34th week of 2022 patent applcation highlights part 76 |
Patent application number | Title | Published |
20220272296 | Delay Equalization in Event-Based Vision Sensors - An event based pixel sensor system employing delay equalization between differently illuminated pixels. | 2022-08-25 |
20220272297 | IMAGING APPARATUS AND IMAGING SYSTEM - This technology relates to an imaging apparatus and an imaging system for improving the accuracy of distance measurement performed by use of SPADs. | 2022-08-25 |
20220272298 | ANALOG COUNTER CIRCUITS AND READ-OUT INTEGRATED CIRCUITS AND INFRARED DETECTORS INCORPORATING THE SAME - Analog counter circuits, read-out integrated circuits, and infrared detector devices are disclosed. In one embodiment, an analog counter circuit includes a first capacitor including a first terminal and a second terminal, a switch electrically coupled the first capacitor and a first voltage input, a field effect transistor, and a second capacitor. Setting the switch to an on-state pre-charges the first capacitor such that a voltage at the second terminal of the first capacitor is the first voltage. Applying a charge voltage at a charge input further charges the first capacitor. When a voltage at the second terminal of the first capacitor is greater than a threshold voltage of the field effect transistor, the field effect transistor turns on and transfers a charge on the first capacitor to the second capacitor. | 2022-08-25 |
20220272299 | Display Apparatus - The present technology relates to a display apparatus that can more reliably suppress effects of heating. | 2022-08-25 |
20220272300 | CONFERENCE DEVICE WITH MULTI-VIDEOSTREAM CONTROL - A conference device comprising a first image sensor for provision of first image data, a first image processor configured for provision of a first primary videostream and a first secondary videostream based on the first image data, an intermediate image processor in communication with the first image processor and configured for provision of a field-of-view videostream and a region-of-interest videostream, wherein the field-of-view videostream is based on the first primary videostream, and the region-of-interest videostream is based on the first secondary videostream, and an output processor configured to determine first image control data based on the field-of-view videostream and transmit the first image control data to the first image processor, wherein the first image processor is configured for provision of the first secondary videostream based on the first image control data. | 2022-08-25 |
20220272301 | METHOD, COMPUTER PROGRAM AND SYSTEM FOR CONFIGURING A MULTI-POINT VIDEO CONFERENCING SESSION - A multi-point videoconferencing system includes video conferencing terminals in communication with a multipoint conferencing node (MCN). A method includes defining at least a first virtual studio and a second virtual studio, each of the at least first and second virtual studios having a policy for each of a set of the tags; initiating a first multi-point videoconferencing session according to the first virtual studio, such that each of the video conferencing terminals in the first multi-point videoconferencing session is connected to the MCN according to the first virtual studio policy of at least one tag of the video conferencing terminal; and reconfiguring, upon switching to the second virtual studio, the first multi-point videoconferencing session according to the second virtual studio, such that each of the videoconferencing terminals in the first multi-point videoconferencing session is connected to the MCN according to the second virtual studio policy for at least one tag. | 2022-08-25 |
20220272302 | IN-VEHICLE MONITORING DEVICE FOR VEHICLE - An in-vehicle monitoring device includes a first imaging member, a second imaging member, and a controller. The first imaging member is configured to perform first imaging to capture a first image of one or more occupants in a passenger compartment of the vehicle. The second imaging member is configured to capture a second image of the one or more occupants. The controller is configured to execute a monitoring process on the first image and the second image. The first imaging member and the second imaging member are disposed in a center portion of the vehicle in a vehicle width direction of the vehicle so as to be arranged side-by-side in the vehicle width direction such that at least a portion of an imaging range of the first imaging member and at least a portion of an imaging range of the second imaging member overlap. | 2022-08-25 |
20220272303 | TECHNIQUES FOR DISPLAYING MOTION INFORMATION WITH VIDEOS - This disclosure describes, in part, techniques for displaying location information of an object along with a video depicting the object. For instance, an electronic device may use a radar sensor to generate radar data representing the locations and an imaging device to generate image data representing the video. A user device may then use the image data to display the video. Additionally, the user device may display a map of a geographic area that includes the electronic device over a portion of the video. The electronic device then uses the radar data to determine positions on the map that corresponds to the locations. Using the positions, the electronic device displays interface elements representing the locations of the object. In some circumstances, the interface elements include different characteristics, such as colors, indicating a direction of motion of the object. | 2022-08-25 |
20220272304 | VIDEO MONITORING APPARATUS, CONTROL METHOD THEREOF, AND COMPUTER READABLE MEDIUM - A position and pose determination unit ( | 2022-08-25 |
20220272305 | System for Detection and Video Sharing of Sports Highlights - An automatic system for detecting goals, trimming a portion of the video where they occur, and sending it to players and related persons' electronic devices. The system can send goals and notable moments of matches or practice. It can operate on soccer, hockey, and other type of sports. The system works by itself without the help of any human intervention once in operation. | 2022-08-25 |
20220272306 | SYSTEM FOR AUTOMATICALLY TRIGGERING A RECORDING - System, method, and media for providing automatic recording of an event. The event may be detected from a set of data collected at a sensor. A recording device manager may send signals to other sensors and electromechanical devices to activate these sensors and electromechanical devices based on detection of the triggering event. The sensor may collect data associated with the triggering event and the electromechanical devices may perform actions based on the triggering event. | 2022-08-25 |
20220272307 | IMAGE PROCESSING METHOD AND APPARATUS - An image processing method and apparatus are provided. The image processing method includes converting an input image to a first channel separated image having a same resolution as the input image, the first channel separated image comprising a plurality of separate channels, generating a second channel separated image by performing a convolution operation on the first channel separated image, the second channel separated image comprising the plurality of separate channels and having a same resolution as the first channel separated image, and generating a restored image corresponding to the input image based on the second channel separated image. | 2022-08-25 |
20220272308 | DISPLAY DEVICE AND APPARATUS - A display device is provided in which a plurality of display units include a first type unit and a second type unit, a peak wavelength of the first type unit is a first wavelength in a range of greater than or equal to 650 nm and less than or equal to 700 nm, and a peak wavelength of the second type unit is a second wavelength in a range of greater than or equal to 520 nm and less than 650 nm. | 2022-08-25 |
20220272309 | PROJECTOR - A projector includes: a laser light source; a shaping section configured to shape a laser light emitted from the laser light source; and a scanning section configured to two-dimensionally scan, on a screen, a laser beam shaped by the shaping section. Under a situation where a distance from an optical emitting surface of the laser beam to the screen is constant, the laser light source and the shaping section are configured to perform two-dimensional scanning of the laser beam on the screen by using a tip of the laser beam corresponding to each of cross sections at a plurality of positions of a tapered portion of the laser beam from the scanning section to a beam waist of the laser beam. | 2022-08-25 |
