30th week of 2022 patent applcation highlights part 72 |
Patent application number | Title | Published |
20220239858 | DIGITAL TIME STAMPING DESIGN FOR EVENT DRIVEN PIXEL - An event driven pixel includes a photodiode configured to photogenerate charge in response to incident light received from an external scene. A photocurrent to voltage converter is coupled to the photodiode to convert photocurrent generated by the photodiode to a voltage. A filter amplifier is coupled to the photocurrent to voltage converter to generate a filtered and amplified signal in response to the voltage received from the photocurrent to voltage converter. A threshold comparison stage is coupled to the filter amplifier to compare the filtered and amplified signal received from the filter amplifier with thresholds to asynchronously detect events in the external scene in response to the incident light. A digital time stamp generator is coupled to asynchronously generate a digital time stamp in response to the events asynchronously detected in the external scene by the threshold comparison stage. | 2022-07-28 |
20220239859 | VISION SENSOR AND IMAGE PROCESSING DEVICE INCLUDING THE SAME - A vision sensor including a plurality of pixels configured to sense intensity of incident light, and to output request signals representing an occurrence status of an event; and an event detection circuit configured to generate event data including information about a pixel at which the event occurs, based on the request signals, wherein each pixel of the plurality of pixels includes: a photoelectric conversion device configured to generate a current corresponding to the incident light; a current-to-voltage converter configured to generate a voltage corresponding to the current; an amplifier configured to amplify a variation amount of the generated voltage to generate an output voltage; an event storage configured to generate an event signal corresponding to a comparison between the output voltage and a threshold voltage, and to hold the event signal using cross-coupled transistors; and an output logic configured to output a request signal based on the event signal. | 2022-07-28 |
20220239860 | SYSTEMS AND METHODS FOR OPERATION OF RECORDING DEVICES SUCH AS DIGITAL VIDEO RECORDERS (DVRs) - A method, according to one approach, includes receiving, at a local recording system, a representation of a first portion of a television program from a remote system, the local recording system being located remotely from the remote system. The representation of the first portion is temporally shorter than a contiguous length of the television program. The representation of the first portion is stored by the local recording system. The representation of the first portion is output by the local recording system. A representation of a second portion of the television program is received from the remote system after output of the representation of the first portion by the local recording system. | 2022-07-28 |
20220239861 | VIDEO MANAGEMENT SYSTEM AND VIDEO MANAGEMENT METHOD - An apparatus includes: an image capturing module configured to capture an image; a converting module configured to convert a first image with a first resolution to a second image with a second resolution; a storing module configured to store the first image and the second image; a communication module configured to receive a wireless signal; and a processor configured to functionally be connected with the image capturing module, the converting module, the storing module and the communication module, wherein the processor is configured to receive, from an external device, a request signal for requesting information related to the second image; generate a metadata related to the second image by analyzing the second image; and transmit, to the external device, an additional information about the second image based on the metadata. | 2022-07-28 |
20220239862 | Video Communication Device, Video Communication Method, and Video Communication Mediating Method - One or more embodiment relates to a video communication device, video communication method, and a video communication mediating method, which are capable of preventing a user in a video communication from being exposed to an inappropriate image or sound from the other party. One or more embodiment may provide a video communication method comprising establishing a first video communication session with a first terminal, consecutively receiving images or sounds from the first terminal through the first video communication session, examining at least a portion of images or sounds received in a period of recent specific time among the received images or sounds, and blocking an output of at least a portion of the received images or sounds or reporting a user of the first terminal as an abusive user to a first server according to the result of the examining. | 2022-07-28 |
20220239863 | EVENT NOTIFICATIONS FOR ONLINE MEETINGS - This disclosure describes techniques for providing notifications about events that occur during an online meeting. For instance, a system may establish an online meeting, such as a video conferencing meeting, for users. While in the meeting, a first user may view video of a second user and determine that the second user is experiencing an emergency event. As such, a user device of the first user may receive an input indicating that the emergency event is occurring with the second user. The system may receive the indication from the user device and verify that the emergency event is occurring. Additionally, the system may then send a notification to emergency personnel that indicates at least that the emergency event is occurring and a location of the second user. Furthermore, the system may send notification(s) to contact(s) associated with the second user that indicate at least that the emergency event is occurring. | 2022-07-28 |
20220239864 | Systems and Methods for Telepresence Rooms - A system that has a plurality of monitors, a control unit, a first object and a second object is provided. The second object has one or more sensors operable to generate data and is remote from the first object. The control unit is configured to determine whether a first user is positioned on a first or on a second location of the first object and display a simulation of a second user onto the plurality of monitors based on the generated data. The second user is located remote from the first user and is displayed as being positioned in a different location on the first object than the first user on the first object. The control unit is further configured to activate the one or more heat generating devices to simulate a presence of the second user being positioned in the different location on the first object. | 2022-07-28 |
20220239865 | MEASURING AUDIO AND VIDEO LATENCIES IN VIRTUAL DESKTOP ENVIRONMENTS - Described herein are systems, methods, and software to monitor latency information in virtual desktop environments. In one example, a user computing system may obtain a first frame of video data from a second computing system, wherein the video data is streamed from the user computing system to the second computing system. The user computing system further identifies a first frame number for the first frame based on a code in the first frame, identifies a frame number for second frame of the video data to be streamed to the second computing system when first frame was received, and determines frame latency based on a difference between the first frame number and the second frame number. | 2022-07-28 |
20220239866 | SYSTEM, METHOD, AND COMPUTER PROGRAM FOR TRANSMITTING FACE MODELS BASED ON FACE DATA POINTS - A system, method, and computer program are provided for receiving face models based on face nodal points. In use, a real-time face model is received, wherein the real-time face model includes one or more face nodal points. Real-time face nodal points are received, including additional one or more face nodal points. The real-time face model is manipulated based on the real-time face nodal points. | 2022-07-28 |
