup table. According to further techniques, in the case of multiple layers, a video coder may perform 3D color prediction with constrained application to reference pictures in only one or more identified reference layers. | 10-22-2015 |
| 20150304665 | METHOD AND APPARATUS FOR VIDEO CODING AND DECODING - There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments, to indicate a composition of pictures of different time instants, some usability information may be embedded to the video bitstream indicating the intended display behavior when more than one layer is used and associated display behavior using this information. More specifically, the embedded information may indicate how the layers need to be composed in the video bitstream. The information may indicate if the intended display behaviour is to combine (overlay) base layer and enhancement layer decoded pictures. The information may indicate that the base and enhancement layer decoded pictures are allowed to be overlaid. In addition or alternatively, the information may indicate that the enhancement layer picture should not be combined with base layer picture during display. | 10-22-2015 |
| 20150304667 | EFFICIENT SCALABLE CODING CONCEPT - Scalable coding concepts are described. One aspect improves parallel decoding of inter-dependent layers of a multi-layer video data stream by introducing a long-term syntax element structure for guaranteeing that during a predetermined time period the pictures of the dependent layer are subdivided so that borders of the spatial segments of the pictures of the second layer and the spatial segments of the first layer overlay. Another aspect concerns upsampling from base layer to enhancement layer. Another aspect introduces a long-term syntax element structure allowing the decoder to determine the inter-layer offset for a predetermined time period. Another aspect introduces a type indicator field changing a way a layer indicator field within the NAL unit headers is to be interpreted. Another aspect allows different codecs/standards to be used for the different layers. Another aspect concerns a syntax element structure which indicates the inter-layer offset in units of the base layer blocks. | 10-22-2015 |
| 20150312566 | MOVING PICTURE CODING METHOD AND A MOVING PICTURE DECODING METHOD - A moving picture coding apparatus includes a motion estimation unit ( | 10-29-2015 |
| 20150312567 | IMAGE DECODING DEVICE AND METHOD THEREOF USING INTER-CODED PREDICTIVE ENCODING CODE - An image encoding device and corresponding decoding device are disclosed for achieving a high rate of compression. The encoding device includes an image conversion module that converts the direction of the images using right-left symmetry mode convention or up-down symmetry mode conversion. Encoding modules are used to encode both the unconverted and converted images. A mode selector module compares the quantity of codes in the encoded unconverted images and the quantity of codes in the encoded converted images, and selects codes that are smaller in the quantity of codes for output. | 10-29-2015 |
| 20150312568 | METHOD AND TECHNICAL EQUIPMENT FOR VIDEO ENCODING AND DECODING - There are disclosed various methods, apparatuses and computer program products for video encoding/decoding. In some embodiments the method comprises decoding a coding unit being coded with palette coding, wherein an indication of a scan order of the palette mode is decoded for said coding unit. Mode information for at least one pixel within the coding unit is decoded. Depending on the mode information, a decoded pixel value is set based on indicated scan order; or an indication to determine the number of the pixels sharing the value and indication for a reconstruction value of number of pixels are decoded; or an indication for a reconstruction value of a pixel is decoded. | 10-29-2015 |
| 20150312572 | ADJUSTING ENCODING PARAMETERS AT A MOBILE DEVICE BASED ON A CHANGE IN AVAILABLE NETWORK BANDWIDTH - A method includes encoding, at a mobile device having a camera, a first portion of a media stream captured by the camera based on an encoding parameter. The method also includes sending the encoded first portion of the media stream from the mobile device to a computing device via a network connection. The method further includes detecting a change in available network bandwidth of the network connection. The method includes automatically adjusting the encoding parameter in response to the change in the available network bandwidth. The method also includes encoding a second portion of the media stream based on the adjusted encoding parameter and sending the encoded second portion of the media stream from the mobile device to the computing device. | 10-29-2015 |
| 20150312573 | METHOD AND TECHNICAL EQUIPMENT FOR VIDEO ENCODING AND DECODING - There are disclosed various methods, apparatuses and computer program products for video encoding/decoding. In some embodiments the method comprises signalling a long-term palette information, where the long-term palette information comprises at least information on the color values for each entry in the long-term palette; generating a palette that is used for coding a coding unit by either selecting at least one color value from a long-term palette or by separately signaling at least one color value, or performing both. Alternatively the method comprises constructing a long-term palette during an encoding process or a decoding process; and updating the long-term palette dynamically after coding a coding unit, and constructing a palette used for encoding or decoding a coding unit using information from the long-term palette. | 10-29-2015 |
| 20150312578 | IMAGE PROCESSING DEVICE AND METHOD - Provided is an image processing device including a receiving section configured to receive a bitstream obtained by encoding an image having at least one layer and buffer management parameter information of each layer indicating at least one of that a parameter for managing a decoder buffer is a parameter for performing a decoding process of only a corresponding layer and that the parameter for managing the decoder buffer is a parameter for performing a decoding process of a corresponding layer and a lower layer, and a decoding section configured to decode the bitstream received by the receiving section and generate an image. | 10-29-2015 |
| 20150312580 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - A method comprising: encoding a first picture on a first scalability layer and on a lowest temporal sub-layer; encoding a second picture on a second scalability layer and on the lowest temporal sub-layer, wherein the first picture and the second picture represent the same time instant, encoding one or more first syntax elements, associated with the first picture, with a value indicating that a picture type of the first picture is other than a step-wise temporal sub-layer access (STSA) picture; encoding one or more second syntax elements, associated with the second picture, with a value indicating that a picture type of the second picture is a step-wise temporal sub-layer access picture; and encoding at least a third picture on a second scalability layer and on a temporal sub-layer higher than the lowest temporal sub-layer. | 10-29-2015 |
| 20150312581 | IMAGE PROCESSING DEVICE AND METHOD - Provided is an image processing device including a receiving section configured to receive hierarchical image encoded data in which image data that is hierarchized into layers is encoded, a pixel filling section configured to fill, with a pixel of a base layer, an unavailable peripheral pixel positioned in a periphery of a current block that is used in intra prediction to he performed when an enhancement layer of the hierarchical image encoded data is decoded, an intra prediction section configured to perform intra prediction on the current block to generate a predictive image of the current block using the peripheral pixel that is filled with the pixel of the base layer by the pixel filling section when necessary, and a decoding section configured to decode the enhancement layer of the hierarchical image encoded data received by the receiving section using the predictive image generated by the intra prediction section. | 10-29-2015 |
| 20150312582 | SCALABLE VIDEO CODING USING REFERENCE AND SCALED REFERENCE LAYER OFFSETS - A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). In order to accommodate other applications such as interlace/progressive scalability and to increase the resolution of the alignment between layers, it is proposed that the phase offset adjustment parameters be signaled. | 10-29-2015 |
| 20150312586 | IMAGE DECODING DEVICE AND METHOD THEREOF USING INTER-CODED PREDICTIVE ENCODING CODE - An image encoding device and corresponding decoding device are disclosed for achieving a high rate of compression. The encoding device includes an image conversion module that converts the direction of the images using right-left symmetry mode convention or up-down symmetry mode conversion. Encoding modules are used to encode both the unconverted and converted images. A mode selector module compares the quantity of codes in the encoded unconverted images and the quantity of codes in the encoded converted images, and selects codes that are smaller in the quantity of codes for output. | 10-29-2015 |
| 20150312587 | IMAGE DECODING DEVICE AND METHOD THEREOF USING INTER-CODED PREDICTIVE ENCODING CODE - An image encoding device and corresponding decoding device are disclosed for achieving a high rate of compression. The encoding device includes an image conversion module that converts the direction of the images using right-left symmetry mode convention or up-down symmetry mode conversion. Encoding modules are used to encode both the unconverted and converted images. A mode selector module compares the quantity of codes in the encoded unconverted images and the quantity of codes in the encoded converted images, and selects codes that are smaller in the quantity of codes for output. | 10-29-2015 |
| 20150312592 | METHODS AND APPARATUSES FOR CODING AND DECODING DEPTH MAP - Embodiments of the present invention provide methods and apparatuses for coding and decoding a depth map. The coding method includes: obtaining prediction data corresponding to a current image block of the depth map, obtaining a predicted pixel value from the prediction data according to a preset step, and calculating a first average value of the prediction data according to the predicted pixel value, where the preset step is a positive integer except 1; obtaining a residual of the current image block according to the first average value of the prediction data and a pixel value of a pixel of the current image block; and coding the residual of the current image block. In this way, coding and decoding efficiency can be improved. | 10-29-2015 |
| 20150312596 | Image Processing Method and Apparatus - An image processing method and apparatus, the image processing method including receiving a first largest coding unit of an image, where the first largest coding unit is a currently received largest coding unit; determining a compensation parameter of the first largest coding unit; performing pixel compensation on at least one area of the first largest coding unit according to the compensation parameter of the first largest coding unit; and performing pixel compensation on at least one area, on which pixel compensation is not performed, of a second largest coding unit according to a compensation parameter of the second largest coding unit, where the second largest coding unit is a previously received largest coding unit adjacent to the first largest coding unit. | 10-29-2015 |
| 20150319431 | IMAGE DECODING DEVICE AND METHOD THEREOF USING INTER-CODED PREDICTIVE ENCODING CODE - An image encoding device and corresponding decoding device are disclosed for achieving a high rate of compression. The encoding device includes an image conversion module that converts the direction of the images using right-left symmetry mode convention or up-down symmetry mode conversion. Encoding modules are used to encode both the unconverted and converted images. A mode selector module compares the quantity of codes in the encoded unconverted images and the quantity of codes in the encoded converted images, and selects codes that are smaller in the quantity of codes for output. | 11-05-2015 |
| 20150319432 | VIDEO DETECTION IN REMOTE DESKTOP PROTOCOLS - Embodiments of the present disclosure provide for dividing a display area having rendered data thereon into a plurality of tiles and determining an update frequency for each tile. A determination is then made as to whether the update frequency of each tile exceeds a threshold. For each tile whose update frequency exceeds the threshold, that tile is marked as a candidate tile. Each of the adjacent candidate tiles are then associated to form a heat map. The heat map is then analyzed to determine whether to encode the rendered data associated with the heat map. | 11-05-2015 |
| 20150319441 | CONTENT ADAPTIVE ENTROPY CODING OF PARTITIONS DATA FOR NEXT GENERATION VIDEO - Techniques related to content adaptive entropy coding of partitions data are described. | 11-05-2015 |
| 20150319448 | DETERMINATION BITSTREAM DECODING CAPABILITY IN VIDEO CODING - A multi-layer video decoder is configured to determine, based on a list of triplet entries, whether the multi-layer video decoder is capable of decoding a bitstream that comprises an encoded representation of the multi-layer video data. The number of triplet entries in the list is equal to a number of single-layer decoders in the multi-layer video decoder. Each respective triplet entry in the list of triplet entries indicates a profile, a tier, and a level for a respective single-layer decoder in the multi-layer video decoder. The multi-layer video decoder is configured such that, based on the multi-layer video decoder being capable of decoding the bitstream, the multi-layer video decoder decodes the bitstream. | 11-05-2015 |
| 20150326854 | METHOD AND APPARATUS FOR ENCODING IMAGES AND METHOD AND APPARATUS FOR DECODING IMAGES - An apparatus for decoding an image includes an encoding information extractor which extracts split information indicating whether to split a coding unit of an upper depth into coding units of deeper depths and skip information indicating whether a prediction mode of a current coding unit is a skip mode, from image data and a decoding unit which determines a split structure of a maximum coding unit, according to the split information so that the maximum coding unit is hierarchically split as a depth increases and determines whether the prediction mode of the current coding unit is the skip mode according to the skip information. | 11-12-2015 |
| 20150326861 | MOBILE ELECTRONIC DEVICE AND VIDEO COMPENSATION METHOD THEREOF - A mobile electronic device, which includes a network unit, a packet detecting unit, a bandwidth monitoring unit, a media access control (MAC) layer monitoring unit and a processing unit. The network unit receives a video stream through a wireless network, wherein the video stream includes a plurality of packets. The packet detecting unit is coupled to the network unit, and monitors a packet receiving condition of the network unit. The bandwidth monitoring unit is coupled to the network unit, and monitors a bandwidth of the network unit for receiving the video stream. The MAC layer monitoring unit is coupled to the network unit, and monitors a plurality of MAC layer information data of the network unit. The processing unit determines whether to execute a image interpolation procedure to the video stream according to the packet receiving condition, the bandwidth and/or the MAC layer information data. | 11-12-2015 |
| 20150326864 | METHOD AND TECHNICAL EQUIPMENT FOR VIDEO ENCODING AND DECODING - The application relates to a method and technical equipment for decoding a coding unit being coded with palette mode, comprising decoding an indication of presence of escape coding within the coding unit; determining the size of the palette based on said indication of presence of escape coding; determining which palette index indicates escape coding for a sample; comparing a decoded palette index to said palette index indicating escape coding and in the case the indexes match, decoding sample value information; and assigning the decoded sample value for a sample within said coding unit. In addition, the application relates to a method and technical equipment for encoding. | 11-12-2015 |
| 20150326886 | METHOD AND APPARATUS FOR LOOP FILTERING - A method and apparatus for loop processing of reconstructed video in an encoder system are disclosed. The loop processing comprises an in-loop filter and one or more adaptive filters. The filter parameters for the adaptive filter are derived from the pre-in-loop video data so that the adaptive filter processing can be applied to the in-loop processed video data without the need of waiting for completion of the in-loop filter processing for a picture or an image unit. In another embodiment, two adaptive filters derive their respective adaptive filter parameters based on the same pre-in-loop video data. In yet another embodiment, a moving window is used for image-unit-based coding system incorporating in-loop filter and one or more adaptive filters. The in-loop filter and the adaptive filter are applied to a moving window of pre-in-loop video data comprising one or more sub-regions from corresponding one or more image units. | 11-12-2015 |