20220272310 | PROJECTION-TYPE DISPLAY DEVICE AND METHOD FOR ADJUSTING A PROJECTED IMAGE - A projection-type display device includes: an operation signal detector, configured to receive an operation signal that indicates adjustment content of a projected image that was instructed by way of an operation unit; an installation state detector, configured to detect, as an installation state of the projection-type display device, a first state and a second state that is rotated 90 degrees from the first state around an axis that is parallel to an optical axis of a projection lens; and a controller that, upon detecting a signal that corresponds to a first direction by way of the operation signal detector in the first state and the second state, adjusts the projected image by causing the projected image to shift in the first direction, or adjusts the projected image by causing a correction-object site in the projected image to move in the first direction. | 2022-08-25 |
20220272311 | COMPUTER IMPLEMENTED METHOD AND SYSTEM FOR RETRIEVAL OF MULTI SPECTRAL BRDF PARAMETERS - A method for retrieval of multi spectral bidirectional reflectance distribution function (BRDF) parameters by using red-green-blue-depth (RGB-D) data includes capturing, by an RGB-D camera, at least one image of one or more objects in a scene. The captured at least one image of the one or more objects includes RGB-D data including color and geometry information of the objects. A processing unit reconstructs the captured at least one image of the one or more objects to one or more 3D reconstructions by using the RGB-D data. A deep neural network classifies the BRDF of a surface of the one or more objects based on the 3D reconstructions. The deep neural network includes an input layer, an output layer, and at least one hidden layer between the input layer and the output layer. The multi spectral BRDF parameters are retrieved by approximating the classified BRDF by using an iterative optimization method. | 2022-08-25 |
20220272312 | CROSS-VIEW IMAGE OPTIMIZING METHOD, APPARATUS, COMPUTER EQUIPMENT, AND READABLE STORAGE MEDIUM - Disclosed is a cross-view image optimizing method and apparatus, and a computer equipment and a readable storage medium. The method includes: acquiring a sample image and a pre-trained cross-view image generating model; generating an multi-dimensional cross-view image of the sample image by a multi-dimensional feature extracting module of the first generator to obtain dimension features and cross-view initial images at multiple dimensions; obtaining a multi-dimensional feature map with corresponding dimension features by the second generator; inputting the multi-dimensional feature map to a multi-channel attention module of the second generator for feature extraction and calculating a feature weight of each attention channel, obtaining attention feature images, attention images and feature weights in a preset number of the attention channels; and weighting and summing the attention images and the attention feature images of all the channels according to the feature weights, and obtaining a cross-view target image. | 2022-08-25 |
20220272313 | METHODS FOR AUTOMATIC REGISTRATION OF 3D IMAGE DATA - A method for automatic registration of 3D image data, captured by a 3D image capture system having an RGB camera and a depth camera, includes capturing 2D image data with the RGB camera at a first pose; capturing depth data with the depth camera at the first pose; performing an initial registration of the RGB camera to the depth camera; capturing 2D image data with the RGB camera at a second pose; capturing depth data at the second pose; and calculating an updated registration of the RGB camera to the depth camera. | 2022-08-25 |
20220272314 | PROJECTION SYSTEM FOR DIRECTING AND MONITORING ACTIVITY IN LARGE SCALE FACILITIES - A first projection device includes a first laser projector and a first measurement system. A second projection device includes a second laser projector and a second measurement system. The first projection device and the second projection device is interconnected with a controller. The controller is programmed with computer aided design data representative of a large scale work area and coordinates electronic interaction between the first projection device and the second projection device. The first projection device projects a first indicia that is detectable by the second measurement system and the second projection device projects a second indicia that is detectable by the first measurement system. The controller is adapted for determining relative position within three-dimensional coordinate system of the first projection device to the second projection device from the first indicia detected by the second measurement system and the second indicia detected by the first measurement system. | 2022-08-25 |
20220272315 | METHOD, SYSTEM AND COMPUTER READABLE STORAGE MEDIA FOR VISUALIZING A MAGNIFIED DENTAL TREATMENT SITE - A method, system and computer readable storage media for visualizing to a patient a magnified dental treatment site. By obtaining raw data from a stereo camera recording a dental treatment site, an enlarged, well-lit and spatially displayed view of the dental treatment site may be visualized in real time in augmented reality and virtual reality systems for diagnoses and treatment planning. | 2022-08-25 |
20220272316 | INTRAORAL SCANNING APPARATUS - A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates. | 2022-08-25 |
20220272317 | INTRAORAL SCANNING APPARATUS - A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates. | 2022-08-25 |
20220272318 | AUTOSTEREOSCOPIC P-POINT-OF-VIEW DISPLAY SCREEN FOR DISPLAYING AN AUTOSTEREOSCOPIC I-POINT-OF-VIEW IMAGE AND DISPLAY DEVICE INCLUDING SUCH A SCREEN - A display screen with P screen points-of-view, P being an integer greater than or equal to 6, displays an autostereoscopic image at I image points-of-view, I being an integer greater than or equal to 2, less than or equal to P/3. The screen includes a matrix ( | 2022-08-25 |
20220272319 | ADAPTIVE SHADING AND REPROJECTION - Disclosed herein includes a system, a method, and a device for rendering an image through adaptive reprojection. A first reprojection can be performed to generate a portion of a first image of a first view of a virtual space at a first rate. An amount of change from the first view to a second view of the virtual space can be determined. A portion of a second image of the second view of the virtual space can be determined to generate through a second reprojection. The second reprojection can be performed at a second rate to the portion of the second image according to the amount of change from the first view to the second view of the virtual space. | 2022-08-25 |
20220272320 | Display Device - A display device includes a view generator, for generating a plurality of input view numbers according to a plurality of reference parameters; a view curve modifier, coupled to the view generator, for generating a plurality of output view numbers according to the plurality of input view numbers and at least one S curve; a three dimensional (3D) image data sampling module, coupled to the view curve modifier, for adjusting image data of a plurality of pixels according to the plurality of output view numbers; and a display module, coupled to the 3D image data sampling module, for displaying at least one image according to the plurality of pixels and the image data. | 2022-08-25 |
20220272321 | METHOD, DEVICE, AND RECORDING MEDIUM FOR ENCODING/DECODING IMAGE USING REFERENCE PICTURE - Disclosed herein are a method, apparatus, and storage medium for image encoding/decoding using a reference picture. A reference picture list is configured for encoding/decoding of a target block. Upon configuring the reference picture list, a sequence parameter set and a slice header are used. A picture is divided into sub-pictures and/or slices, and reference picture lists are configured for the sub-pictures and/or slices resulting from division. Reference picture lists for slices may be related to each other, and a current reference picture and a future reference picture in one reference picture list may be used in an additional reference picture list. | 2022-08-25 |
20220272322 | Method and Apparatus of Residual Coding Selection for Lossless Coding Mode in Video Coding - A method and apparatus of video coding are disclosed. According to this method, input data related to a current block in a current picture are received at a video encoder side or compressed data comprising the current block are received at a video decoder side. A first syntax at a high level in a video bitstream regarding residual coding type is signaled at the encoder side or parsed at the decoder side. A target coding mode is determined for the current block based on information comprising a value of the first syntax. The current block is encoded at the encoder side or decoded at the decoder side according to the target coding mode. The high level may correspond to a slice header or a picture header. | 2022-08-25 |