20220239867 | RENDERING CONTENT ON DISPLAYS IN LIVING ENVIRONMENT BASED ON ENVIRONMENT OUTSIDE LIVING ENVIRONMENT - An electronic device and method for rendering content on displays in a living environment based on environment outside the living environment is provided. The electronic device receives first images of a living environment from a first image capturing device positioned inside the living environment and detects a facial region of a user based on the received first images. The electronic device tracks a head position or an eye gaze of the user based on the detected facial region and selects a second image capturing device from a plurality of image capturing devices. The plurality of image capturing devices is coupled with the electronic device and is positioned outside the living environment. The electronic device receives second images from the selected second image capturing device and controls a display screen, associated with the electronic device and inside the living environment, to display the received second images. | 2022-07-28 |
20220239868 | OPTICAL SENSOR DEVICE AND CALIBRATION METHOD CAPABLE OF AVOIDING FALSE MOTION ALARM - A method of an optical sensor device includes: automatically entering a calibration mode to automatically define a region of interest as a masking region; and, selectively ignoring a motion detected within the masking region when the optical sensor device is in a normal operation mode. | 2022-07-28 |
20220239869 | SYSTEM FOR COMMUNICATING WITH A SUBJECT AND/OR FOR SUPERVISION OF THE SUBJECT DURING MAGNETIC RESONANCE IMAGING (MRI), CAMERA MODULE, CONTROL UNIT, RECEIVING AND SENDING UNIT AND OPTICAL TRANSMISSION SYSTEM - Disclosed is a system ( | 2022-07-28 |
20220239870 | FILTER ARRAY AND LIGHT DETECTION SYSTEM - A filter array according to one aspect of the present disclosure is provided with filters arranged two-dimensionally. The filters include multiple types of first filters having mutually different transmission spectra, of which each transmission spectrum includes first peaks, and multiple types of second filters having mutually different transmission spectra, of which each transmission spectrum includes one or more second peaks. The number of the first peaks in the transmission spectrum of each of the multiple types of first filters is greater than the number of the one or more second peaks in the transmission spectrum of each of the multiple types of second filters, and the multiple types of first filters and the multiple types of second filters are disposed in a mixed arrangement. | 2022-07-28 |
20220239871 | Projector Focusing Method and Projector Focusing System Capable of Projecting High Resolution Images at Arbitrary Positions - A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector. | 2022-07-28 |
20220239872 | THERMAL COMPENSATION IN IMAGE PROJECTION - A non-transitory computer-readable-medium storing instructions that, when executed by a processor of an image projector, cause the image projector to perform operations including receiving a first image data, determining a thermal state of the image projector based at least in part on a content of the first image data, generating a second image data based on the first image data and the thermal state; emitting light in response to the second image data, and projecting an image onto a screen based on the emitted light, wherein the first image data corresponds to a frame of a video, and the second image data corresponds to the frame of the video. | 2022-07-28 |
20220239873 | IMAGE DISPLAY APPARATUS - An image display apparatus according to one embodiment of the present disclosure includes: an output unit including a light source and outputting projection light outputted from the light source along a predetermined axis; an irradiation target member to be irradiated with the projection light; a first optical member disposed opposite to the output unit along the predetermined axis and controlling an incident angle of the projection light to be incident on the irradiation target member; and a second optical member included in the output unit and adjusting an illumination range of the projection light to be incident on the first optical member such that the illumination range has an aspect ratio of substantially the same as an aspect ratio of an outer shape of the first optical member. | 2022-07-28 |
20220239874 | RENDERING WIDE COLOR GAMUT TWO-DIMENSIONAL (2D) IMAGES ON THREE-DIMENSIONAL (3D) CAPABLE DISPLAYS - A display for displaying image data includes defining virtual color gamuts based on a plurality of primary display colors associated with a light source. At least one of the virtual color gamuts is defined to approximate an established color gamut. Intensity values associated with the virtual color gamuts are generated based on received video data, and the intensity values associated with the virtual color gamuts are used to generate drive values for the primary colors of the light source. A display using one or more virtual color gamuts is also disclosed. | 2022-07-28 |
20220239875 | DISPLAY SYSTEM FOR DISPLAYING PANORAMIC IMAGE AND OPERATION METHOD THEREOF - A display system for displaying a panoramic image and an operation method thereof are provided. The display system for displaying a panoramic image includes N projectors and a controller. The N projectors project N sub-images according to N image data and form a panoramic image. Each sub-image has a sub-image overlapping area, so that two adjacent sub-images of the N sub-images partially overlap, and that a first sub-image and an N | 2022-07-28 |
20220239876 | INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, PROGRAM, PROJECTION DEVICE, AND INFORMATION PROCESSING SYSTEM - There is provided an information processing device, an information processing method, a program, a projection device, and an information processing system capable of correcting distortion of a projection image by use of any image capturing device. The information processing device detects corresponding points on a projection image and a plurality of captured images on the basis of the projection image and the plurality of captured images, the projection image being projected on a projection surface by a projection device, the plurality of captured images having been obtained by image capturing of the projection image at a plurality of image capturing positions, estimates image capturing parameters including the plurality of image capturing positions and attitudes during image capturing at each of the image capturing positions and projection parameters including a position and an attitude of the projection device on the basis of corresponding point information indicating a relationship between the corresponding points, generates correction data used for geometric correction of an input image on the basis of the corresponding point information, the image capturing parameters, and the projection parameters, and transmits the correction data. The present technology can be applied to an information processing device that controls projection of a projector. | 2022-07-28 |
20220239877 | METHOD FOR CONTROLLING DISPLAY APPARATUS, AND DISPLAY APPARATUS - A method for controlling a display apparatus, the method comprising, displaying, in a first mode, a first image based on received image data having first resolution on a display surface at a first display size corresponding to the first resolution, displaying, in a second mode, a second image based on the image data having second resolution smaller than the first resolution on the display surface at a second display size corresponding to the second resolution, converting, when the display apparatus accepts the operation of increasing the second display size in the second mode, the first resolution of image data to third resolution corresponding to the operation, displaying a third image based on the image data having the third resolution on the display surface. | 2022-07-28 |
20220239878 | ENDOSCOPIC IMAGE ENHANCEMENT USING CONTRAST LIMITED ADAPTIVE HISTOGRAM EQUALIZATION (CLAHE) IMPLEMENTED IN A PROCESSOR - Systems and methods of enhancing images use a contrast limited adaptive histogram equalization (CLAHE) algorithm in a field programmable gate array (FPGA). The images may be obtained by the imaging elements of a multiple imaging elements endoscope of an endoscopy system. | 2022-07-28 |
20220239879 | IMAGING DEVICE, ELECTRONIC DEVICE, AND IMAGE GENERATION DEVICE - An imaging device is provided. The device comprises: an imaging unit in which a plurality of pixels each including a photoelectric conversion element are arranged; a signal processor configured to process a signal output from the imaging unit; and a storage device configured to store the signal output from the imaging unit and transfer the signal to the signal processor. The storage device stores a plurality of image signals output by the plurality of pixels arranged in the imaging unit as a plurality of sub-frames and then outputs a sub-frame satisfying a predetermined condition out of the plurality of sub-frames as a signal for configuring a single frame. | 2022-07-28 |