| 20150326887 | Method for dynamically adapting the encoding of an audio and/or video stream transmitted to a device - The present invention concerns a method for dynamically adapting the lossy encoding of an audio and/or video stream ( | 11-12-2015 |
| 20150334387 | COUNT TABLE MAINTENANCE APPARATUS FOR MAINTAINING COUNT TABLE DURING PROCESSING OF FRAME AND RELATED COUNT TABLE MAINTENANCE METHOD - A count table maintenance apparatus for maintaining a count table referenced to apply a backward adaptation to a probability table. The count table maintenance apparatus includes a count data access interface, at least one buffer, and at least one count data updating circuit. The count data access interface determines a read address and a write address of the storage apparatus. The at least one buffer buffers at least one input count data, wherein the at least one input count data is derived from count data read from the count table according to the read address. The at least one count data updating circuit updates the at least one input count data read from the at least one buffer to generate at least one updated count data, and store the at least one updated count data into the storage apparatus according to the write address. | 11-19-2015 |
| 20150334404 | METHOD AND APPARATUS FOR VIDEO ENCODING FOR EACH SPATIAL SUB-AREA, AND METHOD AND APPARATUS FOR VIDEO DECODING FOR EACH SPATIAL SUB-AREA - Provided are a video encoding method and a video decoding method according to spatial subdivisions based on splitting a picture into a first tile and a second tile, and splitting a current tile among the first tile and the second tile into at least one slice segment, encoding the first tile and the second tile, independently from each other, and encoding maximum coding units of a current slice segment among the at least one slice segment included in the current tile, with respect to the at least one slice segment included in the current tile. | 11-19-2015 |
| 20150334405 | METHOD, APPARATUS AND SYSTEM FOR COPYING A BLOCK OF VIDEO SAMPLES - A method of copying a block of samples of a video bitstream, is disclosed. A plurality of adaptation parameters is read from a local memory store. Each adaptation parameter corresponds to a component of a multi-dimensional vector in the video bitstream. Each of the components of the vector is decoded from the video bitstream using the corresponding adaptation parameter. The block of samples is copied from the video bitstream. The spatial location of the block of samples is identified using the decoded components of the vector. | 11-19-2015 |
| 20150334408 | METHOD AND APPARATUS FOR VIDEO ENCODING FOR EACH SPATIAL SUB-AREA, AND METHOD AND APPARATUS FOR VIDEO DECODING FOR EACH SPATIAL SUB-AREA - Provided are a video encoding method and a video decoding method according to spatial subdivisions based on splitting a picture into a first tile and a second tile, and splitting a current tile among the first tile and the second tile into at least one slice segment, encoding the first tile and the second tile, independently from each other, and encoding maximum coding units of a current slice segment among the at least one slice segment included in the current tile, with respect to the at least one slice segment included in the current tile. | 11-19-2015 |
| 20150334409 | METHOD AND APPARATUS FOR VIDEO ENCODING FOR EACH SPATIAL SUB-AREA, AND METHOD AND APPARATUS FOR VIDEO DECODING FOR EACH SPATIAL SUB-AREA - Provided are a video encoding method and a video decoding method according to spatial subdivisions based on splitting a picture into a first tile and a second tile, and splitting a current tile among the first tile and the second tile into at least one slice segment, encoding the first tile and the second tile, independently from each other, and encoding maximum coding units of a current slice segment among the at least one slice segment included in the current tile, with respect to the at least one slice segment included in the current tile. | 11-19-2015 |
| 20150334410 | METHOD AND APPARATUS FOR VIDEO ENCODING FOR EACH SPATIAL SUB-AREA, AND METHOD AND APPARATUS FOR VIDEO DECODING FOR EACH SPATIAL SUB-AREA - Provided are a video encoding method and a video decoding method according to spatial subdivisions based on splitting a picture into a first tile and a second tile, and splitting a current tile among the first tile and the second tile into at least one slice segment, encoding the first tile and the second tile, independently from each other, and encoding maximum coding units of a current slice segment among the at least one slice segment included in the current tile, with respect to the at least one slice segment included in the current tile. | 11-19-2015 |
| 20150334412 | METHOD OF CODING A FIRST AND A SECOND VERSION OF AN IMAGE INTO A BASE LAYER AND AN ENHANCEMENT LAYER BASED ON A COLOR GAMUT MAPPING MODEL - The method comprises the steps of: —determining, for each color of the second version, corresponding scalar value(s) of one or two variable(s) such that, if said scalar value(s) is applied to the color gamut mapping model, a mapped color is obtained having a minimal distance to the corresponding color of the first version (i.e. enhanced) to the color of second version, —encoding the determined scalar value(s) into an enhancement layer. | 11-19-2015 |
| 20150334416 | VARIABLE CODING RESOLUTION IN VIDEO CODEC - A video codec provides for encoding and decoding pictures of a video sequence at various coded resolutions, such that pictures can be encoded at lower coded resolutions based on bit rate or other constraints while maintaining a consistent display resolution. The video codec employs a coding syntax where a maximum coded resolution is signaled at the sequence level of the syntax hierarchy, whereas a lower coded resolution is signaled at the entry point level for a segment of one or more intra-coded frames and frames predictively encoded based thereon. This allows the use of a separate out-of-loop resampler after the decoder to up-sample the pictures to the display resolution. | 11-19-2015 |
| 20150334424 | IMAGE CODING DEVICE, IMAGE CODING METHOD, PROGRAM THEREOF, IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND PROGRAM THEREOF - A linear interpolation filter used for intra-prediction is applied to not only a luminance signal, but also a chrominance signal. A noise like contouring, which may occur in the chrominance signal, is reduced by performing control independently on the chrominance signal. Also, only a square block has been supported in related art. However, a rectangular block is also supported. Accordingly, 4:2:2 can be applied. | 11-19-2015 |
| 20150341634 | METHOD, APPARATUS AND SYSTEM TO SELECT AUDIO-VIDEO DATA FOR STREAMING - Techniques and mechanisms for processing portions of an audio-video data stream. In an embodiment, a device operates in a first mode to download via a network first data of an AV stream, the first data encoded according to a first coding scheme. Based on a current state of the network, the device may transition to a second mode to download second data of the AV stream which is encoded according to a second coding scheme. In another embodiment, only one of the first coding scheme and the second coding scheme supports a scalability feature. The device further evaluates the first downloaded data and the second downloaded data to determine whether other AV data is to be downloaded to mitigate a change in a quality of experience for a resulting AV display. | 11-26-2015 |
| 20150341636 | Method and Apparatus of Adaptive Intra Prediction for Inter-Layer and Inter-View Coding - A method and apparatus of inter-layer and the inter-view adaptive Intra prediction (IL-AIP and IV-AIP) for a video coding system are disclosed. The video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) for the inter-layer video coding system, and the video data is configured into a Base View (BV) and an Enhancement View (EV) for the inter-view video coding system. The adaptive Intra predictor for the to-be-processed block in the EL or the EV is derived based on the BL or the BV. For inter-layer and inter-view adaptive LM Intra prediction, the LM adaptive Intra predictor for the to-be-processed chroma block in the EL or the EV is derived based on the BL or the BV. | 11-26-2015 |
| 20150341641 | Method, apparatus and system for encoding and decoding a sample adaptive offset data of encoded video data - Disclosed is a method of decoding ( | 11-26-2015 |
| 20150341642 | VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND APPARATUS USING SAME - The present invention relates to a video encoding method, to a video decoding method, and to an apparatus using same. The video encoding method according to the present invention comprises the steps of: setting a tile and a slice for the inputted current picture; performing encoding based on the tile and the slice; and a step of transmitting the encoded video information. The current picture may include one or more tiles and one or more slices. The largest coding units (hereinafter, referred to as LCUs) in the slice may be arranged based on a tile scan. | 11-26-2015 |
| 20150341643 | ADVANCED SCREEN CONTENT CODING WITH IMPROVED PALETTE TABLE AND INDEX MAP CODING METHODS - An apparatus is configured to perform a method for screen content encoding. The method includes deriving a palette table and a color index map based on a coding unit (CU). The method also includes encoding the palette table and encoding the color index map. The method further includes combining the encoded palette table and the encoded color index map for transmission to a receiver, where the palette table and index map are decoded to reconstruct a pixel block. | 11-26-2015 |
| 20150341644 | Individual Buffer Management in Transport of Scalable Video - A method is provided to determine buffer parameter settings for a plurality of layers in a transport stream. Each layer includes a respective transport stream buffer parameter setting. Then, the method provides respective transport stream buffer parameter settings to individual transport stream buffers for respective layers in the plurality of layers. Then, the method buffers the respective layers in the individual transport stream buffers according to the respective transport stream buffer parameter settings. After buffering, the method combines the respective layers to form a combined bit stream. | 11-26-2015 |
| 20150341645 | Signaling for Addition or Removal of Layers in Scalable Video - A method of signaling individual layers in a transport stream is provided that includes: determining a plurality of layers in a transport stream, wherein each layer includes a respective transport stream parameter setting; determining an additional layer for the plurality of layers in the transport stream, wherein the additional layer enhances one or more of the plurality of layers including a base layer and the respective layer parameter settings for the plurality of layers do not take into account the additional layer; and determining an additional transport stream parameter setting for the additional layer, the additional transport stream parameter setting specifying a relationship between the additional layer and at least a portion of the plurality of layers, wherein the additional transport stream parameter setting is used to decode the additional layer and the at least a portion of the plurality of layers. | 11-26-2015 |
| 20150350641 | DYNAMIC RANGE ADAPTIVE VIDEO CODING SYSTEM - A video coding/decoding system codes data efficiently even when input video data exhibits changes in dynamic range. The system may map pixel values of the first frame from a dynamic range specific to the input image data to a second dynamic range that applies universally to a plurality of frames that have different dynamic ranges defined for them. The system may code the mapped pixel values to reduce bandwidth of the mapped frame data, and thereafter transmit the coded image data to a channel. | 12-03-2015 |
| 20150350645 | METHOD FOR ENCODING AND DECODING IMAGES BASED ON CONSTRAINED OFFSET COMPENSATION AND LOOP FILTER, AND APPARATUS THEREFOR - Provided are a method and apparatus for encoding and decoding images based on constrained offset compensation and a loop filter. The image decoding apparatus: receives, from an encoder, a first indicator indicating whether a sequence, a picture, a frame, a slice, a coding unit (CU), a prediction unit (PU), and/or a transform unit (TU) supports constrained offset compensation; receives, from the encoder, a second indicator indicating whether constrained sample adaptive offset (SAO) compensation or an adaptive loop filter (ALF) is applied; receives a parameter from the encoder; and applies the SAO compensation or the ALF to pixels of a restored image on the basis of the second indicator and the parameter. | 12-03-2015 |
| 20150350646 | ADAPTIVE SYNTAX GROUPING AND COMPRESSION IN VIDEO DATA - An encoding system may include a video source that captures video image, a video coder, and a controller to manage operation of the system. The video coder may encode the video image into encoded video data using a plurality of subgroup parameters corresponding to a plurality of subgroups of pixels within a group. The controller may set the subgroup parameters for at least one of the subgroups of pixels in the video coder, based upon at least one parameters corresponding to the group. A decoding system may decode the video data based upon the motion prediction parameters. | 12-03-2015 |
| 20150350648 | Method and Apparatus of Adaptive Loop Filtering - A method and apparatus for processing of coded video using in-loop processing are disclosed. Input data to the in-loop processing is received and the input data corresponds to reconstructed or reconstructed-and-deblocked coding units of the picture. The input data is divided into multiple filter units and each filter unit includes one or more boundary-aligned reconstructed or reconstructed-and-deblocked coding units. A candidate filter is then selected from a candidate filter set for the in-loop processing. The candidate filter set comprises at least two candidate filters the said in-loop processing corresponding to adaptive loop filter (ALF), adaptive offset (AO), or adaptive clipping (AC). The in-loop processing is then applied to one of the filter units to generate a processed filter unit by using the candidate filter selected to all boundary-aligned reconstructed or reconstructed-and-deblocked coding units in said one of the filter units. | 12-03-2015 |
| 20150350650 | EFFICIENT SAO SIGNALING - Methods and systems provide efficient sample adaptive offset (SAO) signaling by reducing a number of bits consumed for signaling SAO compared with conventional methods. In an embodiment, a single flag is used if a coding unit to a first scanning direction with respect to a given coding unit is off. In an embodiment, further bits may be saved if some neighboring coding units are not present, i.e. the given coding unit is an edge. For example, a flag may be skipped, e.g., not signaled, if the given coding unit does not have a neighbor. In an embodiment, a syntax element, one or more flags may signal whether SAO filtering is performed in a coding unit. Based on the syntax element, a merge flag may be skipped to save bits. In an embodiment, SAO syntax may be signaled at a slice level. | 12-03-2015 |
| 20150350652 | CONTENT AWARE SCHEDULING IN A HEVC DECODER OPERATING ON A MULTI-CORE PROCESSOR PLATFORM - A method is provided for decoding an encoded video stream on a processor having a plurality of processing cores includes receiving and examining a video stream to identify any macroscopic constructs present therein that support parallel processing. Decoding of the video stream is divided into a plurality of decoding functions. The plurality of decoding functions is scheduled for decoding the video stream in a dynamic manner based on availability of any macroscopic constructs that have been identified and then based on a number of bytes used to encode each block into which each picture of the video stream is partitioned. Each of the decoding functions is dispatched to the plurality of processing cores in accordance with the scheduling. | 12-03-2015 |
| 20150350653 | IMAGE COMPRESSION BASED ON DEVICE ORIENTATION AND LOCATION INFORMATION - An encoding system may include a video source that provides video data to be coded, a video coder, a transmitter, and a controller to manage operation of the system. The controller may control the video coder to code and compress the image information from the video source into video data, based upon one or more motion prediction parameters. The transmitter may transmit the video data. A decoding system may decode the video data based upon the motion prediction parameters. | 12-03-2015 |