20220272323 | SYSTEMS AND METHODS FOR INTER PREDICTION COMPENSATION - A video processing method includes: determining whether an inter predictor correction is enabled for a coding block; and when the inter predictor correction is enabled for the coding block, performing the inter predictor correction by: obtaining a plurality of predicted samples from a top boundary and a left boundary of a predicted block corresponding to the coding block; obtaining a plurality of reconstructed samples from top neighboring reconstructed samples and left neighboring reconstructed samples of the coding block; and deriving a corrected predicted block based on the plurality of the predicted samples, the plurality of the reconstructed samples and the predicted block. | 2022-08-25 |
20220272324 | SIGNALING FOR REFERENCE PICTURE RESAMPLING - A method of video processing includes determining, for a conversion between a current block of a video and a coded representation of the video, that a resolution of a current picture containing the current block and a reference picture used for the conversion are different, and performing the conversion based on the determining such that predicted values of a group of samples of the current block are generated using a horizontal or a vertical interpolation filter. | 2022-08-25 |
20220272325 | IMAGE AND VIDEO DATA PROCESSING METHOD AND SYSTEM - In a data processing method and system, an original frame is divided into a plurality of units, and an amplitude of each unit in an intermediate-frequency to high-frequency region is modulated with different boundary adjustment coefficients. If an amplitude of a current unit in an intermediate-frequency to high-frequency region is high, a boundary adjustment coefficient greater than 0 and less than 1 is used to decrease the amplitude in this region, thereby reducing an amount of data information and improving data compression efficiency. If an amplitude of a current unit in an intermediate-frequency to high-frequency region is low, a boundary adjustment coefficient greater than 1 is used to increase the amplitude in this region to avoid loss of details. In data decompression, boundary compensation is performed for the amplitude of each unit in the intermediate-frequency to high-frequency region with a boundary compensation coefficient corresponding to the boundary adjustment coefficient. | 2022-08-25 |
20220272326 | MOTION COMPENSATED BI-PREDICTION BASED ON LOCAL ILLUMINATION COMPENSATION - Systems, methods, and instrumentalities are described herein for calculating local illumination compensation (LIC) parameters for bi-predicted coding unit (CU). The LIC parameters may be used to generate adjusted samples for the current CU and to address local illumination changes that may exist among temporal neighboring pictures. LIC parameters may be calculated based on bi-predicted reference template samples and template samples for a current CU. Bi-predicted reference template samples may be generated based on reference template samples neighboring temporal reference CUs. For example, the bi-predicted reference template samples may be generated based on averaging the reference template samples. The reference template samples may correspond to template samples for the current CU. A CU may be or may include a coding block and/or a sub-block that may be derived by dividing the coding block. | 2022-08-25 |
20220272327 | METHOD AND DEVICE FOR DECODING IMAGES USING CCLM PREDICTION IN IMAGE CODING SYSTEM - An image decoding method performed by a decoding device according to the present document comprises: a step for deriving the number of samples of upper peripheral chroma samples and left peripheral chroma samples of a current chroma block on the basis of a specific value and the width and height of the current chroma block; a step for deriving said number of upper peripheral chroma samples and said number of left peripheral chroma samples; and a step for deriving CCLM parameters on the basis of the upper peripheral chroma samples, the left peripheral chroma samples, and down-sampled peripheral luma samples, wherein, when the specific value is derived as 2 and the width and the height of the current chroma block are larger than the specific value, the number of samples is derived as the specific value. | 2022-08-25 |
20220272328 | TEMPORAL MOTION DATA CANDIDATE DERIVATION IN VIDEO CODING - A method for derivation of a temporal motion data (TMD) candidate for a prediction unit (PU) in video encoding or video decoding is provided. The derived TMD candidate is for inclusion in an inter-prediction candidate list for the PU. The method includes determining a primary TMD position relative to a co-located PU in a co-located largest coding unit (LCU), wherein the co-located PU is a block in a reference picture having a same size, shape, and coordinates as the PU, and selecting at least some motion data of a secondary TMD position as the TMD candidate when the primary TMD position is in a bottom neighboring LCU or in a bottom right neighboring LCU of the co-located LCU, wherein the secondary TMD position is determined relative to the co-located PU. | 2022-08-25 |
20220272329 | IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR DETERMINING PREDICTION MODE OF CHROMA BLOCK BY REFERRING TO LUMA SAMPLE POSITION, AND METHOD FOR TRANSMITTING BITSTREAM - An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise identifying a current chroma block by splitting an image, identifying whether a matrix based intra prediction mode applies to a first luma sample position corresponding to the current chroma block, identifying whether a predetermined prediction mode applies to a second luma sample position corresponding to the current chroma block, based on the matrix based intra prediction mode doing not apply, and determining an intra prediction mode candidate of the current chroma block based on an intra prediction mode applying to a third luma sample position corresponding to the current chroma block, based on the predetermined prediction mode doing not apply. | 2022-08-25 |
20220272330 | CALCULATION FOR MULTIPLE CODING TOOLS - A method of video processing includes making a determination, fora conversion between a current video block of a video and a coded representation of the video, of an affine merge candidate selectively according to a rule; and performing the conversion according to the determination. The rule specifies how the affine merge candidate is calculated without use of a log 2(X) operation where X is equal to or less than zero. The affine merge candidate is a motion candidate derived from neighboring affine coded video blocks. | 2022-08-25 |
20220272331 | METHOD AND APPARATUS FOR DECODING USING REFERENCE LINE INDEX BASED ON INTRA PREDICTION MODE - Aspects of the disclosure provide method and apparatus for video coding. In some examples, an apparatus includes receiving circuitry and processing circuitry. The processing circuitry selects a reference line from a plurality of potential reference lines and selects an intra prediction mode from a set of potential intra prediction modes that is associated with the reference line. The processing circuitry encodes a block according to the intra prediction mode and at least one reference sample in the reference line. The processing circuitry further generates prediction information of the block. Inclusion of an indication of a reference line index of the reference line in the prediction information is based on the intra prediction mode. | 2022-08-25 |
20220272332 | Method and Apparatus of Cross-Component Adaptive Loop Filtering with Virtual Boundary for Video Coding - Methods and apparatus for loop-filter processing of reconstructed video are disclosed. According to this method, if a loop-filter is disallowed for a target boundary, the target loop filter is disabled at top, bottom, left and right of the target boundary. According to another method, CC-ALF (cross-component adaptive loop filter) shape is changed across a virtual boundary. According to yet another method, CC-ALF and luma ALF handle unavailable samples in a same way. | 2022-08-25 |
20220272333 | IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR PERFORMING DEBLOCKING FILTERING ACCORDING TO WHETHER PALETTE MODE IS APPLIED, AND METHOD FOR TRANSMITTING BITSTREAM - An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise generating a reconstructed block for a current block, determining a target boundary for the reconstructed block, determining a first target block and a second target block based on a sample adjacent to the target boundary, and performing deblocking filtering on the sample adjacent to the target boundary, based on a prediction mode of at least one of the first target block or the second target block. In this case, a value of the sample adjacent to the target boundary may not be changed based on the prediction mode of at least one of the first target block or the second target block being a palette mode. | 2022-08-25 |