20220239880 | VIDEO SIGNAL PROCESSING METHOD AND APPARATUS - A chrominance adjustment method and apparatus, and a storage medium are provided. The method includes: determining a color adjustment coefficient of a chrominance component of a color signal based on a reference display device maximum luminance value (RML) and/or a source maximum luminance value (SML); and adjusting the chrominance component of the color signal based on the color adjustment coefficient. | 2022-07-28 |
20220239881 | IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS, AND PHOTOGRAPHING APPARATUS - In an image processing method, an image processing device obtains an input image from an image sensor. Each pixel of the input image is either a type-I pixel or a type-II pixel. Each type-I pixel carries a luminance channel value and no color data, and each type-II pixel carries a single color channel value and no luminance data, wherein the single color channel value is a cyan channel value, a magenta channel value, or a yellow channel value. The image processing device generates a target image by performing interpolation based on the luminance channel values and the single color channel values of the pixels of the input image, wherein each pixel in the target image corresponds in location to a pixel in the input image and has three color channel values generated by the interpolation. | 2022-07-28 |
20220239882 | INTERACTIVE INFORMATION PROCESSING METHOD, DEVICE AND MEDIUM - Disclosed are an interactive information processing method, an electronic device and a storage medium. The method includes establishing a position correspondence between a display text generated based on a multimedia data stream and the multimedia data stream; and presenting the display text and the multimedia data stream corresponding to the display text based on the position correspondence. | 2022-07-28 |
20220239883 | 3D LIGHT FIELD DISPLAYS UTILIZING MICRO-LED PIXEL ARRAYS AND METASURFACE MULTI-LENS ARRAYS - A three-dimensional (3D) light field display module is provided. The display module includes: a 3D pixel array of 3D pixels each made of a plurality of pixels, a metasurface multi-lens array (MLA) made of a plurality of metalenses, and an active matrix electrically coupled to the 3D pixel array for activating each of the plurality of pixels. The metasurface MLA is positioned parallel to the 3D pixel array, spaced therefrom and arranged such that each metalens of the plurality of metalenses is opposite and aligned with a corresponding 3D pixel of the plurality of 3D pixels for directing incident light rays emitted by the 3D pixel to different views. The 3D light field display module may be made with different parameters and can be used in large 3D TV or smartphones with 3D displays. | 2022-07-28 |
20220239884 | IMAGE VIEW ANGLE CONVERSION/FAULT DETERMINATION METHOD AND DEVICE, APPARATUS AND MEDIUM - An image view angle conversion method includes: model training data are obtained, the model training data including planar images of a training object at a plurality of different view angles and labels corresponding to respective view angles, where the labels corresponding to the different view angles are different. A pre-designed generative adversarial network model is trained according to the model training data to obtain a view angle conversion network model. A planar image of a target object and labels corresponding to one or more expected view angles of the target object are input into the view angle conversion network model, so that the view angle conversion network model generates planar images of the target object at the expected view angles. | 2022-07-28 |
20220239885 | METHODS, SYSTEMS, AND DEVICES FOR ADJUSTING IMAGE CONTENT FOR STREAMING PANORAMIC VIDEO CONTENT - Aspects of the subject disclosure may include, for example, obtaining image content over a communication network, determining a predicted viewpoint of a user associated with the image content, and adjusting the image content to equirectangular image content according to the predicted viewpoint. Further aspects can include downscaling the equirectangular image content according to a display capability of a mobile device resulting in a downscaled equirectangular image content, cropping the downscaled equirectangular image content resulting in a cropped equirectangular image content, and providing, over the communication network, the cropped equirectangular image content to the mobile device. Other embodiments are disclosed. | 2022-07-28 |
20220239886 | DEPTH SCULPTURING OF THREE-DIMENSIONAL DEPTH IMAGES UTILIZING TWO-DIMENSIONAL INPUT SELECTION - A depth sculpturing system comprises an eyewear device that includes a frame, a temple connected to a lateral side of the frame, and a depth-capturing camera. The depth sculpturing system further includes a user input device. Execution of programming by a processor configures the depth sculpturing system to perform functions to track, via the user input device, motion of a two-dimensional input selection from an initial touch point to a final touch point. The depth sculpturing system determines a rotation matrix between an initial ray and a final ray that project to the initial touch point and the final touch point, correspondingly. The depth sculpturing system generates a depth sculptured image by applying the rotation matrix to vertices of an initial depth image. The depth sculpturing system presents, via an image display, the depth sculptured image. | 2022-07-28 |
20220239887 | SHARED VIEWING OF VIDEO AMONG MULTIPLE USERS - Described are techniques for shared viewing of video among remote users, including methods and corresponding systems and apparatuses. A first computer device operated by a first user can receive an input video stream representing a three-dimensional (3D) space. From the input video stream, an output video stream corresponding to the 3D space as seen from a viewing direction specified by the first user is generated. The output video stream includes images that cover a narrower field of view compared to the input video stream. The first computer device can receive information indicating a viewing direction specified by a second user, who is a user of a second computer device. The first computer device can update the output video stream based on the information indicating the viewing direction specified by the second user. The updated output video stream can then be presented on a display of the first user. | 2022-07-28 |
20220239888 | VIDEO DISTRIBUTION SYSTEM, VIDEO DISTRIBUTION METHOD, AND DISPLAY TERMINAL - There is provided a video distribution system, a video distribution method, and a display terminal that enable more appropriate display of a video. The video distribution system includes an image acquisition unit that acquires a first image and a second image of a subject captured by a first camera and a second camera, a parameter adjustment unit that adjusts a parameter that affects an appearance to a user regarding a virtual subject corresponding to the subject in a virtual space represented by the first image and the second image that have been acquired, and a display control unit that displays a video representing the virtual space including the virtual subject corresponding to the adjusted parameter on a display terminal. The present technology can be applied to, for example, a system that distributes a stereoscopic video. | 2022-07-28 |
20220239889 | DYNAMIC-BASELINE IMAGING ARRAY WITH REAL-TIME SPATIAL DATA CAPTURE AND FUSION - Spatial image data captured at plural camera modules is fused into rectangular prism coordinates to support rapid processing and efficient network communication. The rectangular prism spatial imaging data is remapped to a truncated pyramid at render time to align with a spatial volume encompassed by a superset of imaging devices. A presentation of a reconstructed field of view is provide with near and far field image capture from the plural imaging devices. | 2022-07-28 |
20220239890 | System and Methods for Calibration of an Array Camera - Systems and methods for calibrating an array camera are disclosed. Systems and methods for calibrating an array camera in accordance with embodiments of this invention include the capturing of an image of a test pattern with the array camera such that each imaging component in the array camera captures an image of the test pattern. The image of the test pattern captured by a reference imaging component is then used to derive calibration information for the reference component. A corrected image of the test pattern for the reference component is then generated from the calibration information and the image of the test pattern captured by the reference imaging component. The corrected image is then used with the images captured by each of the associate imaging components associated with the reference component to generate calibration information for the associate imaging components. | 2022-07-28 |