| 20150350656 | DYNAMIC VIDEO CORE CLOCK AND VOLTAGE SCALING - Disclosed are systems and methods for dynamically scaling a clock and/or voltage of a video core. The method may include buffering video frames in an input buffer queue and encoding the video frames from the input buffer queue with a video encoder to generate encoded video frames. An input buffer queue is monitored to generate an indication of a fullness of the buffer queue and a high input-threshold level is established for the input buffer queue and a low input-threshold level for the input buffer queue. A clock frequency of the video encoder is increased in response to the indication of the fullness reaching the high input-threshold for the buffer queue and the clock frequency of the video decoder is decreased in response to the indication of the fullness reaching the low input-threshold for the buffer queue. | 12-03-2015 |
| 20150350661 | HIGH PRECISION UP-SAMPLING IN SCALABLE CODING OF HIGH BIT-DEPTH VIDEO - The precision of up-sampling operations in a layered coding system is preserved when operating on video data with high bit-depth. In response to bit-depth requirements of the video coding or decoding system, scaling and rounding parameters are determined for a separable up-scaling filter. Input data are first filtered across a first spatial direction using a first rounding parameter to generate first up-sampled data. First intermediate data are generated by scaling the first up-sampled data using a first shift parameter. The intermediate data are then filtered across a second spatial direction using a second rounding parameter to generate second up-sampled data. Second intermediate data are generated by scaling the second up-sampled data using a second shift parameter. Final up-sampled data may be generated by clipping the second intermediate data. | 12-03-2015 |
| 20150350662 | On Reference Layer and Scaled Reference Layer Offset Parameters for Inter-Layer Prediction in Scalable Video Coding - A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). In order to provide better alignment between layers, it is proposed that reference layer offset adjustment parameters be signaled. | 12-03-2015 |
| 20150358621 | CONTEXT DETERMINATION FOR ENTROPY CODING OF RUN-LENGTH ENCODED TRANSFORM COEFFICIENTS - Methods and devices for encoding and decoding video using mode-dependent context determination in the case of level-run pair coding of transform coefficients are described. Intra-coding modes may be grouped into classes and each class may be associated with a partitioning of a coefficient group into regions. The region in which a coefficient falls determines, in part, the context selected for encoding bins associated with that coefficient, including a level, if the coefficient is non-zero, and a run if the coefficient correspond to the bin of a binarized run value. | 12-10-2015 |
| 20150358622 | Video Encoding for Real-Time Streaming Based on Audio Analysis - Technologies are generally described for video encoding for real-time streaming based on audio analysis. In one example, a method includes analyzing, by a system comprising a processor, audio data representative of audio content associated with a video comprising video frames. The method also includes selecting a set of the video frames based on a determination that each video frame of the set of the video frames satisfies a defined condition associated with the audio content. Further, the method includes video encoding at least one video frame of the set of the video frames as an intra frame based on the audio analysis. | 12-10-2015 |
| 20150358623 | Method for encoding and decoding at picture layer and slice layer, coder and decoder - Disclosed are methods for coding and decoding at picture layer and slice layer, and corresponding coder and decoder. The method comprises: coder selecting, according to network transmission state and video characteristic, different constrained loop filter (CLF) and/or constrained intra-prediction (CIP) control modes for one of the following three objects: 1: different video sequences; 2: pictures in different periods in the same video sequence; 3: different slices in the same picture; according to the selected CLF and/or CIP control mode, coding CLF and/or CIP control flag bits in picture layer parameter set and slice layer parameter set; and a decoder parsing slice layer bitstream containing header information, picture layer parameter set and/or slice layer parameter set, and according to the obtained CLF and/or CIP control flag bits, decoding picture and slice by using the corresponding CLF and/or CIP control mode. Through the present invention, a desirable tradeoff can be achieved between coding efficiency and error resilience performance. | 12-10-2015 |
| 20150358629 | METHOD AND APPARATUS FOR CODING MULTILAYER VIDEO, METHOD AND APPARATUS FOR DECODING MULTILAYER VIDEO - Provided are a method and apparatus for decoding a multi-layer video, and a method and apparatus for encoding a multi-layer video. The method includes obtaining a NAL unit including encoding information and type information of a first layer picture and identifying a type of the first layer picture, obtaining a NAL unit including encoding information and type information of a second layer picture and identifying a type of the second layer picture that is set to be the same as the type of the first layer picture having a same POC as the second layer picture, and decoding the first layer picture and the second layer picture based on the identified first layer picture type and the identified second layer picture type. | 12-10-2015 |
| 20150358645 | ENTROPY CODING TECHNIQUES FOR DISPLAY STREAM COMPRESSION (DSC) - Entropy coding techniques for display stream compression (DSC) are disclosed. In one aspect, a method of entropy coding video data includes partitioning a block of the video data into a plurality of groups of samples based at least in part on a coding mode of the block. The method further includes entropy coding the block via performing a group-wise skip on at least one of the groups in response to all of the samples in the at least one group being equal to a predetermined value. | 12-10-2015 |
| 20150365664 | Multi-Level Video Processing Within A Vehicular Communication Network - A system for performing multi-level video processing within a vehicle includes a pre-processing module for determining an encoding mode and enabling one or more levels of encoding based on the encoding mode. The pre-processing module further receives a video stream from a camera attached to the vehicle via a vehicular communication network and encodes the video stream based on the encoding mode to produce a packet stream output. The system further includes a video decoder for receiving the packet stream output and decoding the packet stream output in accordance with the encoding mode to produce a decoded video output. | 12-17-2015 |
| 20150365665 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes: performing Sample SAO processing on Y signal, Cb signal, and Cr signal which are included in a target block; performing arithmetic coding on a first flag indicating whether or not an SAO parameter, which indicates details of the SAO processing, of the target block is identical to an SAO parameter for a left neighboring block immediately left of the target block; and performing arithmetic coding on the SAO parameter for the target block, when the SAO parameter for the target block is different from the SAO parameter for the left neighboring block. In the arithmetic coding on the first flag, a single context is used to perform the arithmetic coding on the first flag for the luminance signal, the chrominance Cb signal, and the chrominance Cr signal. | 12-17-2015 |
| 20150365669 | SIGNALING SIGNED BAND OFFSET VALUES FOR SAMPLE ADAPTIVE OFFSET (SAO) FILTERING IN VIDEO CODING - A method for signaling sample adaptive offset (SAO) band offset syntax elements in a video encoder is provided that includes receiving a plurality of band offset syntax elements, entropy encoding an absolute value of a magnitude of each band offset syntax element in a compressed video bit stream, and entropy encoding a sign of each non-zero band offset syntax element in the compressed video bit stream following the absolute values of the magnitudes. | 12-17-2015 |
| 20150365670 | ENCODING METHOD, DECODING METHOD, ENCODING/DECODING SYSTEM, ENCODER, AND DECODER - An encoding, a decoding method, a system for encoding and decoding, an encoder, and a decoder are provided. The encoding method includes the following. In a palette mode, if colors of pixels of a coding unit block are all represented by one or more major colors of the coding unit block, a flag is set as a first state value, and if the color of at least one pixel of the coding unit block is not represented by the one or more major colors of the coding unit block, the flag is set as a second state value. The encoding method further includes establishing a palette table corresponding to the coding unit block according to a state value of the flag and the one or more major colors. | 12-17-2015 |
| 20150365676 | METHOD AND DEVICE FOR GENERATING PARAMETER SET FOR IMAGE ENCODING/DECODING - A method of generating a parameter set includes obtaining common information commonly inserted into at least two lower parameter sets referring to the same upper parameter set; determining whether the common information is to be added to at least one among the upper parameter set and the at least two lower parameter sets; and adding the common information to at least one among the upper parameter set and the at least two lower parameter sets, based on a result of determining whether the common information is to be added to at least one among the upper parameter set and the at least two lower parameter sets. | 12-17-2015 |
| 20150365677 | MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE DECODING DEVICE - When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly. | 12-17-2015 |
| 20150365678 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 12-17-2015 |
| 20150365679 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 12-17-2015 |
| 20150365680 | Method and Apparatus for Line Buffer Reduction for Video Processing - A method and apparatus of line buffer reduction for context adaptive entropy processing are disclosed. The context formation for context adaptive entropy processing depends on block information associated with one or more neighboring blocks. When a first neighboring block is on an upper side of a horizontal region boundary or on a left side of a vertical region boundary of the region, the block information is replaced by replacement block information to reduce or remove line buffer requirement for storing the block information of neighboring blocks on the other side of the region boundaries from the current block. The context adaptive entropy processing is CABAC encoding, CABAC decoding, CAVLC encoding, or CAVLC decoding. | 12-17-2015 |
| 20150365681 | METHOD OF ENCODING AND DECODING VIDEO STREAM FOR IMAGE COMPRESSION - The present invention is related to a method of the video data encoding and decoding, which plays an important role in digital video compression and decompression, specifically in encoding and decoding the video stream. The present invention significantly reduces the computing times compared to its counterparts in the field of video compression. | 12-17-2015 |
| 20150365682 | AUTOGRESSIVE PIXEL PREDICTION IN THE NEIGHBORHOOD OF IMAGE BORDERS - The invention refers to a method for coding digital image data (I), the data comprising one or more arrays of pixels (p | 12-17-2015 |
| 20150365686 | IMAGE ENCODING/DECODING METHOD AND DEVICE - Disclosed are an image encoding/decoding method and device supporting a plurality of layers. The image decoding method supporting the plurality of layers comprises the steps of; receiving a bitstream comprising the plurality of layers; and decoding the bitstream so as to acquire maximum number information about sublayers with respect to each of the plurality of layers. | 12-17-2015 |
| 20150373334 | BLOCK VECTOR CODING FOR INTRA BLOCK COPYING - An example method for decoding video data includes receiving syntax elements (SEs) for a component of a block vector that represents a displacement between a current block of video data and a predictor block of video data; decoding the SEs to determine a value of the component by at least: decoding a first SE to determine whether or not an absolute value of the component (AbsVal | 12-24-2015 |
| 20150373335 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - The image coding method includes: determining a context in a current block in the image, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “no_residual_data_flag”, (vi) “intra_chroma_pred_mode”, (vii) “cbf_luma”, and (viii) “cbf_cb” or “cbf_cr”. | 12-24-2015 |
| 20150373336 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - The image coding method includes: determining a context for a current block to be processed, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is one of “mvd_l | 12-24-2015 |
| 20150373341 | Techniques for Interactive Region-Based Scalability - Techniques are provided herein for optimizing encoding and decoding operations for video data streams. An encoded video data stream is received, and select image segments of the encoded video data stream are identified. Each of the select image segments is an independently decodable portion of the encoded video data stream. Enhanced layer decoding operations are performed on each of the select image segments of the encoded video data stream to obtain an enhanced decoded output for the select image segments. Base layer decoding operations on each of the select image segments of the encoded video data stream are performed to obtain a base layer decoded output for the select image segments. | 12-24-2015 |
| 20150373342 | FULL PICTURE ORDER COUNT RESET FOR MULTI-LAYER CODECS - An apparatus for coding video information according to certain aspects includes a memory unit configured to store video information associated with a plurality of layers and a processor. The processor is configured to obtain information associated with a current access unit (AU) to be coded, the current AU containing pictures from one or more layers of the plurality of layers. The processor is also configured to reset a picture order count (POC) of a layer included in the current AU via (1) resetting only a most significant bit (MSB) of the POC or (2) resetting both the MSB of the POC and a least significant (LSB) of the POC. The processor is further configured to, for pictures in one or more Ails subsequent to the current AU in decoding order: set a value of a first flag indicative whether a reset of the POC is a full reset. | 12-24-2015 |
| 20150373344 | SYSTEMS AND METHODS FOR CONSTRAINING REPRESENTATION FORMAT PARAMETERS FOR A PARAMETER SET - Techniques and systems are provided for encoding video data. For example, a method of encoding video data includes generating an encoded video bitstream comprising multiple layers. The encoded video bitstream includes one or more sequence parameter sets and a video parameter set. The method further includes generating, according to a constraint, one or more representation format parameters for a sequence parameter set assigned to a base layer of the encoded video bitstream. The constraint limits values of the one or more representation format parameters in the sequence parameter set to be less than or equal to values of corresponding representation format parameters that are assigned to the base layer in the video parameter set. | 12-24-2015 |
| 20150373346 | CONFORMANCE AND INOPERABILITY IMPROVEMENTS IN MULTI-LAYER VIDEO CODING - This disclosure provides devices and methods for processing video data. The method can include extracting an output operation point from received video data. If the output operation point corresponds to one of an entire bitstream and a temporal subset of the entire bitstream with only the base layer as output, the method can include performing a first bitstream conformance test. If the output operation point corresponds to one of a layer set specified by a base video parameter set (VPS) of an active VPS and a temporal subset of the layer set with only the base layer to be output, the method can include performing a second bitstream conformance test. If the output operation point corresponds to one of an output layer set (OLS) specified by a VPS extension of the active VPS and a temporal subset of the OLS, the method can include performing a third bitstream conformance test. | 12-24-2015 |
| 20150373347 | SIGNALING HRD PARAMETERS FOR BITSTREAM PARTITIONS - In one example, a device for coding (e.g., encoding or decoding) video data includes a memory configured to store video data, and a video coder configured to code a value for a syntax element that indicates a number of sub-layers of a bitstream for which hypothetical reference decoder (HRD) parameters are coded, wherein the value indicates that the number of sub-layers for which HRD parameters are coded is less than a maximum number of sub-layers indicated by a video parameter set (VPS) of the bitstream, code HRD parameters for the number of sub-layers as indicated by the value for the syntax element, and process the bitstream using the HRD parameters. | 12-24-2015 |