20220272334 | SYSTEM AND METHOD FOR VIDEO CODING - An encoder includes circuitry and memory. The circuitry, in operation, generates a first coefficient value by applying a CCALF (cross component adaptive loop filtering) process to a first reconstructed image sample of a luma component. The circuitry generates a second coefficient value by applying an ALF (adaptive loop filtering) process to a second reconstructed image sample of a chroma component. The circuitry generates a third coefficient value by adding the first coefficient value to the second coefficient value, and encodes a third reconstructed image sample of the chroma component using the third coefficient value. In the CCALF process, in response to a coordinate of the second reconstructed image sample being (x, y), coordinates of the first reconstructed image samples are (2x, 2y−1), (2x−1, 2y), (2x, 2y), (2x+1, 2y), (2x−1, 2y+1), (2x, 2y+1), (2x+1, 2y+1), and (2x, 2y+2). | 2022-08-25 |
20220272335 | CROSS-COMPONENT ADAPTIVE LOOP FILTER - A method of video processing is described. The method includes determining, for a conversion between a current video unit of a video including one or more video blocks and a bitstream representation of the video, a padding process used for padding unavailable samples during application of a cross-component adaptive loop filtering (CC-ALF) tool to at least some video blocks of the current video unit according to a rule; and performing the conversion based on the determining, and wherein the rule specifies that the padding process is also used for padding unavailable samples during application of an adaptive loop filtering (ALF) tool to one or more video blocks of the current video unit. | 2022-08-25 |
20220272336 | 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. | 2022-08-25 |
20220272337 | EFFICIENT SUB-PICTURE EXTRACTION - Sub-picture extraction is rendered less complex by providing each slice with start position information which indicates a starting position from which onwards the picture is, along a coding path, encoded into the respective slice, relative to an onset position at which the coding path starts traversing a segment the starting position is located in. Alternatively or additionally, sub-picture extraction processes are treated like choosing one layer out of a multi-layer datastream. | 2022-08-25 |
20220272338 | IMAGE ENCODING/DECODING METHOD AND DEVICE USING ADAPTIVE SIZE LIMITING OF CHROMA BLOCK AND BITSTREAM TRANSMISSION METHOD - An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus includes determining a splitting structure of a current block composed of chroma components, determining a splitting type of the current block based on the splitting structure, obtaining a plurality of lower-layer blocks by splitting the current block based on the splitting type, and decoding the lower-layer blocks based on a prediction mode of the lower-layer blocks. | 2022-08-25 |
20220272339 | VIDEO CODING METHOD AND DEVICE, VIDEO DECODING METHOD AND DEVICE - Provided are an encoding method and apparatus, and a decoding method and apparatus for adaptively selecting a context model used to entropy-encode and entropy-decode a syntax element, based on various shapes of coding units. The image decoding method includes: determining a context model based on block shape information including at least one of a shape, direction, width, ratio of width and height, or size of a coding unit; obtaining, from a bitstream based on the context model, information about a split shape mode for splitting the coding unit; and determining a split shape mode of the coding unit, based on the information about the split shape mode. | 2022-08-25 |
20220272340 | FLEXIBLE PICTURE PARTITIONING - Systems and methods may provide flexible picture partitioning, a method includes receiving a bitstream, that includes a picture, the picture partitioned into a plurality of coding tree units (CTUs), wherein at least one row or column of CTUs, among the plurality of CTUs of the picture, that is adjacent to a boundary of the picture has a size dimension that is smaller than a corresponding size dimension of each CTU among the plurality of CTUs that is not adjacent to any boundary of the picture; and encoding the bitstream based on the plurality of CTUs, wherein the at least one row or column of CTUs includes a first CTU row or a first CTU column of the picture that is adjacent to a top boundary or left boundary of the picture, respectively. | 2022-08-25 |
20220272341 | DECODING DEVICE, DECODING METHOD, AND STORAGE MEDIUM - A decoding device includes one or more memories; and one or more processors coupled to the one or more memories and the one or more processors configured to acquire a division shape of a block in a non-rectangular prediction unit based on positional information of one division node of two division nodes at which a partition that divides a block in a coding unit included in coded data into the block in the non-rectangular prediction unit intersects a boundary of the block in the coding unit and an angle of an intra-prediction mode used to perform intra-prediction in the block in the non-rectangular prediction unit, and perform intra-prediction of the block in the non-rectangular prediction unit obtained by dividing the block in the coding unit based on the division shape using the intra-prediction mode. | 2022-08-25 |
20220272342 | QUANTIZATION OF RESIDUALS IN VIDEO CODING - A method of decoding an encoded signal is provided, said encoded signal received within a bitstream, the method comprising: receiving a set of quantized data associated with the encoded signal; determining at least one dequantization parameter; and dequantizing the quantized data based at least in part of the at least one dequantization parameter. | 2022-08-25 |
20220272343 | ENCODING SEQUENCE ENCODING METHOD AND DEVICE THEREOF, AND DECODING METHOD AND DEVICE THEREOF - Provided is a video decoding method including obtaining encoding order information indicating whether an encoding order of a first block and a second block that are adjacent to each other is changed; determining the encoding order of the first block and the second block, based on the encoding order information; and decoding the first block and the second block, according to the determined encoding order. | 2022-08-25 |
20220272344 | SYSTEMS AND METHODS FOR JOINT COLOR CHANNEL ENTROPY ENCODING WITH POSITIVE RECONSTRUCTION ERROR - A method includes receiving an image frame comprising pixels, wherein each pixel comprises n color channels, generating, by a separate color channel quantization branch for each of the n color channels configured to guarantee a non-negative reconstruction error, a first sample set of quantized indices based on color values of residues for a first particular pixel in the image frame, wherein the first sample set corresponds to a first n-tuple, and generating, by an entropy encoder, an entropy encoding for the first particular pixel based on data that maps indices to n-tuples of quantized indices, wherein the first n-tuple is mapped to a first index. | 2022-08-25 |
20220272345 | IMAGE ENCODING AND DECODING, VIDEO ENCODING AND DECODING: METHODS, SYSTEMS AND TRAINING METHODS - Lossy or lossless compression and transmission, comprising the steps of: (i) receiving an input image; (ii) encoding it using an encoder trained neural network, to produce a y latent representation; (iii) encoding the y latent representation using a hyperencoder trained neural network, to produce a z hyperlatent representation; (iv) quantizing the z hyperlatent representation using a predetermined entropy parameter to produce a quantized z hyperlatent representation; (v) entropy encoding the quantized z hyperlatent representation into a first bitstream, using predetermined entropy parameters; (vi) processing the quantized z hyperlatent representation using a hyperdecoder trained neural network to obtain a location entropy parameter μ | 2022-08-25 |
20220272346 | IMAGE ENCODING/DECODING METHOD AND DEVICE FOR PERFORMING PROF, AND METHOD FOR TRANSMITTING BITSTREAM - An image encoding/decoding method and apparatus are provided. An image decoding method according to the present disclosure is performed by an image decoding apparatus. The image decoding method comprises deriving a prediction sample of a current block based on motion information of the current block, deriving a reference picture resampling (RPR) condition for the current block, determining whether prediction refinement with optical flow (PROF) applies to the current block based on the RPR condition, and deriving a refined prediction sample for the current block by applying PROF to the current block. | 2022-08-25 |