20220239891 | METHOD FOR GENERATING CONTROL SIGNALS FOR AN IMAGE CAPTURE DEVICE - The present invention relates to a method for generating control signals for an image capture device, the method being performed in a communication device comprising a first slave time generator and a second slave time generator, the communication device being connected to a first remote time server and a second remote time server, the method comprising:
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20220239892 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM - An information processing apparatus includes a setting unit configured to set a movement parameter indicating a relationship between a movement amount in a real space of an input apparatus used for moving a virtual viewpoint corresponding to a virtual viewpoint image, and a movement amount of a virtual viewpoint in a virtual space, based on a user operation, and a movement control unit configured to move, in accordance with a movement of the input apparatus, the virtual viewpoint by a movement amount in the virtual space that is determined based on the movement parameter set by the setting unit and a movement amount in the real space of the input apparatus. | 2022-07-28 |
20220239893 | REVERSE PASS-THROUGH GLASSES FOR AUGMENTED REALITY AND VIRTUAL REALITY DEVICES - A device for providing a reverse pass-through view of a user of a headset display to an onlooker includes an eyepiece comprising an optical surface configured to provide an image to a user on a first side of the optical surface. The device also includes a first camera configured to collect an image of a portion of a face of the user reflected from the optical surface in a first field of view, a display adjacent to the optical surface and configured to project forward an image of the face of the user, and a screen configured to receive light from the display and provide the image of the face of the user to an onlooker. | 2022-07-28 |
20220239894 | IMAGE GENERATION APPARATUS, IMAGE GENERATION METHOD, AND PROGRAM - Provided is an image generation technology capable of suppressing unpleasantness associated with fluctuation in image quality caused by the viewer's viewpoint movement. A synthesis ratio determination unit of an image generation apparatus includes: an image quality evaluation index calculation unit that generates a synthesis image J | 2022-07-28 |
20220239895 | DISPLAY APPARATUS AND CONTROL METHOD THEREOF - A display apparatus and a control method thereof are provided. The display apparatus includes a communication interface configured to receive captured images and information related to the captured images; a display; and a processor configured to: obtain an object disparity of an object included in the captured images and a number of the captured images based on the information related to the captured images; identify whether a display disparity representable by the display matches the object disparity; based on the display disparity not matching the object disparity, generate interpolated images by performing image interpolation based on the display disparity, the object disparity, and the number of the captured images; and control the display to display a three-dimensional content based on the captured images and the interpolated images. | 2022-07-28 |
20220239896 | APPARATUS AND METHOD FOR PROVIDING CONTENT WITH MULTIPLANE IMAGE TRANSCODING - Aspects of the subject disclosure may include, for example, transmitting viewpoint information associated with a first portion of a three-dimensional (3D)/volumetric video to a device, wherein the viewpoint information comprises a first coordinate in 3D space associated with a first viewing direction in a playback of the first portion and a first timestamp associated with the first portion, receiving, from the device, a multiplane image (MPI) representation of a second portion of the 3D video responsive to the transmitting of the viewpoint information, and providing an image of the MPI representation to a display device. Other embodiments are disclosed. | 2022-07-28 |
20220239897 | METHODS AND APPARATUSES FOR CROSS-COMPONENT PREDICTION - Example implementations include a method, apparatus and computer-readable medium of video coding, comprising receiving the code block and one or more neighbor samples and determining the value of beta based on at least one of an average chroma value, a midrange chroma value, a median chroma value, an average luma value, a midrange luma value, or a median luma value of two or more neighbor samples. | 2022-07-28 |
20220239898 | SYSTEM AND METHOD FOR VIDEO PERFORMANCE OPTIMIZATIONS DURING A VIDEO CONFERENCE SESSION - An information handling system executing a multimedia multi-user collaboration application (MMCA) may include a memory; a power management unit; a video camera to capture video of a user participating in a video conference session conducted by a processor executing code instructions of the MMCA via a first network link on a network interface device; a time-of-flight (TOF) sensor to provide distance data descriptive of the distance between a user's body and the video camera; the processor configured to execute a video frame user presence detection system to: slice a video frame into a plurality of video frame slices; based on the distance data, create a human object presence (HOP) heat map to assign a probability of the presence of the user's body within each video frame slice of the video frame; the processor configured to select, among the plurality of video frame slices, those video frame slices with an assigned probability of presence of the user's body that exceeds a threshold probability as a HOP video frame slice group where the user's body appears within the video frame; and the network interface device configured to send data defining the HOP video frame slice group to a sink information handling system participating in the video conference session over the network to assist decoding of the video frame at the sink information handling system. | 2022-07-28 |
20220239899 | CODING OF MOTION INFORMATION - Implementations of the present disclosure provide a solution for encoding and decoding motion information. In this solution, during a conversion between a current video block of a video and a bitstream of the video, a group type of a subgroup of candidates of motion information for the current video block is determined, wherein the group type indicating whether the subgroup of candidates are to be reordered. Further, a list of candidates are constructed based on the group type; and the motion information for the current video block is derived from the list of candidates. | 2022-07-28 |
20220239900 | VIDEO DECODING METHOD AND DEVICE, AND VIDEO ENCODING METHOD AND DEVICE - Provided are a video decoding method and device, in which, during video encoding and decoding processes: information about whether to apply an affine mode to a current block is received; when the information about whether to apply the affine mode indicates that the affine mode is to be applied, an affine parameter group is determined based on a history-based affine parameter group candidate list in which affine parameter groups of one or more blocks reconstructed in an affine mode before the current block are stored; and prediction on the current block is performed based on the affine parameter group. | 2022-07-28 |
20220239901 | VIDEO PICTURE COMPONENT PREDICTION METHOD AND APPARATUS, AND COMPUTER STORAGE MEDIUM - Provided are a video picture component prediction method and apparatus, and a computer storage medium. The method may comprise: acquiring a reference value set of a first picture component of a current block; determining, from the reference value set of the first picture component, multiple first picture component reference values; respectively carrying out first filtering processing on a sample value of a sample corresponding to each of the multiple first picture component reference values to obtain multiple filtered first picture reference sample values; determining reference values, corresponding to the multiple filtered first picture reference sample values, of a picture component to be predicted; according to the multiple filtered first picture reference sample values and the reference values of the picture component to be predicted, determining a parameter of a component linear model; according to the component linear model, carrying out mapping processing on a reconstruction value of the first picture component of the current block to obtain a mapping value; and according to the mapping value, determining a prediction value of the picture component to be predicted of the current block. | 2022-07-28 |