| 20150373348 | SYSTEMS AND METHODS FOR SELECTIVELY PERFORMING A BITSTREAM CONFORMANCE CHECK - Techniques and systems are provided for encoding video data. For example, a method of encoding video data includes generating an encoded video bitstream comprising multiple layers. The encoded video bitstream including a parameter set defining parameters of the encoded video bitstream. The method further includes determining one or more parameters of the parameter set that include information describing a first sub-bitstream of the encoded video bitstream that includes one or more layers with video data and information describing a second sub-bitstream of the encoded video bitstream that includes one or more layers with no video data. The method further includes performing a bitstream conformance check on the first sub-bitstream or the second sub-bitstream based on whether at least one layer of the first sub-bitstream or the second sub-bitstream includes video data. | 12-24-2015 |
| 20150373349 | CROSS-COMPONENT PREDICTION IN VIDEO CODING - A system and method for decoding video. A first syntax element for a block of video data is received, a value of the first syntax element indicating one of a plurality of mapping functions to be used to determine a magnitude of a scaling parameter for cross-component prediction. A second syntax element for the block of video data is received, a value of the second syntax element corresponding to the magnitude of the scaling parameter, wherein receiving the second syntax element includes decoding the value of the second syntax element with a specific binarization method. The magnitude of the scaling parameter is determined using the one of the plurality of mapping functions indicated by the first syntax element and the value of the second syntax element. Cross-component prediction is performed for at least one component of the block video data using the determined magnitude of the scaling parameter. | 12-24-2015 |
| 20150373354 | METHOD AND DEVICE FOR ENCODING/DECODING IMAGE SO THAT IMAGE IS COMPATIBLE WITH MULTIPLE CODECS - An image decoding method including: determining whether image data of a base layer, which is encoded according to a first codec, is decodable according to a second codec; and decoding the image data of the base layer based on a result of the determining, wherein the image data includes image data of an enhancement layer, which is encoded according to the first codec. | 12-24-2015 |
| 20150373370 | INTRA BLOCK COPY BLOCK VECTOR SIGNALING FOR VIDEO CODING - This disclosure describes techniques for coding video data according to an intra Block Copy (BC) coding mode. A block vector difference that identifies a prediction block may be represented by a plurality of syntax elements, which may be encoded and decoded. This disclosure proposes various techniques whereby a video encoder may conditionally signal syntax elements representing the absolute value and/or sign of the components of the block vector difference. Likewise, a video decoder may be configured to infer the values of the syntax elements representing the absolute value and/or sign of the components of the block vector difference when such syntax elements are not signaled. | 12-24-2015 |
| 20150379997 | BIT RATE MODIFICATION BASED ON AN AMBIENT INTERFERENCE LEVEL - For bit rate adjustment based on ambient interference levels, an apparatus determines an ambient interference level of ambient interference. In addition, the apparatus modifies a bit rate of a lossy compressed data stream in response to the ambient interference level. | 12-31-2015 |
| 20150381978 | TECHNIQUES FOR PARALLEL VIDEO TRANSCODING - Various embodiments are directed to techniques for dividing compressed video data into portions for load balancing or redundancy among multiple video transcoders. A device includes an analysis component to analyze NAL units of compressed video data representing a motion video to identify a GOP refresh, and to compare a period of time represented by frames of the motion video following the GOP refresh to a maximum; a division component to divide the compressed video data at a first point coincident with the GOP refresh to define a start of a compressed video portion, and at a second point to define an end of the compressed video portion to include frames of the motion video representing a shorter period of time between the first and second points than the maximum; and an assignment component to assign the compressed video portion to a transcoding device. Other embodiments are described and claimed. | 12-31-2015 |
| 20150381980 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND PROGRAM - An image processing system, method and device for processing an image signal. The image processing system, method and device receive an operating mode signal indicative of a determined operating mode associated with resource efficiency, and control a depth of block division for a block setting process based on the determined operating mode indicated by the operating mode signal. | 12-31-2015 |
| 20150381987 | DRAWING SYSTEM, INFORMATION PROCESSING APPARATUS FOR DRAWING, AND DRAWING CONTROL METHOD - A drawing system includes an information processing apparatus which includes a generation unit for generating video data for a frequently changed region whose change frequency in an image exceeds a predetermined threshold, and generate still image data for the video data, and a first communication unit for transmitting the video and still image data to a terminal apparatus; and the terminal apparatus which includes a second communication unit for receiving the video and still image data from the information processing apparatus, a decoder unit for decoding the video and still image data, and a drawing unit for drawing a the decoded still image data when decoding of the video data is not completed by drawing timing, and to switch the drawing of the decoded still image data to drawing of a decoded video data when the decoding of the video data catches up with the drawing timing. | 12-31-2015 |
| 20150381989 | Iterative Video Optimization for Data Transfer and Viewing - Computer-implemented techniques that leverage available CPU resources to incrementally improve quality and compression of media for faster transfer over data networks for improved viewing are described. | 12-31-2015 |
| 20150381990 | Display Interface Bandwidth Modulation - Bandwidth modulation may enable most of the display data-path to operate at a lower performance level to reduce power consumption by using compression as part of the display engine capability. Use of compression may afford a bit rate reduction and/or lane width reduction on the display interface to support high resolution display. With the bit rate and/or lane reduction and selective use of a refresh rate reduction, this technique can be used to lower the power consumption of the display data-path. | 12-31-2015 |
| 20150381991 | MULTI-LAYER VIDEO CODING - A device for processing video data includes a memory configured to store at least a portion of a bitstream of multi-layer video data and one or more processors configured to generate a first video coding layer (VCL) network abstraction layer (NAL) unit for a first picture of an access unit, the first VCL NAL unit comprising a first slice type; generate a second VCL NAL unit for a second picture of the access unit, the second VCL NAL unit comprising a second slice type; and generate an access unit delimiter (AUD) NAL unit based on the first and second slice types. | 12-31-2015 |
| 20150381996 | MULTI-LAYER VIDEO CODING - A device for processing video data includes a memory configured to store at least a portion of a multi-layer bitstream of video data; and one or more processors configured to receive the portion of the multi-layer bitstream, the multi-layer bitstream comprising a plurality of layers, the plurality of layers comprising a non-independently decodable non-base layer (non-INBL) and an independently decodable non-base layer (INBL); receive a video parameter set (VPS) associated with the coded video data, the VPS comprising first representation format parameters; receive a sequence parameter set (SPS) associated with the INBL, the SPS comprising second representation format parameters; process the non-INBL based on the first representation format parameters; and process the INBL based on the second representation format parameters. | 12-31-2015 |
| 20150381997 | MULTI-LAYER VIDEO CODING - A device for decoding video data includes a memory configured to store at least a portion of a bitstream of multi-layer video data and one or more processors configured to receive a first access unit delimiter (AUD) network abstraction layer (NAL) unit for a first access unit, wherein a layer identifier for the first AUD NAL unit is equal to zero; receive a second AUD NAL unit for the first access unit, wherein a layer identifier for the second AUD NAL unit is greater than zero; and decode the first access unit. | 12-31-2015 |
| 20150382003 | DATA ENCODING AND DECODING APPARATUS, METHOD AND STORAGE MEDIUM - A video data decoding apparatus is configured to detect a control flag associated with at least a part of an encoded image for decoding, in which in a lossless mode of operation, a first control flag state enables sample-based angular intra-prediction but disables edge filtering of prediction samples, and a second control flag state disables sample-based angular intra prediction but enables edge filtering of prediction samples; and in a lossy mode of operation, the first control flag state enables residual differential pulse code modulation coding and enables edge filtering of prediction samples, and the second control flag state disables residual differential pulse code modulation coding but enables edge filtering of prediction samples. | 12-31-2015 |
| 20150382026 | Compressive Sense Imaging - Systems and methods for compressive sense imaging are provided. In one aspect, incident light reflecting from an object is received via an aperture array and a sensor and intermediate compressive measurements are generated using compressive sequence matrices that are determined based on the properties of the aperture array and the sensor. The intermediate compressive measurements are further processed to generate compressive measurements representing the compressed image of the object. An uncompressed image of the object is generated from the compressive measurements using a determined reconstruction matrix that is different from the sequence matrices used to acquire the intermediate compressive measurements. | 12-31-2015 |
| 20160007024 | THERMAL AND POWER MANAGEMENT WITH VIDEO CODING - In an example, a method includes encoding video data at a first video quality using an encoding parameter, and determining an operating characteristic of one or more components of an electronic device configured to record the video data. The method also includes adjusting the encoding parameter based at least in part on the determined operating characteristic and while maintaining the first video quality, and encoding the video data at the first video quality using the adjusted encoding parameter. | 01-07-2016 |
| 20160007032 | DEVICE AND METHOD FOR SCALABLE VIDEO ENCODING CONSIDERING MEMORY BANDWIDTH AND COMPUTATIONAL QUANTITY, AND DEVICE AND METHOD FOR SCALABLE VIDEO DECODING - Provided are scalable video encoding and decoding methods for optimization of a memory bandwidth and a computational quantity when inter-layer prediction is performed. | 01-07-2016 |
| 20160007033 | DYNAMIC BIT RATE ADAPTATION OVER BANDWIDTH VARYING CONNECTION - Audio and video streams of a media file are transcoded just-in-time by keeping the transcoding process synchronized to a wall clock. The transcoding is initially configured slightly faster than real-time. The transcoded frames are pushed from the transcoder through a variable bandwidth connection as soon as they are transcoded. Transcoding is then monitored periodically to assess the bandwidth that was available during the transmission of a transcoded buffer. Two time intervals are measured: a buffer interval which is the difference in the transcoded buffer timestamps of the previous two transmissions, and a clock interval corresponding to the real time transmission time of the last transcoded buffer. If a significant difference is observed, the transcoder bit rate is adjusted by a factor that is derived from that difference. | 01-07-2016 |
| 20160007036 | METHOD FOR ADAPTIVELY PERFORMING VIDEO DECODING, AND ASSOCIATED ADAPTIVE COMPLEXITY VIDEO DECODER AND ADAPTIVE AUDIO/VIDEO PLAYBACK SYSTEM - A method for adaptively performing video decoding includes: performing decoding complexity management based upon parameter representing processing capability related to the adaptive complexity video decoder, in order to determine whether to reduce decoding complexity of at least one component of a plurality of components within an adaptive complexity video decoder; and selectively reducing decoding complexity of a portion of components within the adaptive complexity video decoder. An associated adaptive complexity video decoder and an associated adaptive audio/video playback system are also provided. In particular, the adaptive complexity video decoder includes a plurality of components and a decoding complexity manager. When needed, the decoding complexity manager delays audio playback of audio information. | 01-07-2016 |
| 20160007046 | ESTIMATING RATE COSTS IN VIDEO ENCODING OPERATIONS USING ENTROPY ENCODING STATISTICS - A component of an entropy encoding stage of a block processing pipeline (e.g., a CABAC encoder) may, for a block of pixels in a video frame, accumulate counts indicating the number of times each of two possible symbols is used in encoding a syntax element bin. An empirical probability for each symbol, an estimated entropy, and an estimated rate cost for encoding the bin may be computed, dependent on the symbol counts. A pipeline stage that precedes the entropy encoding stage may, upon receiving another block of pixels for the video frame, calculate and use the estimated rate cost when making encoding decisions for the other block of pixels based on a cost function that includes a rate cost term. The symbol counts or empirical probabilities may be passed to the earlier pipeline stage or written to a shared memory, from which components of the earlier stage may obtain them. | 01-07-2016 |
| 20160014409 | ENCODING AND DECODING DEVICE AND METHOD USING INTRA PREDICTION | 01-14-2016 |
| 20160014414 | Encoding Method and Apparatus, and Decoding Method and Apparatus for Video System | 01-14-2016 |
| 20160014418 | ADAPTIVE BITRATE STREAMING FOR WIRELESS VIDEO | 01-14-2016 |
| 20160021375 | TRANSPORT STREAM FOR CARRIAGE OF VIDEO CODING EXTENSIONS - A video processing device may obtain, from a descriptor for a program comprising one or more elementary streams, a plurality of profile, tier, level (PTL) syntax element sets. The video processing device may obtain, from the descriptor, a plurality of operation point syntax element sets. For each respective operation point syntax element set of the plurality of operation point syntax element sets, the video processing device may determine, for each respective layer of the respective operation point specified by the respective operation point syntax element set, based on a respective syntax element in the respective operation point syntax element set, which of the PTL syntax element sets specifies the PTL information assigned to the respective layer, the respective operation point having a plurality of layers. | 01-21-2016 |
| 20160029022 | VIDEO PROCESSING APPARATUS WITH ADAPTIVE CODING UNIT SPLITTING/MERGING AND RELATED VIDEO PROCESSING METHOD - A video processing apparatus includes a first processing circuit, a second processing circuit, and a control circuit. The first processing circuit performs a first processing operation. The second processing circuit performs a second processing operation different from the first processing operation. The control circuit generates at least one output coding unit to the second processing circuit according to an input coding unit generated from the first processing circuit, wherein the control circuit checks a size of the input coding unit to selectively split the input coding unit into a plurality of output coding units. | 01-28-2016 |
| 20160029027 | DEVICE AND METHOD FOR PROCESSING IMAGE - An apparatus and a method for applying an independent compression mode for encoding on each data block constituting an image frame in an encoder provided in an image processing device are provided. To that end, at least one data block is encoded based on each of a plurality of specified compression modes, and at least one data block corresponding to each of the plurality of specified compression modes is reconfigured based on at least in part on each of the plurality of specified compression modes. An inter-data difference corresponding to each of the plurality of specified compression modes is determined based on the at least one data block and a data block obtained by reconfiguring the at least one data block, and at least one compression mode is selected from the plurality of specified compression modes based on at least in part on each of the inter-data difference. | 01-28-2016 |