20220272347 | JOINT CODING OF CHROMA RESIDUAL AND FILTERING IN VIDEO PROCESSING - An example method of video processing includes determining, for a conversion between a chroma block of a video and a bitstream representation of the video, applicability of a deblocking filter process to at least some samples at an edge of the chroma block based on a mode of joint coding of chroma residuals for the chroma block. The method also includes performing the conversion based on the determining. | 2022-08-25 |
20220272348 | CROSS-COMPONENT ADAPTIVE LOOP FILTER USING LUMA DIFFERENCES - A method of video processing includes determining, for a conversion between a video region of a video and a bitstream representation of the video, to correct chroma samples of the video region using a cross-component adaptive loop filter (CC-ALF) process based on filtering of luma sample differences; and performing the conversion based on the determining. | 2022-08-25 |
20220272349 | IMAGE/VIDEO CODING METHOD AND DEVICE - A video decoding method performed by a video decoding device according to the present document comprises the steps of: acquiring image information from a bitstream, the image information including a picture header associated with the current picture including a plurality of slices; parsing, from the picture header, a first flag indicating whether information necessary for an inter-prediction operation for a decoding process is present in the picture header; parsing, from the picture header, a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; and generating prediction samples by performing at least one of intra-prediction or inter-prediction for the slices in the current picture on the basis of the first flag or the second flag. | 2022-08-25 |
20220272350 | SLICE TYPE-BASED IMAGE/VIDEO CODING METHOD AND APPARATUS - A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: obtaining image information from a bitstream, wherein the image information includes a picture header associated with a current picture, and the current picture includes a plurality of slices; parsing at least one of a first flag and a second flag from the picture header; generating prediction samples by performing at least one of intra prediction and inter prediction on a current block in the current picture on the basis of at least one of the first flag and the second flag; generating reconstructed samples on the basis of the prediction samples; and generating a reconstructed picture on the basis of the reconstructed samples. | 2022-08-25 |
20220272351 | CCLM-BASED INTRA-PREDICTION METHOD AND DEVICE - A method for decoding a picture based on a cross-component linear model (CCLM) mode includes deriving neighboring luma reference samples of a luma block, deriving down-sampled neighboring luma reference samples, deriving a linear model parameter based on the down-sampled neighboring luma reference samples and the neighboring chroma reference samples, where the neighboring luma reference samples includes top neighboring luma reference samples, and left neighboring luma reference samples, and where when the top boundary of the luma block overlaps with a boundary of a coding tree unit (CTU), the number of the top neighboring luma reference samples used for deriving the down-sampled neighboring luma reference samples among the neighboring luma reference samples is less than that of the left neighboring luma reference samples used for deriving the down-sampled neighboring luma reference samples. | 2022-08-25 |
20220272352 | IMAGE ENCODING AND DECODING APPARATUS AND METHOD USING ARTIFICIAL INTELLIGENCE - An image decoding method using artificial intelligence (AI), including obtaining feature data of a current optical flow and feature data of current differential data from a bitstream corresponding to a current image; obtaining the current optical flow by applying the feature data of the current optical flow to a neural-network-based first decoder; applying at least one of the feature data of the current optical flow and feature data of a previous optical flow to a first preprocessing neural network; obtain a first concatenation result by concatenating feature data obtained from the first preprocessing neural network with the feature data of the current differential data; obtaining the current differential data by applying the first concatenation result to a neural-network-based second decoder; and reconstructing the current image using the current differential data and a current predicted image generated from a previous reconstructed image based on the current optical flow. | 2022-08-25 |
20220272353 | DOWNSAMPLING FILTER TYPE FOR CHROMA BLENDING MASK GENERATION - An example method of video processing includes performing a conversion between a block of a chroma component of a video and a bitstream representation of the video using a partitioning mode coding tool in which a final prediction of the chroma block is determined by blending predictions of the chroma block using weights that are based on the partitions. During the conversion, the weights are determined based on a type of chroma sample locations in the chroma component of the block. | 2022-08-25 |
20220272354 | SYMMETRIC MOTION VECTOR DIFFERENCE CODING - Symmetric motion vector difference coding is described. One example video processing method includes determining, for a conversion between a block of a current picture of video and a bitstream representation of the block, whether a symmetric motion vector difference (SMVD) mode is allowable for the block, wherein whether the SMVD mode is allowable depends on a derivation process of two target reference pictures of the current picture, which includes a first step for searching a forward target reference picture in the reference picture list 0 and searching a backward target reference picture in the reference picture list 1, and a second step for searching a backward target reference picture in the reference picture list 0 and searching a forward target reference picture in the reference picture list 1, outputs of the first step and the second step being independent of each other; and performing the conversion based on the determination. | 2022-08-25 |
20220272355 | MACHINE LEARNING BASED FLOW DETERMINATION FOR VIDEO CODING - Systems and techniques are described herein for processing video data. In some aspects, a method can include obtain, by a machine learning system, input video data. The input video data includes one or more luminance components for a current frame. The method can include determining, by the machine learning system, motion information for the luminance component(s) of the current frame and motion information for one or more chrominance components of the current frame using the luminance component(s) for the current frame. In some cases, the method can include determining the motion information for the luminance component(s) based on the luma component(s) of the current frame and at least one reconstructed luma component of a previous frame. In some cases, the method can further include determining the motion information for the chrominance component(s) of the current frame using the motion information determined for the luminance component(s) of the current frame. | 2022-08-25 |
20220272356 | LUMA TO CHROMA QUANTIZATION PARAMETER TABLE SIGNALING - Compression technology comprises deriving chroma quantization parameter (Qpc) based on luma Qp using luma-to-chroma Qp mapping table. Such a table may be shared by the encoder and the decoder. However, in some cases, signaling such a table in the data stream instead of having it fixed by a standard may be advantageous. The syntax used to encode, signal and decode this table has a cost in terms of bitrate. The present principles propose to signaling of a luma-to-chroma mapping table in the data stream according to different embodiments. | 2022-08-25 |
20220272357 | IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM STORING BITSTREAM - An image encoding/decoding method and apparatus for performing template matching-based intra prediction are provided. An image decoding method may comprise deriving a first intra-prediction mode for a current block, generating a first intra-prediction block corresponding to the first intra-prediction mode, deriving a second intra-prediction mode for the current block, generating a second intra-prediction block corresponding to the second intra-prediction mode, and generating a final intra-prediction block by using a weighted sum of the first intra-prediction block and the second intra-prediction block. | 2022-08-25 |
20220272358 | METHODS AND APPARATUSES OF ENCODING/DECODING INTRA PREDICTION MODE USING CANDIDATE INTRA PREDICTION MODES - A method and an apparatus of encoding/decoding intra prediction mode using a plurality of candidate intra prediction modes are disclosed. The method includes deriving three candidate intra prediction modes about a current block and deriving an intra prediction mode of the current block. | 2022-08-25 |