20220239902 | METHODS AND APPARATUSES FOR VIDEO CODING USING TRIANGLE PARTITION - Methods and apparatuses are provided for video coding. The method includes: partitioning video pictures into a plurality of CUs, at least one CU is further partitioned into two PUs including at least one geometric shaped PU; constructing a first merge list including a plurality of candidates, each candidate being a MV including a List 0 MV, or a List 1 MV; locating a first candidate for the first PU and a second candidate for the second PU according to a first index and a second index, respectively; obtaining a first uni-prediction MV for the first PU by selecting a List X1 MV of the first candidate according to a first binary reference list indication flag; and obtaining a second uni-prediction MV for the second PU by selecting a List X2 MV of the second candidate according to a second binary reference list indication flag. | 2022-07-28 |
20220239903 | INTRA PREDICTION METHOD AND APPARATUS, AND COMPUTER-READABLE STORAGE MEDIUM - Provided are an intra prediction method and apparatus, and a computer-readable storage medium. The method includes: acquiring a first reference sample set corresponding to the current processing block, wherein the first reference sample set includes at least one of a reference row adjacent to the current processing block and a reference column adjacent to the current processing block; selecting, based on a pre-set selection method, a second reference sample set from the first reference sample set, wherein the second reference sample set includes at least one reference sample in the reference row adjacent to the current processing block or the reference column adjacent to the current processing block; obtaining, based on the second reference sample set, a prediction value of the current processing block; and performing, based on the prediction value, intra prediction on the current processing block. | 2022-07-28 |
20220239904 | Video Encoding Method, Video Playback Method, Related Device, and Medium - This application discloses a video encoding method, a video playback method, a related device, and a medium. The video encoding method may include: obtaining a target prediction unit in a target image block and a mode information set; performing abnormal distortion point detection on the target prediction unit in at least one candidate prediction mode in the mode information set, to obtain a detection result corresponding to the at least one candidate prediction mode; calibrating a mode cost of the at least one candidate prediction mode in the mode information set according to the detection result corresponding to the at least one candidate prediction mode, to obtain a calibrated mode information set; selecting a target prediction mode from the plurality of candidate prediction modes according to the mode costs of the candidate prediction modes in the calibrated mode information set; and performing prediction on the target prediction unit by using the target prediction mode, to obtain encoded data of the target image block. | 2022-07-28 |
20220239905 | 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. | 2022-07-28 |
20220239906 | SYSTEM AND METHOD FOR APPLYING ADAPTIVE LOOP FILTER IN VIDEO CODING - Embodiments of the disclosure provide systems and methods for applying an adaptive loop filter (ALP) in video coding. The method may include determining a first rate-distortion cost of applying the adaptive loop filter on a reconstructed block. The reconstructed block includes a reconstructed version of an image block of an image frame from a video. The method may further include determining a second rate-distortion cost of not applying the adaptive loop filter on the reconstructed block. The method may additionally include determining whether to apply the adaptive loop filter for processing the reconstructed block based on the first rate-distortion cost and the second rate-distortion cost. | 2022-07-28 |
20220239907 | IMAGE ENCODING/DECODING METHOD AND DEVICE FOR SIGNALING FILTER INFORMATION ON BASIS OF CHROMA FORMAT, 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 include determining a chroma array type of a current image, determining an adaptive loop filter (ALF) indicator of a chroma component based on the chroma array type, and performing ALF filtering with respect to a reconstructed image based on a value of the ALF indicator. The value of the ALF indicator may be determined to be a predetermined value without being obtained from a bitstream, based on the chroma array type being a predetermined type, and the value of the ALF indicator may be obtained from the bitstream, based on the chroma array type being not the predetermined type. | 2022-07-28 |
20220239908 | METHOD FOR PROCESSING IMAGES, METHOD FOR PROCESSING VIDEOS, COMPUTER DEVICE AND MEDIUM - A method for processing images includes: determining an image attribute of each image block of a plurality of image blocks in a to-be-processed image, determining a filter model corresponding to each of the image blocks based on the image attribute of each of the image blocks, and acquiring a filtered image of the to-be-processed image by filtering each of the image blocks by the filter model corresponding to each of the image blocks. | 2022-07-28 |
20220239909 | ENCODER, DECODER AND CORRESPONDING METHODS USING INTERPOLATION FILTERING - A method for operating a two-dimensional (2D) separable interpolation filter for coding a video, wherein the two-dimensional separable interpolation filter comprises a first and a second one-dimensional (1D) interpolation filter and a temporal buffer of a predetermined buffer size, wherein the method comprises: obtaining filter coefficients for the first one-dimensional interpolation filter of the two-dimensional interpolation filter; comparing a sum of positive filter coefficients of the obtained filter coefficients with a threshold; and upon determining that the sum of positive filter coefficients is larger than the threshold, amending one or more of the filter coefficients to obtain amended filter coefficients, wherein the one or more filter coefficients are amended such that a sum of positive filter coefficients of the amended filter coefficients is not larger than the threshold; applying the amended filter coefficients to samples of the video to obtain a value of a fractional sample position of the video; re-scaling the value of the fractional sample position and storing the re-scaled value of the fractional sample position in the temporal buffer. | 2022-07-28 |
20220239910 | Video Encoding Method and Apparatus, Video Decoding Method and Apparatus, Electronic Device, and Storage Medium - Embodiments of this disclosure provide a video encoding and decoding method and devices relate to artificial intelligence technologies applied to video encoding and decoding, and are implemented to reduce decoding complexity and improve filtering efficiency when the video quality is not significantly affected by performing video filtering using machine learning technologies. The video encoding method may include obtaining a reconstructed video frame from encoded data of an encoded video frame, the encoded video frame comprising at least two encoding blocks; filtering the reconstructed video frame, to obtain filtering gains corresponding to the at least two encoding blocks; determining, according to a distribution of the filtering gains of the at least two encoding blocks, a target encoding block among the at least two encoding blocks that is to be filtered when being decoded at a decoder; and including into the encoded data of the encoded video frame, an indication information for indicating that the target encoding block is to be filtered. | 2022-07-28 |