| 20160037161 | VARIABLE LENGTH CODING METHOD AND VARIABLE LENGTH DECODING METHOD - A variable length coding method is comprised of: a coefficient value scanning step in which an RL sequence generation unit, a reordering unit, and a binarization unit scan coefficient values within a block in a predetermined scanning order starting at a higher-frequency component toward a lower-frequency component; and an arithmetic coding step in which an arithmetic coding unit and a table storage unit perform arithmetic coding on the absolute values of the coefficient values according to the scanning order used in the coefficient value scanning step, by switching between probability tables for use, wherein, in the arithmetic coding step, a probability table to be used is switched to another probability table in one direction, when the arithmetic-coded absolute values of the coefficient values include an absolute value exceeding a predetermined threshold value. | 02-04-2016 |
| 20160037162 | VARIABLE LENGTH CODING METHOD AND VARIABLE LENGTH DECODING METHOD - A variable length coding method is comprised of: a coefficient value scanning step in which an RL sequence generation unit, a reordering unit, and a binarization unit scan coefficient values within a block in a predetermined scanning order starting at a higher-frequency component toward a lower-frequency component; and an arithmetic coding step in which an arithmetic coding unit and a table storage unit perform arithmetic coding on the absolute values of the coefficient values according to the scanning order used in the coefficient value scanning step, by switching between probability tables for use, wherein, in the arithmetic coding step, a probability table to be used is switched to another probability table in one direction, when the arithmetic-coded absolute values of the coefficient values include an absolute value exceeding a predetermined threshold value. | 02-04-2016 |
| 20160037164 | PALETTE MODE ENCODING AND DECODING DESIGN - In an example, a method of processing video data may include inferring a pixel scan order for a first palette mode encoded block of video data without receiving a block-level syntax element having a value representative of the pixel scan order for the first palette mode encoded block. The method may include decoding the first palette mode encoded block of video data using the inferred pixel scan order. The method may include receiving a block-level syntax element having a value representative of a pixel scan order for a second palette mode encoded block of video data. The method may include determining the pixel scan order for the second palette mode encoded block of video data based on the received block-level syntax element. The method may include decoding the second palette mode encoded block of video data using the determined pixel scan order. | 02-04-2016 |
| 20160044308 | METHOD FOR VIDEO CODING WITH SPATIAL PREDICTION MODE FOR MULTI-MODE VIDEO CODING - A method and apparatus for video coding with spatial prediction mode for multi-mode video coding is disclosed. In one aspect, the method includes coding a slice of video data, the slice including a plurality of pixels organized into a first line and a plurality of non-first lines. The coding of the slice further includes coding a current pixel of the first line in a spatial prediction mode using a previous pixel of the first line as a predictor and coding another pixel of a non-first line in a coding mode other than the spatial prediction mode. | 02-11-2016 |
| 20160044311 | IMAGE ENCODING APPARATUS, IMAGE ENCODING METHOD, AND RECORDING MEDIUM - Provided is an image encoding apparatus capable of encoding a region important to a user with high quality. An update interval index calculation unit calculates an update interval index representing an index having a long update interval in an entire update tile overlapping the update region for each update region. An importance region specification unit specifies an important region, from each update region by using the update interval index. An quality control unit allocates a code amount, which is larger than a result obtained by dividing the total target code amount per one frame proportionally according to a ratio of an area of an entire important region with respect to an area of an entire update region, as a target code amount of the entire important region and specifies a quality value of the entire important region on the basis of the target code amount. | 02-11-2016 |
| 20160044314 | SYSTEM AND METHOD FOR REUSING TRANSFORM STRUCTURE FOR MULTI-PARTITION TRANSFORM - An apparatus configured to decode a block of video data in a coded bitstream includes a memory and a processor in communication with the memory. The memory is configured to store data associated with the block of video data in the coded bitstream. The processor is configured to: determine a transform partition type of the block, the block associated with transform coefficients determined via applying one or more transform functions on a plurality of pixel values associated with the block; determine, based on the transform partition type, an order in which the transform coefficients are to be inputted to an inverse transform function corresponding to the one or more transform functions; obtain output values via inputting the transform coefficients to the inverse transform function in the determined order; and decode the block of video data in the coded bitstream based on the output values. | 02-11-2016 |
| 20160044315 | SYSTEM AND METHOD FOR ADAPTIVELY COMPENSATING DISTORTION CAUSED BY VIDEO COMPRESSION - The present invention provides a system and method for adaptively compensating distortion caused by video compression, the method first conducts an edge texture detection and block boundary detection to an image, classifies the area where the pixels to be processed is located to determine whether the pixel is located at a ringing artifact prone area or near the block boundary with blocking artifact. Next, according to the area of the pixel to be processed and the degree of distortion, the present invention adaptively compensate the distortion using different filtering strategies, so as to improve image effect of low bit-rate transmission at the display end, so that a real time requirement that playing at a high-definition, and ultra high-definition display is satisfied. | 02-11-2016 |
| 20160050425 | System and Method for Transcoding Data - A method for transcoding data comprises receiving an input stream of data formatted according to a USB standard, the input stream is partitioned into a sequence of blocks having a fixed length. At least one input block of the input stream comprises one or more data symbols and one or more control symbols, the one or more control symbols include one or more general control symbols. The method also includes transcoding the at least one input block to generate at least one output block comprising a synchronization block and a control/data block. The control/data block comprises the one or more data symbols of the at least one input block, a representation of the one or more general control symbols of the at least one input block, and a plurality of indicators indicating locations of the one or more data symbols and control symbols in the at least one input block. | 02-18-2016 |
| 20160057416 | VIDEO ENHANCEMENTS FOR LIVE SHARING OF MEDICAL IMAGES - In a telemedicine application there is live sharing of a video stream of medical images from a first site to a second site as well as a two-way conferencing capability. Live streaming of medical images in a live interactive session imposes many limitations on the video streaming process not found in conventional video conferencing. The network conditions are heterogeneous and low latency is required to support: 1) live streaming of medical images to a remote site and 2) supporting two-way conferencing in which a doctor or clinician at the remote site can provide real-time analysis or guidance on how to adjust a location of an imaging device. A suite of video enhancements is disclosed to improve the capability to sustain live video streaming of medical images in a telemedicine environment including a two-way conference between doctors or clinicians. | 02-25-2016 |
| 20160065957 | Overlapped Rate Control for Video Splicing Applications - Rate control techniques are provided for encoding an input video sequence into a compressed coded bitstream with multiple coding passes. The final coding pass may comprise final splices with non-overlapping frames that do not extend into neighboring final splices. A final splice in the final coding pass may correspond to at least one non-final splice in a non-final coding pass. A non-final splice may have overlapping frames that extend into neighboring final splices in the final coding pass. The overlapping frames in the non-final splice may be used to derive complexity information about the neighboring final splices. The complexity information about the neighboring final splices, as derived from the overlapping frames, may be used to allocate or improve rate control related budgets in encoding the final splice into the compressed coded bitstream in the final coding pass. | 03-03-2016 |
| 20160065966 | METHODS AND APPARATUS FOR USING SYNTAX FOR THE CODED_BLOCK_FLAG SYNTAX ELEMENT AND THE CODED_BLOCK_PATTERN SYNTAX ELEMENT FOR THE CAVLC 4:4:4 INTRA, HIGH 4:4:4 INTRA, AND HIGH 4:4:4 PREDICTIVE PROFILES IN MPEG-4 AVC HIGH LEVEL CODING - There are provided methods and apparatus for using syntax for the coded_block_flag syntax element for the CAVLC 4:4:4 Intra, High 4:4:4 Intra, and High 4:4:4 Predictive profiles in MPEG-4 AVC high level coding. An apparatus includes an encoder ( | 03-03-2016 |
| 20160065969 | VIDEO ENCODER WITH CONTEXT SWITCHING - A context switching method for video encoders that enables higher priority video streams to interrupt lower priority video streams. A high priority frame may be received for processing while another frame is being processed. The pipeline may be signaled to perform a context stop for the current frame. The pipeline stops processing the current frame at an appropriate place, and propagates the stop through the stages of the pipeline and to a transcoder through DMA. The stopping location is recorded. The video encoder may then process the higher-priority frame. When done, a context restart is performed and the pipeline resumes processing the lower-priority frame beginning at the recorded location. The transcoder may process data for the interrupted frame while the higher-priority frame is being processed in the pipeline, and similarly the pipeline may begin processing the lower-priority frame after the context restart while the transcoder completes processing the higher-priority frame. | 03-03-2016 |
| 20160065978 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM - An image processing apparatus, which is configured to code a frame included in a moving image with use of a temporal hierarchal layer, includes an acquisition unit configured to acquire information regarding the temporal hierarchal layer corresponding to the frame as a coding target, and a coding unit configured to code the frame of the coding target with use of a first coding parameter that causes a bit rate after the frame is coded to be equal to or lower than a first bit rate corresponding to the temporal hierarchal layer acquired by the acquisition unit, or a second coding parameter that causes the bit rate after the frame is coded to match a second bit rate higher than the first bit rate, based on the information regarding the temporal hierarchal layer acquired by the acquisition unit. | 03-03-2016 |
| 20160073106 | TECHNIQUES FOR ADAPTIVE VIDEO STREAMING - In a video coding system, a common video sequence is coded multiple times to yield respective instances of coded video data. Each instance may be coded according to a set coding parameters derived from a target bit rate of a respective tier of service. Each tier may be coded according to a constraint that limits a maximum coding rate of the tier to be less than a target bit rate of another predetermined tier of service. Having been coded according to the constraint facilitates dynamic switching among tiers by a requesting client device processing resources or communication bandwidth changes. Improved coding systems to switch among different coding streams may increase quality of video streamed while minimizing transmission and storage size of such content. | 03-10-2016 |
| 20160073110 | OBJECT-BASED ADAPTIVE BRIGHTNESS COMPENSATION METHOD AND APPARATUS - A brightness compensation method, according to one embodiment of the present invention, comprises the steps of: receiving a bitstream including encoded images; performing prediction encoding for the bitstream according to an intra mode or an inter mode; and compensating brightness of the current picture to be encoded according to the previous encoded prediction picture, wherein the step for compensating brightness includes a step for adaptively compensating the current picture to be encoded according to pixel units on the basis of the depth information included in the bitstream. | 03-10-2016 |
| 20160073119 | TRANSMITTING METHOD AND RECEIVING METHOD - A transmitting method for transmitting encoded data obtained by hierarchically encoding a video image includes: generating an encoded stream that includes time information and the encoded data, the time information indicating a time at which decoding or displaying processing of the encoded data is performed, and transmitting the generated encoded stream, wherein the encoded data includes a plurality of sets each including a plurality of access units and the time information includes first time information which indicates a time at which the processing performed on a first access unit of the first set is performed and which is based on a reference clock, and second time information used to specify a time at which the processing performed on a second access unit of the second set is performed and which is based on the reference clock. | 03-10-2016 |
| 20160073120 | ADAPTIVE BIT RATE CO-OPERATIVE TRANSCODING - Methods, systems, and computer readable media can be operable to encode an input video stream into one or more output streams by using information obtained from a first transcoding of the input video stream. During a first encoding of an input video stream, pre-processing, motion estimation, mode decision, and other information can be collected or buffered and can be re-used to encode the input video stream to multiple output video streams at different bitrates, resolutions, and/or frame rates. Motion estimation, macroblock mode decision, and pre-processing data can be manipulated and re-used during the encoding of an input video stream at various resolutions. Data can be re-computed at a new resolution or bitrate to improve visual quality. | 03-10-2016 |
| 20160080738 | METHOD AND APPARATUS FOR ENCODING VIDEO AND METHOD AND APPARATUS FOR DECODING VIDEO BY CONSIDERING SKIP AND SPLIT ORDER - A method of encoding a video includes: splitting a picture into a maximum coding unit; for the maximum coding unit, determining coding units having a tree structure including coding units of coded depths and determining encoding modes for the coding units of the coded depths by performing encoding based on coding units according to depths, the coding units according to depths obtained by hierarchically splitting the maximum coding unit as a depth deepens; and outputting information about a maximum coding unit size and, for the maximum coding unit, information indicating an order of split information and skip mode information which is selectively determined for the coding units according to depths, information about the encoding modes for the coding units of the coded depths including the split information and the skip mode information which are arranged according to the order, and encoded video data. | 03-17-2016 |
| 20160080740 | SIGNALING SIGNED BAND OFFSET VALUES FOR SAMPLE ADAPTIVE OFFSET (SAO) FILTERING IN VIDEO CODING - A method for signaling sample adaptive offset (SAO) band offset syntax elements in a video encoder is provided that includes receiving a plurality of band offset syntax elements, entropy encoding an absolute value of a magnitude of each band offset syntax element in a compressed video bit stream, and entropy encoding a sign of each non-zero band offset syntax element in the compressed video bit stream following the absolute values of the magnitudes. | 03-17-2016 |
| 20160080749 | TRANSFORM COEFFICIENT CODING FOR CONTEXT-ADAPTIVE BINARY ENTROPY CODING OF VIDEO - Methods and devices for encoding and decoding video are described that partition transform blocks into coefficient groups. The coefficients within non-zero coefficients are run-length coded in a reverse scan order within the group. Prior to coefficient coding, data is encoded indicating which coefficient group in group scan order is the last to contain a non-zero coefficient. Then data is encoded indicating the position within that last non-zero coefficient group of the last non-zero coefficient in scan order inside the coefficient group. Thus the decoder is able to decode run-length data knowing the positions of the coefficients and eliminating the need for end-of-block flags. | 03-17-2016 |