20220272359 | BLOCK PARTITIONING METHODS FOR VIDEO CODING - The present disclosure provides systems and methods for processing video content. The method can include: partitioning, along a partitioning edge, a plurality of blocks associated with a picture into a first partition and a second partition; performing inter prediction on the plurality of blocks, to generate a first prediction signal for the first partition and a second prediction signal for the second partition; and blending the first and second prediction signals for edge blocks associated with the partitioning edge. | 2022-08-25 |
20220272360 | METHOD AND APPARATUS IN VIDEO CODING WITH FLEXIBLE CODING ORDER - An apparatus includes processing circuitry, which determines a block vector that points to a reference block in a same picture as a current block in an intra block copy mode. The current block is one of a plurality of coding blocks in a coding tree block (CTB) with a right to left coding order being allowed within the CTB. The processing circuitry checks that two corner samples of the reference block have been reconstructed based on first outputs from a derivation process for block availability. The processing circuitry checks that a non corner sample of the reference block has been reconstructed based on a second output from the derivation process. The processing circuitry encodes the current block based on reconstructed samples of the reference block after a determination that the two corner samples of the reference block and the non corner sample of the reference block have been reconstructed. | 2022-08-25 |
20220272361 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE SIGNAL - A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter. | 2022-08-25 |
20220272362 | SYSTEMS AND METHODS FOR APPLYING DEBLOCKING FILTERS TO RECONSTRUCTED VIDEO DATA - This disclosure relates to video coding and more particularly to techniques for performing deblocking of reconstructed video data. According to an aspect of an invention, reconstructed video data having a 4:2:2 chroma format is received and for a four line decision segment corresponding to a vertical deblocking boundary for a chroma component of the video data, a gradient value is computed using samples included in the first and fourth lines. | 2022-08-25 |
20220272363 | SYSTEMS AND METHODS FOR LINER MODEL DERIVATION - The present disclosure provides a video data processing method. The method includes receiving a bitstream; decoding an index associated with a coding unit based on the bitstream, the index indicating a selection mode among at least four selection modes; determining four samples based on the index; determining two parameters based on the four samples; determining predicted samples of the coding unit based on the two parameters; and decoding the coding unit based on the predicted samples. | 2022-08-25 |
20220272364 | ENCODER, DECODER, ENCODING METHOD, DECODING METHOD, AND MEDIUM - An encoder includes: memory; and circuitry coupled to the memory and configured to generate an encoded bitstream. In the encoder, when a multi-layer structure is to be included in the encoded bitstream to be generated, the circuitry generates the encoded bitstream by including in the encoded bitstream (i) a sequence parameter set that refers to a video parameter set and (ii) a network abstraction layer (NAL) unit having a layer identification (ID) greater than zero in the multi-layer structure, and when the multi-layer structure is not to be included in the encoded bitstream to be generated, the circuitry generates the encoded bitstream by including in the encoded bitstream a sequence parameter set that does not refer to the video parameter set. | 2022-08-25 |
20220272365 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - There is provided methods, apparatuses and computer program products for video coding and decoding. A first part of a first coded video representation is decoded, and information on decoding a second coded video representation is received and parsed. The coded second representation differs from the first coded video representation in chroma format, sample bit depth, color gamut and/or spatial resolution, and the information indicates if the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as reference pictures. If the information indicates that the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as a prediction reference, decoded picture(s) of the first part is/are processed into processed decoded picture(s) by resampling and/or sample value scaling; and decoding a second part of a second video representation using said processed decoded picture(s) as reference pictures. | 2022-08-25 |
20220272366 | SCALABLE CODING OF VIDEO SEQUENCES USING TONE MAPPING AND DIFFERENT COLOR GAMUTS - A Scalable Video Coding (SVC) process is provided for scalable video coding that takes into account color gamut primaries along with spatial resolution. The process provides for re-sampling using video color data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to enable improved encoding and decoding in an enhancement layer (EL) or higher layers taking into account color conversion between layers. Examples of applicable SVC include MPEG-4 Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC). With the SVC process, video data expressed in one color gamut space can be used for prediction in encoding with a possibly different color space, and accommodation for different spatial resolution and bit-depth can be made as well. | 2022-08-25 |
20220272367 | BUFFERS FOR VIDEO CODING IN PALETTE MODE - An example apparatus includes a first line buffer and a second line buffer, where each memory location in the first line buffer and the second line buffer corresponds to a row or column of a palette token block. The first line buffer may store two of the neighboring palette token values (e.g., above and left palette token values), and the second line buffer may store one of the neighboring palette token value (e.g., above-left). As a video coder is coding palette token values, the video coder may shift values stored in the first line buffer to the overwrite a memory location in the second line buffer, and overwrite values stored in the first line buffer based in part on the row or column of the palette token block to which the memory locations in the first and second line buffer correspond. | 2022-08-25 |
20220272368 | METHOD AND APPARATUS FOR ENCODING AND DECODING USING SELECTIVE INFORMATION SHARING BETWEEN CHANNELS - Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Coding decision information of a representative channel of a target block is shared as coding decision information of a target channel of the target block, and decoding of the target block is performed using the coding decision information of the target channel. Since the coding decision information of the representative channel is shared with an additional channel, repeated signaling of identical coding decision information may be prevented. By means of this prevention, the efficiency of encoding and decoding of the target block or the like may be improved. | 2022-08-25 |
20220272369 | BLOCK PARTITIONING AT PICTURE BOUNDARIES - A method for video encoding includes determining whether a part of a current block is outside a current picture that is being encoded, and determining whether one of a binary split, a ternary split, or a quaternary split is allowed for the current block in response to the part of the current block being outside the current picture. The method also includes, in response to none of the binary split, the ternary split, and the quaternary split being allowed, determining whether a partition from an implicit binary split is across a virtual pipeline data unit boundary, and applying the implicit binary split to the current block in response to the partition from the implicit binary split not being across the virtual pipeline data unit boundary. | 2022-08-25 |
20220272370 | METHOD AND DEVICE FOR ENCODING/DECODING IMAGE USING SUB-PICTURE, AND BIT STREAM TRANSMISSION METHOD - An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise obtaining, from a picture parameter set, a first signaling flag specifying whether an identifier of a subpicture splitting a current picture is signaled using the picture parameter set, obtaining identifier information of the subpicture from the picture parameter set, based on the first signaling flag specifying that the identifier of the subpicture is signaled using the picture parameter set, and decoding the current picture by decoding a current subpicture identified based on the identifier information. | 2022-08-25 |
20220272371 | METHOD OF CODING AND DECODING IMAGES, CODING AND DECODING DEVICE AND COMPUTER PROGRAMS CORRESPONDING THERETO - 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. | 2022-08-25 |