20220239911 | Video Encoding and Decoding Methods and Apparatuses, Electronic Device, and Storage Medium - Embodiments of this disclosure provide video encoding and decoding methods and devices relates to artificial intelligence (AI) technologies applied to video encoding and decoding and are implemented to perform video filtering, so that coding blocks with a relatively greater filtering gain may be selected for filtering after reconduction, thereby improving filtering efficiency. An example video encoding method includes: obtaining a reconstructed video frame from encoded data of an encoded video frame, the encoded video frame comprising at least one encoding block; filtering the reconstructed video frame, to obtain a filtering gain of each pixel of the at least one encoding block; for an encoding block in the at least one encoding block, determining, according to a distribution of gains of pixels of the encoding block, whether the encoding block is to be filtered when being decoded at a decoder; and in response to determining that the encoding block is to be filtered when being decoded at a decoder, including into the encoded data of the encoded video frame an indication information for indicating that the encoding block is to be filtered into the encoded data. | 2022-07-28 |
20220239912 | SLICE LEVEL SIGNALING IN VIDEO BITSTREAMS THAT INCLUDE SUBPICTURES - An example method of video processing includes performing a conversion between a video comprising one or more pictures and a bitstream representation of the video. The bitstream representation is required to conform to a format rule that specifies that each picture is coded as one or more slices. The format rule prohibits samples in a picture from not being covered by any of the one or more slices. | 2022-07-28 |
20220239913 | ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD - Provided is an encoder which includes circuitry and memory. Using the memory, the circuitry splits an image block into a plurality of partitions, obtains a prediction image for a partition, and encodes the image block using the prediction image. When the partition is not a non-rectangular partition, the circuitry obtains (i) a first prediction image for the partition, (ii) a gradient image for the first prediction image, and (iii) a second prediction image as the prediction image using the first prediction image and the gradient image. When the partition is a non-rectangular partition, the circuitry obtains the first prediction image as the prediction image without using the gradient image. | 2022-07-28 |
20220239914 | INFORMATION PROCESSING DEVICE, IMAGING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM - The present technology relates to an information processing device, an imaging device, an information processing method, and a program capable of generating an appropriate digital signal having high quantization precision from a digital signal having low quantization precision. | 2022-07-28 |
20220239915 | PERCEPTUAL ADAPTIVE QUANTIZATION AND ROUNDING OFFSET WITH PIECE-WISE MAPPING FUNCTION - An unencoded video frame of a sequence of video frames is encoded to generate an encoded bit-stream representative of the unencoded video frame. The unencoded video frame is divided into a plurality of coding blocks. A local sensitivity measurement may be determined for each of the coding blocks. Based on the local sensitivity measurement, an encoder may determining one or more quantization parameters, one or more adaptive rounding offsets, or one or more quantization steps. The determined parameters may be provided to a quantizer of a video encoder for use in encoding the coding block of the unencoded video frame. | 2022-07-28 |
20220239916 | VIDEO DECODING METHOD AND APPARATUS, AND VIDEO ENCODING METHOD AND APPARATUS - Provided are a video decoding method and apparatus including: in a video encoding and decoding process, determining parity information of a current block based on a width and a height of the current block; determining a lookup table of the current block from among a plurality of predefined lookup tables based on the parity information; determining a dequantization scale value of the current block based on the lookup table of the current block; and performing dequantization on the current block by using the dequantization scale value. | 2022-07-28 |
20220239917 | VIDEO DECODING METHOD AND APPARATUS, AND VIDEO ENCODING METHOD AND APPARATUS - Provided are a video decoding method and apparatus including: in a video encoding and decoding process, determining parity information of a current block based on a width and a height of the current block; determining a lookup table of the current block from among a plurality of predefined lookup tables based on the parity information; determining a dequantization scale value of the current block based on the lookup table of the current block; and performing dequantization on the current block by using the dequantization scale value. | 2022-07-28 |
20220239918 | METHOD AND DEVICE FOR SYNTAX SIGNALING IN VIDEO/IMAGE CODING SYSTEM - A decoding method performed by a decoding device according to the present document comprises: a step for acquiring, from a bitstream, at least one among a combined inter-picture merge and intra-picture prediction (CIIP) available flag, which indicates whether or not CIIP is available, and a partitioning mode available flag, which indicates whether or not a partitioning mode for dividing a current block into two partitions and performing prediction is available; a step for determining the prediction mode of the current block on the basis of at least one among the CIIP available flag and the partitioning mode available flag; and a step for generating prediction samples of the current block on the basis of the prediction mode, wherein the step for determining the prediction mode may include a step for acquiring a regular merge flag from the bitstream on the basis of at least one among the CIIP available flag and the partitioning mode available flag | 2022-07-28 |
20220239919 | Simplified Downsampling for Matrix Based Intra Prediction - A prediction unit ( | 2022-07-28 |
20220239920 | VIDEO PROCESSING METHOD, RELATED APPARATUS, STORAGE MEDIUM, AND PROGRAM PRODUCT - A video processing method is provided, including obtaining an original video sequence, the original video sequence comprising P video frames obtained through rendering, P being an integer greater than or equal to 2; obtaining a target video sequence according to the original video sequence, the target video sequence comprising the P video frames and Q unrendered video frames interpolated based on at least two video frames of the P video frames, Q being an integer greater than or equal to 1; encoding the target video sequence to obtain a video encoding sequence; and transmitting the video encoding sequence to a terminal device, the terminal device decoding the video encoding sequence to obtain a video sequence that needs to be rendered. | 2022-07-28 |
20220239921 | BLOCK BOUNDARY PREDICTION REFINEMENT WITH OPTICAL FLOW - Systems, methods, and instrumentalities are disclosed for sub-block/block refinement, including sub-block/block boundary refinement, such as block boundary prediction refinement with optical flow (BBPROF). A block comprising a current sub-block may be decoded based on a sample value for a first pixel that is obtained based on, for example, an MV for a current sub-block, an MV for a sub-block adjacent the current sub-block, and a sample value for a second pixel adjacent the first pixel. BBPROF may include determining spatial gradients at pixel(s)/sample location(s). An MV difference may be calculated between a current sub-block and one or more neighboring sub-blocks. An MV offset may be determined at pixel(s)/sample location(s) based on the MV difference. A sample value offset for the pixel in a current sub-block may be determined. The prediction for a reference picture list may be refined by adding the calculated sample value offset to the sub-block prediction. | 2022-07-28 |
20220239922 | Usage of DCT Based Interpolation Filter - The present disclosure provides a method of coding implemented by a decoding/encoding device for coding video data. The method comprises the following steps: for a block coded in affine mode, determining control point motion vectors, CPMVs; determining a reference area in a reference picture corresponding to a sub-block of the affine coded block based on the determined CPMVs; setting a variable clipMVX equal to TRUE if a size of the reference area is greater than a predefined threshold, otherwise setting a variable clipMVX equal to FALSE; deriving a pixel-based motion vector field for the affine coded block; wherein, if the variable clipMVX is equal to TRUE, the deriving the pixel-based motion vector field further comprises motion vector clipping based on a first clipping range, wherein the first clipping range is determined based on the determined CPMVs and a size of the affine coded block. | 2022-07-28 |