| 20160080751 | INTER-COMPONENT DE-CORRELATION FOR VIDEO CODING - Cross-component prediction (CCP) and adaptive color transform (ACT) may be performed concurrently in a video coding system. CCP and ACT may be enabled/disabled at the same level (e.g. at the transform unit level) via an indicator signaled in the bitstream such as the ACT enable indicator for the CU. Inverse CCP and ACT may be operated at the same level (e.g. at the transform unit level). Prediction residuals may be converted to original color space without waiting for reconstruction of luma and chroma residuals of an entire prediction unit or coding unit. CCP and ACT transforms may be combined into one process to reduce encoding/decoding latency. Differences in dynamic ranges of color components may be compensated by variable dynamic range adjustments. Differences in bit depths between luma and chroma components may be compensated by selectively disabling the ACT coding tool, scaling a component output of the CCP, adjusting a quantization parameters (QPs) and/or shifting a component output of an inverse transform of the video coding system. | 03-17-2016 |
| 20160080776 | METHOD AND APPARATUS FOR ADAPTIVELY PROCESSING VIDEO SAMPLES IN A VIDEO SIGNAL FRAME - A method and apparatus for adaptively processing video samples in a video signal frame, the video samples being arranged in a Largest Coding Unit. The method comprises extracting a plurality of video samples from the Largest Coding Unit, calculating a correction offset for a first video sample of the extracted plurality of video samples upon the basis of a first value of the first video sample and a second value of a second video sample of the extracted plurality of video samples, and weighting the first video sample with the correction offset. | 03-17-2016 |
| 20160088051 | FRAME PRIORITY SYSTEM - In one embodiment, a system for setting frame priority according to priority levels includes a video encoder to encode a first video frame of a live video stream yielding an encoded first video frame having a first priority level, and a processor to read, from a memory, an estimate of a time delay, the time delay being a time for data in the live video stream to be transferred from a first device to a second device, and determine if the estimate of the time delay exceeds a pre-defined delay, and wherein if the estimate of the time delay exceeds the pre-defined delay, the video encoder is operative to encode a second video frame with a higher priority level than the first priority level, the second video frame being a most recent video frame to be presented from the live video stream for encoding after the first video frame. Related apparatus and methods are also described. | 03-24-2016 |
| 20160088295 | VIDEO CODING DEVICE, VIDEO DECODING DEVICE, VIDEO SYSTEM, VIDEO CODING METHOD, VIDEO DECODING METHOD, AND COMPUTER READABLE STORAGE MEDIUM - A video coding device that allows adaptive filtering within a coding loop and allows filter design in units of a pixel or in units of a small area that is constituted by a plurality of pixels, includes: a pixel value feature amount calculation unit configured to derive a feature amount of pixel values of a decoded image in the pixel units or the small area units; a threshold processing and sorting unit configured to compare the feature amounts derived by the pixel value feature amount calculation unit with a threshold, and to sort the respective pixels or the respective small areas based on a result of the comparison; and a dynamic threshold determination unit configured to determine the threshold based on the feature amounts derived by the pixel value feature amount calculation unit. | 03-24-2016 |
| 20160088305 | METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL - The present invention provides a method and an apparatus for processing a video signal, and more particularly, a method and an apparatus for processing a video signal, which encode and decode the video signal. | 03-24-2016 |
| 20160088306 | PICTURE ORDER COUNT ALIGNMENT IN SCALABLE VIDEO - A POC recalculation value is retrieved by a decoder from an encoded representation of a RAP picture in a base layer of a video stream comprising pictures in multiple layers. POC values of reference pictures in a DPB of the decoder are recalculated using the POC recalculation value. By signaling the POC recalculation value in the RAP picture, which enables the decoder to correctly handle video streams with non-aligned RAP pictures. | 03-24-2016 |
| 20160088317 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method of decoding, on a per-block basis, a coded image included in a bitstream, includes: performing arithmetic decoding on a current block to be decoded; determining whether or not the current block is at the end of a slice; determining, when it is determined that the current block is not at the end of the slice, whether or not the current block is at the end of a sub-stream which is a structural unit of the image that is different from the slice; and performing arithmetic decoding on a sub-last bit and performing arithmetic decoding termination, when it is determined that the current block is at the end of the sub-stream. | 03-24-2016 |
| 20160094843 | FREQUENCY-DOMAIN DENOISING - Encoding and decoding using frequency-domain denoising are provided. Encoding and decoding using frequency-domain denoising may include identifying a current source block from a current source frame from a source video stream, generating a predicted block for the current source block, generating a source transform block by transforming the current source block into the frequency domain, generating a predicted transform block by transforming the predicted block into the frequency domain, generating a denoised transform block based on the source transform block and the predicted transform block, generating a denoised block by inverse transforming the denoised transform block, generating a residual block based on a difference between the denoised block and the predicted block, generating an encoded block by encoding the residual block, and outputting or storing the encoded block. | 03-31-2016 |
| 20160094844 | MOVING PICTURE CODING METHOD, AND MOVING PICTURE DECODING METHOD - A moving picture coding apparatus for performing inter-picture predictive coding for pictures constituting a moving picture is provided with a coding unit for performing predictive error coding for image data; a decoding unit for performing predictive error decoding for an output from the coding unit; a reference picture memory for holding output data from the decoding unit; and a motion vector detection unit for detecting motion vectors on the basis of the decoded image data stored in the memory. When coding a B picture as a target picture, information indicating whether or not the target picture should be used as a reference picture when coding another picture is added as header information. Therefore, in a decoding apparatus for decoding a bit stream Bs outputted from the moving picture coding apparatus, management of a memory for holding the reference picture can be facilitated on the basis of the header information. | 03-31-2016 |
| 20160094847 | COUPLING SAMPLE METADATA WITH MEDIA SAMPLES - Innovations in the area of sample metadata processing can help a media playback tool avoid loss of synchronization between sample metadata and media samples. For example, a media playback tool identifies encoded data and sample metadata for a current media sample, then couples the sample metadata with the current media sample. The media playback tool provides the sample metadata and encoded data for the current media sample to a media decoder, which maintains the coupling between at least one element of the sample metadata and the current media sample during at least one stage of decoding, even when the current media sample is dropped, delayed, split, or repeated. For example, the media playback tool can determine whether to drop the current media sample and, if the current media sample is dropped, also drop the sample metadata that is coupled with the current media sample. | 03-31-2016 |
| 20160094849 | THERMAL THROTTLING OF WiDi VIDEO STREAM RESOLUTION - Methods and apparatus relating to thermal throttling of WiDi (Wireless Display) video stream resolution are described. In an embodiment, logic generates one or more signals to cause a processor to a change the resolution and/or frame rate of a video stream in response to input from one or more sensors and one or more values. The one or more signals can also cause wireless display logic to modify a compression level of the video stream received from the processor prior to transmission of a compressed version of the video stream to a display device. Other embodiments are also disclosed and claimed. | 03-31-2016 |
| 20160100162 | Method And System For Optimizing Bitrate Selection - A method including encoding a video program into a plurality of video streams, each of the plurality of video streams being encoded at a corresponding one of a plurality of bitrates; providing, to a plurality of viewing clients, an option to select one of the plurality of video streams; determining a streaming capacity of each of the viewing clients; and determining an improved plurality of bitrates based on streaming capacities of the plurality of viewing clients. | 04-07-2016 |
| 20160100171 | PALETTE INDEX BINARIZATION FOR PALETTE-BASED VIDEO CODING - An example method of coding video data includes determining, for a current block of video data, a palette that includes a plurality of entries that each corresponds to a respective color value; determining a particular entry in the palette that is predicted to correspond to a color value of a current pixel of the current block; selecting a binarization from a plurality of binarizations; and coding, using the selected binarization, an index that indicates which entry in the palette corresponds to a color value for a current pixel of the current block, wherein coding the index using a first binarization of the plurality of binarizations comprises coding a syntax element that indicates whether the index is equal to the particular entry, and wherein coding the index using a second binarization of the plurality of binarizations comprises coding the index using a variable length code without coding the syntax element. | 04-07-2016 |
| 20160100196 | SYNTAX STRUCTURES INDICATING COMPLETION OF CODED REGIONS - Syntax structures that indicate the completion of coded regions of pictures are described. For example, a syntax structure in an elementary bitstream indicates the completion of a coded region of a picture. The syntax structure can be a type of network abstraction layer unit, a type of supplemental enhancement information message or another syntax structure. For example, a media processing tool such as an encoder can detect completion of a coded region of a picture, then output, in a predefined order in an elementary bitstream, syntax structure(s) that contain the coded region as well as a different syntax structure that indicates the completion of the coded region. Another media processing tool such as a decoder can receive, in a predefined order in an elementary bitstream, syntax structure(s) that contain a coded region of a picture as well as a different syntax structure that indicates the completion of the coded region. | 04-07-2016 |
| 20160105671 | ADAPTIVE STREAMING IN WIRELESS COMMUNICATION SYSTEMS - A client selects a first quality level from a plurality of quality levels used to encode segments of video content for transmission over an air interface in a wireless communication system. The first quality level is selected based upon an indication of a location of the client and an indication of congestion in the wireless communication system. The client transmits a request for a first segment of the video content encoded at the first quality level. | 04-14-2016 |
| 20160105672 | System and Method for Depth Map Coding for Smooth Depth Map Area - A method for coding a coding unit that is coded with a single sample value is provided. The method selects a coding pattern from at least two predetermined coding patterns, each of which includes a plurality of boundary neighboring samples of the coding unit that have been reconstructed, and decodes the coding unit according to a value of at least one of the plurality of boundary neighboring samples of the selected coding pattern that is available. | 04-14-2016 |
| 20160105674 | IMAGE DECODING METHOD OF DECODING A CURRENT PICTURE WITH PREDICTION USING ONE OR BOTH OF A FIRST REFERENCE PICTURE LIST AND A SECOND REFERENCE PICTURE LIST - An image coding method includes: adding, to a candidate list, a first adjacent motion vector as a candidate for a predicted motion vector to be used for coding the current motion vector; selecting the predicted motion vector from the candidate list; and coding the current motion vector, wherein in the adding, the first adjacent motion vector indicating a position in a first reference picture included in a first reference picture list is added to the candidate list for the current motion vector indicating a position in a second reference picture included in a second reference picture list. | 04-14-2016 |
| 20160105675 | METADATA HINTS TO SUPPORT BEST EFFORT DECODING FOR GREEN MPEG APPLICATIONS - In a coding system, an encoder codes video data according to a predetermined protocol, which, when decoded causes an associated decoder to perform a predetermined sequence of decoding operations. The encoder may perform local decodes of the coded video data, both in the manner dictated by the coding protocol that is at work and also by one or more alternative decoding operations. The encoder may estimate relative performance of the alternative decoding operations as compared to a decoding operation that is mandated by the coding protocol. The encoder may provide identifiers in metadata that is associated with the coded video data to identify such levels of distortion and/or levels of resources conserved. A decoder may refer to such identifiers when determining when to engage alternative decoding operations as may be warranted under resource conservation policies. | 04-14-2016 |
| 20160105678 | Video Parameter Techniques - Video parameter storage and processing techniques with MPEG-4 file format are described. In one or more implementations, techniques are described in which sequence and parameter sets are specified in-band with collections of pictures of video as the default option. Techniques are also described in which different parameter set identifiers (IDs) are specified for the collections within the video. Techniques are also described in which maximum clip parameters are specified in a sample description box. Further, techniques are described in which parameter sets are inserted at a beginning of sample data when an access unit delimiter (AUD) network access layer (NAL) unit is not present or are inserted after the AUD NAL unit in the video when present. | 04-14-2016 |
| 20160105690 | DESCRIPTION OF IMAGE COMPOSITION WITH HEVC STILL IMAGE FILE FORMAT - A method of encapsulating an encoded bitstream representing one or more images includes providing description of images and/or sub-image picture, providing composed picture description, and outputting the bitstream. The description of images and/or sub-image pictures identifying portions of the bitstream representing the images and/or sub-images of the one or more images is provided. The composed picture description of at least one composed picture formed by one or more images and/or sub-image pictures also is provided. The bitstream, together with the composed picture description, is output as an encapsulated data file. | 04-14-2016 |
| 20160119620 | IMAGE INFORMATION ENCODING AND DECODING METHOD - The present invention relates to an image information encoding and decoding method and a device for same. One embodiment of an image information encoding method according to the present invention, as an image information encoding method according to another embodiment of the present invention, includes the steps of: generating a restore block; applying a deblocking filter on the restore block; applying a Sample Adaptive Offset (SAO) on the restore block having the deblocking filter applied thereon; and transmitting information on the SAO application. During the applying of the SAO, the SAO is applied to chroma pixels, and during the transmitting of the information, in addition to information on whether the SAO is applied on the chroma pixels, at least one of area information, division information on the SAO coverage area, SAO type information, and SAO offset information is transmitted. | 04-28-2016 |
| 20160119624 | DYNAMIC ON SCREEN DISPLAY USING A COMPRESSED VIDEO STREAM - Systems, apparatus, articles, and methods are described below including operations for dynamic on screen display using a compressed video stream. | 04-28-2016 |
| 20160119626 | SYSTEM TO DISPATCH VIDEO DECODING TO DEDICATED HARDWARE RESOURCES - A system to perform processing operations of input (video) streams, including is disclosed. The system consists of an input module, a stream type detection engine, a plurality of processing resources a resource monitoring engine, an attribution module, a dispatching module, and various other optional interface modules. | 04-28-2016 |