20220272372 | ARTIFICIAL INTELLIGENCE-BASED IMAGE ENCODING AND DECODING APPARATUS AND METHOD - A method of reconstructing an optical flow by using artificial intelligence (AI), including obtaining, from a bitstream, feature data of a current residual optical flow for a current image; obtaining the current residual optical flow by applying the feature data of the current residual optical flow to a neural-network-based first decoder; obtaining a current predicted optical flow based on at least one of a previous optical flow, feature data of the previous optical flow, and feature data of a previous residual optical flow; and reconstructing a current optical flow based on the current residual optical flow and the current predicted optical flow. | 2022-08-25 |
20220272373 | METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO SIGNAL - A method of decoding a video signal according to the present invention may include: determining whether or not change in brightness is present between a current video including a current block and a reference video of the current video; when it is determined that change in brightness is present between the current video and the reference video, determining weight prediction parameter candidates of the current block; determining a weight prediction parameter of the current block on the basis of index information specifying any of the weight prediction parameter candidates; and performing prediction for the current block on the basis of the weight prediction parameter. | 2022-08-25 |
20220272374 | AFFINE PREDICTION METHOD AND RELATED DEVICES - The present provides an affine prediction method and related devices. The method may include: dividing a current coding block into multiple sub-blocks, and determining an initial prediction value of all pixels in each of the sub-blocks; dividing each of the sub-blocks into multiple fraction blocks, wherein at least one of the fraction blocks comprises at least two integer pixels; determining a motion vector difference and a gradient of each of the fraction blocks; calculating a pixel compensation value of each of the fraction blocks based on the motion vector difference value and the gradient; taking the pixel compensation value of each of the fraction blocks as a pixel compensation value of all pixels in each of the fraction blocks; and calculating a final prediction value of each pixel in the current coding block by the initial prediction value of each pixel and the pixel compensation value. | 2022-08-25 |
20220272375 | OVERLAPPED BLOCK MOTION COMPENSATION FOR INTER PREDICTION - A method for video encoding is provided. The method includes: partitioning a frame of video data into a plurality of blocks; obtaining a current prediction of a current block of the plurality of blocks using one or more motion vectors of the current block; obtaining one or more collocated predictions of the current block using one or more motion vectors of one or more neighbor blocks of the current block in respective one or more blending areas, where each of the one or more blending areas is at least part of the current block and adjustable based at least on the partitioning; and obtaining a combined prediction of the current block by combing the current prediction with the one or more collocated predictions. | 2022-08-25 |
20220272376 | CONSTRAINTS FOR USAGE OF UPDATED MOTION INFORMATION - Embodiments of the present disclosure relates to constraints for usage of updated motion information. A method for video processing is provided, including: determining original motion information associated with a current block; generating updated motion information based on specific prediction mode; and performing, based on the updated motion information, a conversion between the current block and a bitstream representation of a video data including the current block, wherein the specific prediction mode includes one or more of bi-directional optical flow (BIO) refinement, a decoder-side motion vector refinement (DMVR), frame-rate up conversion (FRUC) techniques or a template matching technique. | 2022-08-25 |
20220272377 | MOTION CANDIDATE DERIVATION BASED ON SPATIAL NEIGHBORING BLOCK IN SUB-BLOCK MOTION VECTOR PREDICTION - Devices, systems and methods for the simplification of sub-block motion candidate lists for video coding are described. In a representative aspect, a method for video processing includes determining, during a conversion between a current block and a bitstream representation of the current block, a temporal motion vector prediction candidate for a sub-block of the current block. The temporal motion vector prediction candidate is completely determined based on K neighboring blocks of the current block, K being a positive integer. The method also includes performing the conversion based on the temporal motion vector prediction candidate for the sub-block. | 2022-08-25 |
20220272378 | SYSTEMS AND METHODS FOR PERFORMING AN ADAPTIVE RESOLUTION CHANGE IN VIDEO CODING - This disclosure relates to video coding and more particularly to techniques for an adaptive resolution change. According to an aspect of an invention, a motion compensation interpolation filter is selected based on a value of a scaling factor, wherein the motion compensation interpolation filter is specified by 16 fractional sample positions and 8 interpolation filter coefficients corresponding to each of the fractional sample position. | 2022-08-25 |
20220272379 | Intra Prediction Method of Chrominance Block Using Luminance Sample, and Apparatus Using Same - Disclosed are an intra prediction method of a chrominance block using a luminance sample and an apparatus using the same. An image decoding method comprises the steps of calculating an intra prediction mode of a chrominance block on the basis of an LM mapping table when the chrominance block uses an LM; and generating a prediction block for the chrominance block on the basis of the calculated intra prediction mode of the chrominance block. When intra prediction mode information of chrominance blocks are decoded, mutually different tables are used depending on whether or not an LM is used, so that encoding and decoding can be performed without an unnecessary waste of bits. | 2022-08-25 |
20220272380 | METHOD AND DEVICE FOR CODING A DIGITAL HOLOGRAM SEQUENCE - Disclosed is a method and a device for coding a sequence including first and second digital holograms representing respective scenes, the digital holograms being represented by a set of wavelets each defined by a multiplet of coordinates in multidimensional space. The first and second holograms are represented by first and second coefficients respectively associated with wavelets. The coding method includes the following steps: for each second coefficient, determining a remainder by a difference between the second coefficient concerned, associated with a first wavelet defined by a given multiplet, and the first coefficient) associated with a second wavelet defined by a multiplet having as its image the multiplet by a transform in the multidimenisonal space; coding the determined remainders. The transform is determined by analysis of variation between the first scene represented by the first digital hologram and the second scene represented by the second digital hologram. | 2022-08-25 |
20220272381 | PARALLEL ENCODING FOR POINT CLOUD COMPRESSION - Aspects of the disclosure provide methods, apparatuses, and a non-transitory computer-readable medium for point cloud compression and decompression. In a method, an octree partitioning structure for a bounding box of a point cloud is determined. Whether parallel encoding is to be performed on occupancy codes of nodes in a range of one or more partitioning depths in the octree partitioning structure is determined. The parallel encoding on the occupancy codes of the nodes is performed in response to the parallel encoding being determined to be performed on the occupancy codes of the nodes in the range of the one or more partitioning depths in the octree partitioning structure. A coded bitstream is generated based on the encoded occupancy codes of the nodes. The coded bitstream includes syntax information that indicates whether parallel decoding is to be performed on the occupancy codes of the nodes in the range. | 2022-08-25 |
20220272382 | Significance Map Encoding and Decoding Using Partition Selection - Methods of encoding and decoding for video data are describe in which significance maps are encoded and decoded using non-spatially-uniform partitioning of the map into parts, wherein the bit positions within each part are associated with a given context. Example partition sets and processes for selecting from amongst predetermined partition sets and communicating the selection to the decoder are described. | 2022-08-25 |