20220239923 | DYNAMICALLY BIASING MODE SELECTION IN VIDEO ENCODING - A hardware video processor comprises a cost calculation unit. The cost calculation unit is configured to determine rate distortion costs of a plurality of different modes for a portion of a video. The hardware video processor further comprises an evaluation unit. The evaluation unit is configured to receive the rate distortion costs of the plurality of different modes. At least one component of at least one of the rate distortion costs is adjusted based on a condition to determine at least one modified rate distortion cost of at least one of the plurality of different modes. The at least one modified rate distortion cost is used to evaluate the plurality of different modes and select one of the modes for use in encoding the portion of the video. | 2022-07-28 |
20220239924 | ARITHMETIC ENCODERS AND DECODERS, VIDEO ENCODERS AND DECODERS, METHODS FOR ENCODING OR DECODING SYMBOLS, AND METHODS FOR ENCODING OR DECODING VIDEO CONTENT - Arithmetic encoder for encoding a plurality of symbols is configured to derive an interval size information for an arithmetic encoding of one or more symbol values to be encoded on the basis of one or more state variable value, in a first mode of operation, and to update the one or more state variable values and/or the interval size information for an encoding of one or more subsequent symbol values to be encoded in the first mode; in a second mode, the arithmetic encoder is configured to disable an update of the one or more state variable values and/or of the interval size information. Additionally, further embodiments of arithmetic encoders and decoders and video encoders and decoders are described. | 2022-07-28 |
20220239925 | METHOD AND APPARATUS FOR APPLYING DEEP LEARNING TECHNIQUES IN VIDEO CODING, RESTORATION AND VIDEO QUALITY ANALYSIS (VQA) - Video quality analysis may be used in many multimedia transmission and communication applications, such as encoder optimization, stream selection, and/or video reconstruction. An objective VQA metric that accurately reflects the quality of processed video relative to a source unprocessed video may take into account both spatial measures and temporal, motion-based measures when evaluating the processed video. Temporal measures may include differential motion metrics indicating a difference between a frame difference of a plurality of frames of the processed video relative to that of a corresponding plurality of frames of the source video. In addition, neural networks and deep learning techniques can be used to develop additional improved VQA metrics that take into account both spatial and temporal aspects of the processed and unprocessed videos. | 2022-07-28 |
20220239926 | METHODS AND APPARATUS OF VIDEO CODING USING PALETTE MODE - An electronic apparatus performs a method of decoding video data. The method comprises: receiving, from bitstream, a first syntax element associated with a first set of palette mode coding units at a first coding level; in accordance with a determination that the first syntax element has a first predefined value: choosing a first binarization process for the first set of palette mode coding units; decoding, from the bitstream, escape samples in the first set of palette mode coding units using the first binarization process; in accordance with a determination that the first syntax element does not have the first predefined value: choosing a second binarization process for the first set of palette mode coding units, the second binarization process being different from the first binarization process; and decoding, from the bitstream, the escape samples in the first set of palette mode coding units using the second binarization process. | 2022-07-28 |
20220239927 | INTRA PREDICTION METHOD AND APPARATUS - An intra prediction method according to the present invention comprises the following steps: performing a directional prediction using at least one of a neighboring pixel of a current block and a left upper corner pixel positioned at a left upper corner of the current block so as to obtain a first prediction value for the current block; obtaining a second prediction value for the current block using the reference sample positioned in the current block; and weighted summing the first prediction value and the second prediction value using a weighting matrix so as to obtain a final prediction value for the current block. According to the present invention, image encoding/decoding efficiency may be improved. | 2022-07-28 |
20220239928 | METHODS FOR INTRA PREDICTION, ENCODER AND DECODER - A method for intra prediction includes: obtaining multiple previously reconstructed neighbouring blocks corresponding to a current processing block; determining prediction modes, that are signalled in a bitstream, corresponding to neighbouring blocks of the multiple previously reconstructed neighbouring blocks, to obtain multiple first prediction modes; if the multiple first prediction modes comprise at least two directional modes, taking directional modes comprised in the multiple first prediction modes as first prediction directions; performing, according to a preset operation rule, operation on multiple first prediction directions of the first prediction directions to obtain second prediction directions; obtaining a prediction mode set according to the second prediction directions and the multiple first prediction modes; and performing intra prediction on the current processing block based on the prediction mode set. | 2022-07-28 |
20220239929 | METHODS FOR INTRA PREDICTION, ENCODER AND DECODER - A method for intra prediction includes: obtaining multiple previously reconstructed neighbouring blocks corresponding to a current processing block; determining prediction modes, that are signalled in a bitstream, corresponding to neighbouring blocks of the multiple previously reconstructed neighbouring blocks, to obtain multiple first prediction modes; if the multiple first prediction modes comprise at least two directional modes, taking directional modes comprised in the multiple first prediction modes as first prediction directions; performing, according to a preset operation rule, operation on multiple first prediction directions of the first prediction directions to obtain second prediction directions; obtaining a prediction mode set according to the second prediction directions and the multiple first prediction modes; and performing intra prediction on the current processing block based on the prediction mode set. | 2022-07-28 |
20220239930 | METHOD AND APPARATUS FOR ADAPTIVE ILLUMINATION COMPENSATION IN VIDEO ENCODING AND DECODING - Different implementations are described for determining one or more illumination compensation parameters for a current block being encoded by a video encoder or decoded by a video decoder, based on the selection of one or more neighboring samples. The selection of the one or more neighboring samples is based on information used to reconstruct a plurality of neighboring reconstructed blocks. The selection may be based on the motion information, such as motion vector and reference picture information. In one example, only samples from neighboring reconstructed blocks that have (1) the same reference picture index and/or (2) a motion vector close to the motion vector of the current block is selected. In another example, if the current block derives or inherits some motion information from a top or left neighboring block, then only the top or left neighboring samples are selected for IC parameter calculation. | 2022-07-28 |
20220239931 | Method and Apparatus of Subblock Deblocking in Video Coding - Method and apparatus for constrained de-blocking filter are disclosed. One method receives input data related to a current block in a current picture at a video encoder side or a video bitstream determines a block boundary of the current block and sub-block boundaries inside the current block, wherein the current block is partitioned into a plurality of sub-blocks using sub-block mode prediction. The method then applies de-blocking process to a reconstructed current block corresponding to the current block to result in a current filtered-reconstructed block, wherein said applying the de-blocking process to the current block comprises applying the de-blocking process to the sub-block boundaries inside the current filtered-reconstructed block, and generates a filtered decoded picture including the current filtered-reconstructed block. | 2022-07-28 |