| 20160119633 | VIDEO ENCODING FOR SOCIAL MEDIA - In some aspects, the disclosure is directed to methods and systems for encoding and sharing media clips via a social networking provider responsive to a user interaction via a single “like” or “share” button. Media may be constantly buffered as the user watches the program, such that the user need not initiate recording, enabling the user to quickly share amusing or media clips as they happen live. The device may decode, scale or subsample, and compress or re-encode the media to take up less space in a buffer of the device and/or to comply with copyright fair use requirements. Responsive to the user interaction or “share” command, the device may transfer the contents of the buffer to a social media service along with instructions to generate a post to the social network identifying the user, media, and/or buffer contents. | 04-28-2016 |
| 20160119636 | FLEXIBLE BAND OFFSET MODE IN SAMPLE ADAPTIVE OFFSET IN HEVC - A Flexible Band Offset (FBO) apparatus and method of performing Sample Adaptive Offset (SAO) filtering within encoders and decoders, such as according to the High Efficiency Video Coding (HEVC) standard, and similarly configured coding devices. The number of Band Offset (BO) modes and the number of necessary offsets is reduced. The invention beneficially provides simpler coding, reduces temporary buffer size requirements, and can yield a small performance gain over existing SAO techniques of HEVC test model HM 5. | 04-28-2016 |
| 20160119649 | Device and Method for Processing Ultra High Definition (UHD) Video Data Using High Efficiency Video Coding (HEVC) Universal Decoder - The present invention discloses a device and method for processing video data using HEVC universal decoder. The HEVC universal decoder is designed to address the parallel execution issues and bandwidth issues when there is a decoded data transfer among the processors. The decoder is designed to achieve better core utilization with reduced memory bandwidth. The decoder is designed to work in two partitions to obtain the decoded YUV pictures output from a bit-stream. The invention provides for reduction in the number of processors used in the first partition of the HEVC universal decoder without affecting the decoding rate of the bit-streams. In second partition, decoding of one data-frame is carried out simultaneously by four processors. Both the partitions complete their respective decoding processes in equal amount of time. | 04-28-2016 |
| 20160127726 | CODING AND DECODING APPARATUS - The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is “inter_pred_flag”. | 05-05-2016 |
| 20160127728 | VIDEO COMPRESSION APPARATUS, VIDEO PLAYBACK APPARATUS AND VIDEO DELIVERY SYSTEM - According to an embodiment, a video compression apparatus includes a controller. The controller controls, based on a first random access point included in the first bitstream, a second random access point included in a second bitstream corresponding to compressed data of the second video. The second bitstream is formed from a plurality of picture groups. Each of the plurality of picture groups includes at least one picture subgroup. The controller selects, from the second bitstream, an earliest picture subgroup on or after the first random access point in display order and sets an earliest picture of the selected picture subgroup in coding order as the second random access point. | 05-05-2016 |
| 20160127730 | METHODS AND SYSTEMS FOR ENCODING PICTURES ASSOCIATED WITH VIDEO DATA - Several methods and systems for encoding pictures associated with video data are disclosed. In an embodiment, a method includes determining by a processing module, whether a picture is to be encoded based on at least one of a skip assessment associated with the picture and an encoding status of a pre-selected number of pictures preceding the picture in an encoding sequence. The method further includes encoding by the processing module, a plurality of rows of video data associated with the picture upon determining that the picture is to be encoded, wherein the plurality of rows are encoded based on a pre-selected maximum encoded picture size. | 05-05-2016 |
| 20160127731 | MACROBLOCK SKIP MODE JUDGEMENT METHOD FOR ENCODER - A macroblock skip mode judgement method for an encoder applies to implementation of H.264 encoder hardware compressing a plurality of successive frames and comprises steps: undertaking IME (Integer Motion Estimation) for two frames appearing at neighboring time points to calculate MV (Motion Vector), and calculating PMV (Predicted Motion Vector) of the frame appearing the preceding time point; if MV equals PMV, modifying the cost function of MV to be a negative value; undertaking block encoding and compare the costs; if the cost of the Inter mode is smaller than the cost of the Intra mode, setting the mb (macroblock) skip flag to be 1; using Entropy to compress the mb skip flag, and omitting compressing the macroblock represented by the mb skip flag. | 05-05-2016 |
| 20160127733 | System Architecture for Distributed Coding - A system may receive an input stream for a coding operation by a coding device. The system may determine a processing device to assist the coding device with the coding operation. The processing device may generate an indicator containing coding information or other coding assistance by processing the input stream. The processing device may send the indicator to the coding device. In some cases, the indicator may be embedded in the metadata of the stream by the processing device. The indicator may be extracted by the coding device. After reception of the indicator, the coding device may execute the coding task while using the information in the indicator to assist. | 05-05-2016 |
| 20160134865 | CONTROLLING POWER CONSUMPTION IN VIDEO ENCODING BASED ON INFORMATION REGARDING STATIC AMOUNT OF AN IMAGE FRAME - An apparatus and methods for controlling power consumption in video encoding obtain, before motion estimation is performed on an image frame to be encoded, information regarding an amount of the image frame to be encoded that is static with respect to a previously encoded image frame. The apparatus and methods adjust power consumption of the video encoder based on the obtained information regarding the amount of the image frame to be encoded that is static. | 05-12-2016 |
| 20160134868 | INTER-LAYER PARAMETER SET FOR HEVC EXTENSIONS - A video coding device may provide video data processing. The video coding device may receive a plurality of video representation format subsets. The plurality of video representation format subsets may correspond to a plurality of layers. Each of the plurality of video representation subsets may include one or more video representation parameter values. The video coding device may receive a video representation format subset index (e.g., in a cross-layer parameter set) associated with a current layer. The video coding device may determine, using the video representation format subset index, one of the plurality of video representation format subsets associated with the current layer. | 05-12-2016 |
| 20160134876 | LOW COMPLEXITY CODING BASED ON DYNAMIC MODE DECISION BRANCHING FOR LARGEST CODING UNITS - Provided are techniques for low complexity video coding. For example, a video coder may be configured to calculate a first sum of absolute difference (SAD) value between a CU block and a corresponding block in a reference frame for the largest coding unit (LCU). The video coder may define conditions (e.g., background and/or homogeneous conditions) for the branching based at least in part on the first SAD value. The video coder may also determine the branching based on detecting the background or homogeneous condition, the branching including a first branch corresponding to both a first CU size of the CU block and a second CU size of a sub-block of the CU block. The video coder may then set the first branch to correspond to the first CU size, if the first CU size or the second CU size satisfies the background condition. | 05-12-2016 |
| 20160134877 | LOW COMPLEXITY CODING BASED ON DYNAMIC MODE DECISION BRANCHING - Provided are techniques for low complexity video coding. For example, a video coder may be configured to calculate a first sum of absolute difference (SAD) value between a coding unit (CU) block and a first corresponding block in a reference frame, and define branching conditions for branching of CU sizes based on the first SAD value, the branching conditions including a background condition and/or a homogeneous condition. The video coder may be configured to detect the background condition if the first SAD value of the CU block is less than a first threshold background value, and detect the homogeneous condition if a second SAD value of a sub-block of the CU block is between upper and lower homogeneous threshold values based on the first SAD value. The branching of the CU sizes may be based on detecting the background or homogeneous conditions. | 05-12-2016 |
| 20160134881 | PARALLEL MEDIA ENCODING - A system can include a controller that employs an application interface to create and manage resources for encoding or transcoding an input media asset. The resources can include a media splitter to divide the input media asset into a plurality of media blocks. A media analyzer can analyze separately media content in each of the media blocks to determine respective encoding parameters for each of the media blocks based on a complexity for each of the respective media blocks. A plurality of encoders can encode or transcode, in parallel with each other, each of the media blocks based on the determined encoding parameters to generate an encoded media file in a target format. | 05-12-2016 |
| 20160142707 | Adaptive Filtering Based Upon Boundary Strength - Adjacent regions are identified in an image. Coding parameters for the adjacent regions are identified. Selective filtering is performed at the region between the identified adjacent regions. | 05-19-2016 |
| 20160142708 | Adaptive Filtering Based Upon Boundary Strength - Adjacent regions are identified in an image. Coding parameters for the adjacent regions are identified. Selective filtering is performed at the region between the identified adjacent regions. | 05-19-2016 |
| 20160142711 | VIDEO CODER WITH ADAPTIVE BAC ENGINE AND METHODS FOR USE THEREWITH - Aspects of the subject disclosure may include, for example, a binary arithmetic coding engine that includes a lossy binary arithmetic coding module configured to process input data into lossy binary arithmetic coded data when a mode selection signal indicates a first mode of operation. A lossless binary arithmetic coding module processes the input data into lossless binary arithmetic coded data when the mode selection signal indicates a second mode of operation. Other embodiments are disclosed. | 05-19-2016 |
| 20160142712 | ENCODER, DECODER AND METHOD OF OPERATION USING INTERPOLATION - A method of encoding data in an encoder to generate corresponding encoded data includes receiving the data to be encoded and analyzing sub-portions of the data to be encoded to determine one or more encoding algorithms which are to be applied to encode the sub-portions, wherein the one or more encoding algorithms include at least one interpolation algorithm; computing one or more interpolation parameters for the at least one interpolation algorithm which are representative of data values of the sub-portion of the data to be encoded by the at least one interpolation algorithm; encoding a remainder of the sub-portions of the data to be encoded using the one or more encoding algorithms; and combining data generated in the computing and encoding to generate the encoded data. A method is also disclosed for decoding encoded data in a decoder. The methods may be employed in an encoder, decoder, and codec. | 05-19-2016 |
| 20160150212 | LIVE SELECTIVE ADAPTIVE BANDWIDTH - A live selective adaptive bandwidth method enables transmission of three dimensional 360 degree virtual reality content by slicing the content and utilizing different resolutions of the content, where content in the visible area of the user is a higher resolution than content in the non-visible area of the user. Additionally, network information such as available bandwidth is used in determining which resolution content to be transmitted. | 05-26-2016 |
| 20160150233 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image decoding method for decoding a bitstream including a coded signal resulting from coding slices into which an image is partitioned and each of which includes coding units, includes decoding the coded signal, wherein each of the slices is either a normal slice having, in a slice header, information used for another slice or a dependent slice which is decoded using information included in a slice header of another slice, the image includes rows each of which includes coding units, and when the normal slice starts at a position other than the beginning of the first row, the second row immediately following the first row does not start with the dependent slice. | 05-26-2016 |
| 20160150234 | PALETTE MODE CODING - A device for decoding video data may be configured to determine a block of the video data is coded using a palette-based coding mode; determine a sample of the block of video data is coded using a copy from top mode or an index mode; and decode a greater than zero flag to indicate whether a run value is greater than zero, wherein the run value specifies a number of samples subsequent to the sample that have a same mode as the sample. | 05-26-2016 |
| 20160150235 | LAYER-BASED VIDEO ENCODING - A technique for encoding a video signal generates multiple layers and multiple corresponding masks for each of a set of blocks of the video signal. Each of the layers for a given block is a rendition of that block, and each of the masks distinguishes pixels of the respective layer that are relevant in reconstructing the block from pixels that are not. The encoder applies lossy compression to each of the layers and transmits the lossily compressed layers and a set of the masks to a decoder, such that the decoder may reconstruct the respective block from the layers and the mask(s). | 05-26-2016 |
| 20160150237 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING 3DTV BROADCASTING - An apparatus for transmitting 3DTV broadcasting encodes a base video using scalable video coding (SVC) or scalable high efficiency video coding (SHVC) scheme to generate a base layer stream and an enhancement layer stream of the base video, encodes each of an additional video and video enhancement information data for enhancing video quality of the additional video, transmits the base layer stream and the enhancement layer stream of the base video through a base layer channel and an enhancement layer channel, respectively, and transmits the encoded additional video and the encoded video enhancement information data through the base layer channel or the enhancement layer channel. | 05-26-2016 |
| 20160150250 | Method of Coding and Decoding Images, Coding and Decoding Device and Computer Programs Corresponding Thereto - A method for coding includes; segmenting an image into blocks; grouping blocks into a number of subsets; coding, using an entropy coding module, each subset, by associating digital information with symbols of each block of a subset, including, for the first block of the image, initializing state variables of the coding module; and generating a data sub-stream representative of at least one of the coded subsets of blocks. Where a current block is the first block to be coded of a subset, symbol occurrence probabilities for the first current block are determined based on those for a coded and decoded predetermined block of at least one other subset. Where the current block is the last coded block of the subset: writing, in the sub-stream representative of the subset, the entire the digital information associated with the symbols during coding of the blocks of the subset, and implementing the initializing sub-step. | 05-26-2016 |
| 20160156904 | IMAGE DECODING APPARATUS AND IMAGE CODING APPARATUS | 06-02-2016 |
| 20160156908 | METHOD AND DEVICE FOR ENCODING AND DECODING A HDR PICTURE AND A LDR PICTURE | 06-02-2016 |
| 20160156909 | ARITHMETIC CODING FOR INFORMATION RELATED TO SAMPLE ADAPTIVE OFFSET PROCESSING | 06-02-2016 |
| 20160156913 | METHOD AND APPARATUS FOR ENCODING/DECODING SCALABLE VIDEO SIGNAL | 06-02-2016 |
| 20160156938 | APPARATUS AND METHOD OF SAMPLE ADAPTIVE OFFSET FOR LUMA AND CHROMA COMPONENTS | 06-02-2016 |
| 20160165251 | Signaling Scalability Information in a Parameter Set - A system for decoding a video bitstream includes receiving a frame of the video that includes at least one slice and at least one tile and where each of the at least one slice and the at least one tile are not all aligned with one another. | 06-09-2016 |
| 20160173870 | Sample adaptive offset (SAO) in accordance with video coding | 06-16-2016 |