20220272383 | IMAGE CODING METHOD BASED ON SECONDARY TRANSFORM AND DEVICE THEREFOR - An image decoding method according to the present specification comprises the steps of: deriving transform coefficients through inverse quantization on the basis of quantized transform coefficient for a target block; deriving modified transform coefficients on the basis of inverse reduced secondary transform (RST) of the transform coefficients; and generating a reconstructed picture on the basis of residual samples for the target block on the basis of an inverse primary transform of the modified transform coefficients, wherein the step of deriving the modified transform coefficients is characterized in deriving 16 modified transform coefficients by applying a transform kernel matrix to 8 transform coefficients in a 4×4 region of the target block. | 2022-08-25 |
20220272384 | IMAGE COMPRESSION - The invention provides methods that improve image compression and/or quality within the JPEG process by using a low-pass filter to remove high frequency components from image data, which removes blocking artifacts. Preferred embodiments apply the low-pass filter to the Chroma components after decompression prior to conversion into RGB color space. | 2022-08-25 |
20220272385 | IMAGE DECODING METHOD AND DEVICE IN ACCORDANCE WITH BLOCK SPLIT STRUCTURE IN IMAGE CODING SYSTEM - An image decoding method performed by means of a decoding device according to the present invention comprises the steps of: obtaining first split information relating to a first target block; if the first split information indicates that the first target block is to be split, splitting the first target block into first sub-blocks; obtaining MPT split information relating to a second target block which is one of the first sub-blocks of the first target block; splitting the second target block into second sub-blocks on the basis of the MPT split information; and decoding the second sub-blocks, wherein the second sub-blocks are non-square blocks. | 2022-08-25 |
20220272386 | METHOD AND DEVICE FOR SIGNALING INFORMATION RELATING TO SLICE TYPE IN PICTURE HEADER IN IMAGE/VIDEO CODING SYSTEM - A video decoding method performed by a video decoding device according to the present document may comprise the steps of: acquiring image information from a bitstream, wherein the image information includes a picture header associated with a current picture, and the current picture includes multiple slices; based on the picture header, acquiring at least one of a first flag indicating whether information required for an inter-prediction operation exists in the picture header and a second flag indicating whether information required for an intra-prediction operation exists in the picture header; based on at least one of the first flag and the second flag, generating prediction samples. | 2022-08-25 |
20220272387 | CONDITIONALLY PARSED EXTENSION SYNTAX FOR HEVC EXTENSION PROCESSING - A system for signaling extension functions used in decoding a sequence including a plurality of pictures, each picture processed at least in part according to a picture parameter set is disclosed. An extension presence signaling flag is read and used to determine whether flags signaling the performance of extension functions are to be read. The flags are only read if indicated by the extension presence signaling flag. | 2022-08-25 |
20220272388 | IMAGE DECODING METHOD USING LOSSLESS CODING IN IMAGE CODING SYSTEM AND APPARATUS THEREFOR - According to a disclosure of the present document, coding efficiency and complexity of residual coding may be improved on the basis of a determination regarding whether or not lossless coding is used. | 2022-08-25 |
20220272389 | CROSS-COMPONENT ADAPTIVE LOOP FILTER - A method of video processing includes making a determination for a conversion between a video region of a video and a bitstream representation of the video to use a cross-component adaptive loop filtering (CC-ALF) tool for refining chroma samples values using luma sample values; and performing the conversion based on the determination, wherein the refining includes correcting the chroma sample values using a final refinement that is a further refinement of a first refinement value determined by selectively filtering the luma sample values. | 2022-08-25 |
20220272390 | VIDEO SIGNAL DECODING/ENCODING METHOD AND APPARATUS THEREOF - There is provided a video signal decoding method. The method comprises decoding block division information of a current block, dividing the current block into a plurality of sub blocks based on the block division information, and decoding the sub blocks. | 2022-08-25 |
20220272391 | MEDIA PROCESSING METHOD - Provided is a media processing method. The method is used for uploading a function provided by a user or a third party and obtaining media processing parameters provided by the user. The method includes the following steps: receiving the description information of the media processing and determining whether a function that fulfills the requirement of the description information exists in a system; in a case where the function that fulfills the requirement of the description information exists, selecting the function that fulfills the requirement of the description information from the system; and in a case where the function that fulfills the requirement of the description information does not exist, selecting the function from the system according to the priority or selecting the function that fulfills the requirement of the description information from outside the system. | 2022-08-25 |
20220272392 | BURST TRAFFIC PROCESSING METHOD, COMPUTER DEVICE AND READABLE STORAGE MEDIUM - The present disclosure describes techniques of processing burst traffic. In the present application, when a service request is received, it is determined whether there is service data corresponding to the service request in a buffer unit. If so, the corresponding service data in the buffer unit is directly sent to a client computer so as to reduce access pressure of a second service layer; if not, determining whether a request frequency associated with the service request is greater than a frequency threshold; when the request frequency of the service request is greater than the frequency threshold, it indicates that the second service layer of the service type corresponding to the service request reaches the upper limit of capacity. In this case, the service request is sent to a first service layer so as to acquire corresponding service data. | 2022-08-25 |
20220272393 | SYSTEMS AND METHODS FOR IMPROVED MEDIA SLOT ALLOCATION - Systems and methods for inserting auxiliary content slots within portions of media assets determined to be of interest to users. Segments of a media asset being viewed by a user are identified as being of particular interest to the user, with reference to a stored set of user preferences. User preferences may be consulted to determine which of these segments may be of likely interest to the viewer. Slots for auxiliary content, such as an advertisement, are then added to those segments deemed to be of likely interest. Auxiliary content such as ads may accordingly be displayed to a user at points within media assets at which the user is more likely to be paying attention, increasing the likelihood that auxiliary content will be viewed and perhaps interacted with by the user. | 2022-08-25 |
20220272394 | SYSTEMS AND METHODS FOR IMPROVED ADAPTIVE VIDEO STREAMING - Systems and methods for improved adaptive video streaming are disclosed. The methods comprise receiving a first request to stream multimedia content stored on the multimedia content storage; streaming a first stream of multimedia content, wherein the first stream of multimedia content is one of the set of alternative variants of the multimedia content; receiving a second request to stream multimedia content stored on the multimedia content storage; and streaming a second stream of multimedia content, wherein the second stream of multimedia content is a different one of the set of alternative variants of the multimedia content, wherein the multimedia content comprises audio, video and advertisement data and each of the audio, video and advertisement data comprises a set of alternative variants. | 2022-08-25 |
20220272395 | PER-SEGMENT PARAMETERS FOR CONTENT - Per-segment parameters for content delivery are described herein. A manifest file for a segment and a parameter file for the segment may be sent to a user device. The parameter file may indicate one or more time ranges each corresponding to a parameter value. Requests for content segments based on the manifest file and the parameter file may be received. The user device may access the parameter file to determine a time range of the one or more time ranges into which a start time of a particular segment falls. The user device may determine a parameter value as corresponding to the determined time range. The user device may then generate a request to include the determined parameter value. | 2022-08-25 |