| 20160182905 | INTRA PREDICTION MODE ENCODING/DECODING METHOD AND APPARATUS FOR SAME | 06-23-2016 |
| 20160182911 | DE-JUDDERING TECHNIQUES FOR CODED VIDEO | 06-23-2016 |
| 20160191915 | VIDEO ENCODING AND DECODING METHODS AND DEVICE USING SAME - The present invention relates to video encoding/decoding methods and device, wherein the video encoding method according to the invention comprises the following steps: acquiring information of peripheral blocks; setting the information about a current block based on the information of the peripheral blocks; and encoding the current block based on the set information, wherein the current block and the peripheral blocks may be a CU (coding unit). | 06-30-2016 |
| 20160191918 | Methods and Systems for Estimating Entropy - It is a challenge task to conduct Entropy computation on the attributes of packet header in high-speed networks. Motivated by Ashwin Lall et al., we present a stream-based scheme to estimate to the entropy norm based on Count Sketch algorithm. The system is implemented on a NetFPGA-10G platform. It is capable of processing IP packets and computing the entropy in 30 Gbps line rate. | 06-30-2016 |
| 20160191919 | ARITHMETIC DECODING METHOD AND ARITHMETIC CODING METHOD - An arithmetic decoding method is a method in which a context variable specifying a probability of a possible value of each of elements included in a binary string corresponding to a value of a given variable is initialized and arithmetic decoding is performed, using the context variable. The method includes: determining, from among a plurality of initialization methods as a method of initializing the context variable, an initialization method corresponding to the given variable or a group which includes the given variable; and initializing the context variable using the determined initialization method. | 06-30-2016 |
| 20160191922 | MIXED-LEVEL MULTI-CORE PARALLEL VIDEO DECODING SYSTEM - A method, apparatus and computer readable medium storing a corresponding computer program for decoding a video bitstream based on multiple decoder cores are disclosed. In one embodiment of the present invention, the method arranges multiple decoder cores to decode one or more frames from a video bitstream using mixed level parallel decoding. The multiple decoder cores are arranged into groups of multiple decoder cores for parallel decoding one or more frames by using one group of multiple decoder cores for said one or more frames, wherein each group of multiple decoder cores comprises one or more decoder cores. The number of frames to be decoded in the mixed level parallel decoding or which frames to be decoded in the mixed level parallel decoding is adaptively determined. | 06-30-2016 |
| 20160191928 | IMAGE ENCODING AND DECODING METHOD SUPPORTING PLURALITY OF LAYERS AND APPARATUS USING SAME - An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: when an initial reference picture list of a current picture is configured, receiving flag information indicating whether reference picture set information of a reference layer to which the current picture refers is used; generating the initial reference picture list on the basis of the flag information; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for generating a reference picture list including a picture of a layer, which is different from a layer to be currently encoded and decoded, and an apparatus using the same. | 06-30-2016 |
| 20160191953 | ARITHMETIC ENCODING-DECODING METHOD AND CODEC FOR COMPRESSION OF VIDEO IMAGE BLOCK - An arithmetic encoding-decoding method for compression of a video image block. The method includes an encoding process and a decoding process. The encoding process includes: 1) acquiring an information of an image block to be encoded; 2) extracting an encoding command of a weighted skip model; 3) acquiring an index of a reference frame according to the information of the image block to be encoded and the command of the weighted skip model, in which the reference frame includes a prediction block for reconstructing the image block to be encoded; 4) acquiring a context-based adaptive probability model for encoding; and 5) performing arithmetic encoding of the index of the reference frame and writing arithmetic codes into an arithmetically encoded bitstream according to the context-based adaptive probability model for encoding. | 06-30-2016 |
| 20160198157 | VIDEO DECODER FOR SLICES | 07-07-2016 |
| 20160205398 | APPARATUSES AND METHODS FOR EFFICIENT RANDOM NOISE ENCODING | 07-14-2016 |
| 20160205399 | Methods For Improving Low-Cost Video/Image Compression | 07-14-2016 |
| 20160255348 | ADAPTIVE JOINT BITRATE ALLOCATION | 09-01-2016 |
| 20160255350 | MULTILAYER-BASED IMAGE ENCODING/DECODING METHOD AND APPARATUS | 09-01-2016 |
| 20160255351 | REFORMATTING DATA TO DECREASE BANDWIDTH BETWEEN A VIDEO ENCODER AND A BUFFER | 09-01-2016 |
| 20160255353 | HIGHEST TEMPORAL SUB-LAYER LIST | 09-01-2016 |
| 20160255355 | METHOD AND ARRANGEMENT FOR VIDEO TRANSCODING USING MODE OR MOTION OR IN-LOOP FILTER INFORMATION | 09-01-2016 |
| 20160255368 | METHOD AND APPARATUS FOR CODING/DECODING VIDEO COMPRISING MULTI-VIEW | 09-01-2016 |
| 20160381365 | APPARATUSES AND METHODS FOR PERFORMING INFORMATION EXTRACTION AND INSERTION ON BITSTREAMS - Examples of methods and apparatus for performing wavefront parallel decode of video bitstreams are described herein. An example apparatus includes a cabac decoder configured to decode a cabac bitstream and generate an output bitstream. The output bitstream contains a plurality of NAL units, each NAL unit being associated with a respective row of a macroblock. The apparatus includes an extractor block configured to extract entry point information associated with a row, and a memory configured to store the extracted entry point information associated with the row. The apparatus includes an insertion block configured to read from the memory the entry point information and insert the entry point information into the NAL unit associated with the row. The plurality of NAL units are provided to at least one macroblock decoder for performing parallel wavefront decode on the output bitstream. | 12-29-2016 |
| 20160381369 | IMAGE CAPTURING SYSTEM, IMAGE CAPTURING APPARATUS, DECODING APPARATUS, IMAGE CAPTURING METHOD, AND DISPLAY CONTROL SYSTEM - An image capturing system includes a photoelectric conversion unit, a charge holding unit, a multiple sampling information setting unit, a multiple sampling unit, a conversion unit, and an image reconstruction unit. The photoelectric conversion unit converts optical signals received by a plurality of pixels to electric signals. The charge holding unit stores the electric signals and holds the electric signals as charge signals. The multiple sampling information setting unit sets multiple sampling information used for a multiple sampling process. The multiple sampling information includes first multiple sampling information and second multiple sampling information. The multiple sampling unit performs the multiple sampling process using the multiple sampling information and the charge signals so as to output signals. The conversion unit converts the output signals to digital signals. The image reconstruction unit generates reconstructed images using the digital signals and the multiple sampling information, and outputs the reconstructed images. | 12-29-2016 |
| 20160381390 | SYSTEM AND A METHOD FOR DISOCLUDED REGION CODING IN A MULTIVIEW VIDEO DATA STREAM - A method for disoccluded region coding in multiview video data stream by an entropy encoder, the method comprising the steps of: coding a block of a base view; storing state and estimated probabilities in contexts models of the entropy encoder in a context storage module with a reference identifying the block of the base view; repeating the aforementioned steps of coding and storing for every block of the base view of the multiview video data stream; starting coding of a disoccluded region and dividing, into blocks, disoccluded area of a side view associated with the base view; determining, for neighboring blocks, of currently coded block, that have not been in the disoccluded area, a corresponding block in the base view, using a block correspondence database; when such a correspondence is determined, reading a previously stored state and estimated probabilities in context models of the entropy encoder for the corresponding block; copying all coding modes from the corresponding block to the neighboring block; applying state and estimated probabilities in context models to the entropy encoder of the block that is adjacent to the currently processed block; encoding, by the entropy encoder, the selected block of the side view; and repeating steps (e) to (i) for all blocks of the side view associated with the base view processed in steps (a) to (b). | 12-29-2016 |
| 20170237984 | METHOD AND APPARATUS FOR FRAME CODING IN VERTICAL RASTER SCAN ORDER FOR HEVC | 08-17-2017 |
| 20170237987 | STATISTICAL MULTIPLEXING WITH HETEROGENEOUS ENCODER POOL | 08-17-2017 |
| 20170237988 | DECODER, METHOD AND SYSTEM FOR DECODING MULTIMEDIA STREAMS | 08-17-2017 |
| 20170237992 | METHOD FOR ROTATING MACRO-BLOCKS OF A FRAME OF A VIDEO STREAM | 08-17-2017 |
| 20170237995 | METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS | 08-17-2017 |
| 20170238000 | PARALLEL VIDEO PROCESSING APPARATUS USING MULTICORE SYSTEM AND METHOD THEREOF | 08-17-2017 |
| 20180027237 | FRAMEWORK FOR EMBEDDING DATA IN ENCODED VIDEO | 01-25-2018 |
| 20180027239 | SYSTEMS AND METHODS FOR ENHANCED VIDEO ENCODING | 01-25-2018 |
| 20180027243 | SYSTEM AND METHOD FOR SENDING VIDEO DATA OVER A WIRELESS CHANNEL | 01-25-2018 |
| 20180027246 | Method and Apparatus for Palette Predictor Initialization for Palette Coding in Video and Image Compression | 01-25-2018 |
| 20180027247 | METHOD AND APPARATUS FOR VIDEO ENCODING FOR EACH SPATIAL SUB-AREA, AND METHOD AND APPARATUS FOR VIDEO DECODING FOR EACH SPATIAL SUB-AREA | 01-25-2018 |
| 20180027259 | VIDEO ENCODER | 01-25-2018 |
| 20190149819 | SYSTEM AND METHOD FOR MITIGATING MOTION ARTIFACTS IN A MEDIA STREAMING NETWORK | 05-16-2019 |
| 20190149820 | APPARATUS FOR ENCODING AND DECODING IMAGE BY SKIP ENCODING AND METHOD FOR SAME | 05-16-2019 |
| 20190149821 | VIDEO SIGNAL ENCODING/DECODING METHOD AND APPARATUS | 05-16-2019 |
| 20190149822 | SYSTEMS AND METHODS FOR CODING TRANSFORM DATA | 05-16-2019 |
| 20190149826 | METHOD AND DEVICE FOR ENTROPY CODING/DECODING | 05-16-2019 |
| 20190149830 | Scalable Video Coding using Reference and Scaled Reference Layer Offsets | 05-16-2019 |
| 20190149846 | APPARATUS AND METHOD OF SAMPLE ADAPTIVE OFFSET FOR LUMA AND CHROMA COMPONENTS | 05-16-2019 |
| 20220141455 | AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - A method comprising: obtaining a configuration of at least one neural network comprising a plurality of intra-prediction mode agnostic layers and one or more intra-prediction mode specific layers, the one or more intra-prediction mode specific layers corresponding to different intra-prediction modes; obtaining at least one input video frame comprising a plurality of blocks; determining to encode one or more blocks using intra prediction; determining an intra-prediction mode for each of said one or more blocks; grouping blocks having same intra-prediction mode into groups, each group being assigned with a computation path among the plurality of intra-prediction mode agnostic and the one or more intra-prediction mode specific layers; training the plurality of intra-prediction mode agnostic and/or the one or more intra-prediction mode specific layers of the neural networks based on a training loss between an output of the neural networks relating to a group of blocks and ground-truth blocks, wherein the ground-truth blocks are either blocks of the input video frame or reconstructed blocks; and encoding a block using a computation path assigned to an intra-prediction mode for the block. | 05-05-2022 |
| 20220141457 | DEBLOCKING USING SUB-PEL MOTION VECTOR THRESHOLD - A method for deblocking at least one boundary of a coding unit, wherein the boundary forms a first side and a second side of the coding unit, wherein a video picture comprises the coding unit, and wherein the first and second sides use a same reference picture. The method includes obtaining a first motion vector component in the first side; obtaining a second motion vector component in the second side; determining whether an absolute difference between the first motion vector component and the second motion vector component is equal to or larger than a predetermined threshold that is less than 1 sample; and as a result of determining that the absolute difference between the first motion vector component and the second motion vector component is equal to or larger than the predetermined threshold, applying deblocking to the vertical or horizontal boundary between the first side and the second side. | 05-05-2022 |
| 20220141459 | OFFSET-BASED REFINEMENT OF INTRA PREDICTION (ORIP) OF VIDEO CODING - The present disclosure provides methods and apparatuses for applying intra prediction refinement to intra predicted samples. An exemplary method includes: determining a filter based on neighboring samples of intra predicted samples of a picture; generating an offset value based on the neighboring samples; refining the intra predicted samples by adding the offset value; and applying the filter to the intra predicted samples. | 05-05-2022 |
| 20220141463 | IMAGING METHOD AND DEVICE - Disclosed are an imaging method and device. The method includes: acquiring, at a specified imaging time, a pulse sequence in a time period before the specified imaging time, with regard to each pixel of a plurality of pixels; calculating a pixel value of the pixel according to the pulse sequence; and obtaining an image at the specified imaging time according to a space arrangement of the pixels, in accordance with pixel values of the plurality of pixels at the specified imaging time. | 05-05-2022 |
| 20220141465 | METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL - This video signal decoding device includes a processor, and the processor is characterized by: determining a result value that indicates the direction for dividing the current transform block (TB) on the basis of preset conditions; dividing the current transform block into a plurality of transform blocks on the basis of the result value; and decoding a video signal by using the plurality of transform blocks, wherein the preset conditions include a condition pertaining to a color component of the current transform block. | 05-05-2022 |
| 20220141467 | METHOD AND APPARATUS FOR ENCODING OR DECODING VIDEO DATA IN FRUC MODE WITH REDUCED MEMORY ACCESSES - The present disclosure concerns a method and a device for encoding or decoding video data. It concerns more particularly the encoding according to a particular encoding mode using a decoder side motion vector derivation mode referenced as frame-rate up conversion mode or FRUC mode. It concerns encoding and decoding improvement which reduce the need for memory accesses when using an encoding mode where the motion information is predicted using a decoder side motion vector derivation method. | 05-05-2022 |
| 20220141468 | DMVR-BASED INTER-PREDICTION METHOD AND DEVICE - An image decoding method performed by a decoding device according to the present document comprises the steps of: deriving a motion vector for a current block; determining whether to apply refinement to the motion vector for the current block; deriving a refined motion vector by applying decoder-side motion vector refinement (DMVR) to the motion vector if it is determined to apply refinement to the motion vector for the current block; deriving prediction samples for the current block on the basis of the refined motion vector; and generating reconstruction samples for the current block on the basis of the prediction samples, wherein the step of determining whether to apply refinement includes determining whether to apply the refinement on the basis of at least one of the size of the current block and bi-prediction weight index information for the current block. | 05-05-2022 |
| 20220141470 | SYSTEM AND METHOD FOR CONSTRUCTING A PLANE FOR PLANAR PREDICTION - A system and method of defining a plane for planar coding in JVET in which first and second lines can be defined based upon pixels in left-adjacent and top-adjacent coding units. In some embodiments, the least squares method can be employed to define the relevant lines. One point along each of the lines can then be identified and the y-intercepts of the two lines can be averaged to obtain a third point. The three points can then be used to identify and define a plane for planar coding in JVET. | 05-05-2022 |
| 20220141497 | EXTENDED MAXIMUM CODING UNIT SIZE - A method, computer program, and computer system is provided for encoding video data. Data corresponding to a video frame is received. The video frame data is divided into one or more coding tree units having a height value greater than 128 pixels and a width value greater than 128 pixels. One or more of the coding tree units are further subdivided to a size smaller than 128 pixels by 128 pixels. The video data is encoded based on the divided and subdivided coding tree units. | 05-05-2022 |