20220239932 | SIGNALING AND SYNTAX FOR IN-LOOP RESHAPING INFORMATION - A method for video processing is provided to include: performing a conversion between a current video block of a video and a coded representation of current video block, wherein the conversion uses a coding mode in which the current video block is constructed based on a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner, and wherein information used for the coding mode is signaled in a parameter set that is different from a sequence parameter set (SPS), a video parameter set (VPS), a picture parameter set (PPS), or an adaptation parameter set (APS) used for carrying adaptive loop filtering (ALF) parameters. | 2022-07-28 |
20220239933 | IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM - An image encoding/decoding method and apparatus are disclosed. The method of decoding an image according to the present invention, comprises, obtaining a single stream including subpicture information of a plurality of subpictures; selecting a subpicture to be extracted from among the plurality of subpictures; determining the single stream as a stream to be extracted and obtaining a sub stream for the subpicture to be extracted from the stream to be extracted, by removing or using at least one piece of subpicture information included in the stream to be extracted. | 2022-07-28 |
20220239934 | DPB Size Based Reference Picture Entry Constraints - A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture and a reference picture list syntax structure (ref_pic_list_struct( )) comprising a number of reference entries (num_ref_entries) constrained to a range of zero to a maximum decoded picture buffer size plus an offset. The current picture is decoded based on the ref_pic_list_struct( ) to produce a decoded picture. The decoded picture is forwarded for display as part of a decoded video sequence | 2022-07-28 |
20220239935 | VIDEO COMPRESSION WITH ADAPTIVE ITERATIVE INTRA-PREDICTION - A method of video decoding at a video decoder can include receiving one or more syntax elements associated with a current first block that belongs to a plurality of first blocks partitioned from a picture, the one or more syntax elements indicating an optimal partition indicating how the current first block is partitioned into second blocks for intra-prediction, a set of block selection signals, wherein the current first block is re-partitioned into third blocks, each block selection signal corresponds to one of the third blocks and indicates whether the respective third block is coded using a first coding method or a second coding method, and a set of compressed representations each corresponding to one of the third blocks. The current first block can be reconstructed based on the one or more syntax elements to generate a reconstructed current first block. | 2022-07-28 |
20220239936 | DEFINING TRANSFORM SIZE AND SUBBLOCK TRANSFORM BASED ON ADAPTIVE COLOR TRANSFORM - Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. In a method, whether an adaptive color transform (ACT) is enabled for a current block is determined. A maximum transform size is determined based on whether the ACT is enabled for the current block. Whether a subblock transform (SBT) is applied to the current block is determined based at least on the maximum transform size. Further, the SBT is performed on the current block based on the SBT being determined to be applied to the current block. | 2022-07-28 |
20220239937 | IMAGE ENCODING/DECODING METHOD AND DEVICE FOR PERFORMING WEIGHTED PREDICTION, 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 first flag specifying whether to perform weighted prediction on a current block and a weight index BcwIdx of bi-prediction with CU-level weight (BCW) for the current block, determining whether to perform default weighted prediction or explicit weighted prediction on the current block based on the first flag and BcwIdx, and generating a prediction block for the current block by performing the determined method. | 2022-07-28 |
20220239938 | Avoidance of Redundant Signaling in Multi-Layer Video Bitstreams - A method of decoding includes receiving a bitstream having a plurality of layers and a video parameter set (VPS), where the VPS includes a direct reference layer flag, where the direct reference layer flag equal to a first value specifies that a second layer is not a direct reference layer for a first layer, and where the direct reference layer flag equal to a second value specifies that the second layer is the direct reference layer for the first layer; deriving a reference layer flag by: initially setting the reference layer flag to the first value; and updating the reference layer flag to the second value when the direct reference layer flag has the second value; and decoding a picture from the first layer in accordance with the reference layer flag to obtain a decoded picture. | 2022-07-28 |
20220239939 | Temporal Prediction Shifting for Scalable Video Coding - A method includes receiving an input video stream and scaling the input video stream into two or more spatial layers. For each spatial layer, the method also includes generating a temporal layer prediction pattern by: obtaining a temporal base layer for a corresponding spatial layer; identifying, based on the temporal base layer, a plurality of temporal layers and a plurality of temporal time slots during a temporal period; and aligning the temporal base layer for the corresponding spatial layer with one of the temporal time slots during the temporal period. Each temporal time slot is associated with one of the temporal base layer or one of the plurality of temporal layers for the corresponding spatial layer. The temporal base layer for each corresponding spatial layer is aligned with a different temporal time slot than each other temporal base layer for each other corresponding spatial layer. | 2022-07-28 |
20220239940 | METHOD AND APPARATUS FOR VIDEO CODING - Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. For example, the processing circuitry decodes prediction information of a current block from a coded video bitstream. The prediction information indicates that a prediction of the current block is at least partially based on an inter prediction. Then, the processing circuitry reconstructs at least a sample of the current block as a combination of a result from the inter prediction and neighboring samples of the block that are selected based on a position of the sample. | 2022-07-28 |
20220239941 | MOTION VECTOR PREDICTION-BASED IMAGE/VIDEO CODING METHOD AND DEVICE - An image decoding method according to the present document comprises: decoding a current block on the basis of image information, wherein an MVP candidate list for the current block is derived on the basis of an inter prediction mode, which is derived on the basis of image information, and peripheral blocks of the current block; and deriving motion information of the current block on the basis of the MVP candidate list, wherein the peripheral blocks include a left bottom corner peripheral block, a left peripheral block, a right top corner peripheral block, a top peripheral block, and a left top corner peripheral block of the current block, the motion information includes an L0 motion vector for L0 prediction and/or an L1 motion vector for L1 prediction, the L0 motion vector is derived on the basis of an L0 motion vector predictor and an L0 motion vector difference, and the L1 motion vector is derived on the basis of an L1 motion vector predictor and an L1 motion vector difference. | 2022-07-28 |
20220239942 | APPARATUS AND METHOD FOR ENCODING MOTION VECTOR DETERMINED USING ADAPTIVE MOTION VECTOR RESOLUTION, AND APPARATUS AND METHOD FOR DECODING MOTION VECTOR - A method of decoding a motion vector includes: obtaining information indicating a motion vector resolution (MVR) of a current block from a bitstream, selecting one candidate block from among at least one candidate block, based on the MVR of the current block; and obtaining a motion vector of the current block corresponding to the MVR, by using a motion vector of the determined one candidate block as a prediction motion vector of the current block. | 2022-07-28 |
20220239943 | METHODS AND APPARATUSES FOR PREDICTION REFINEMENT WITH OPTICAL FLOW, BI-DIRECTIONAL OPTICAL FLOW, AND DECODER-SIDE MOTION VECTOR REFINEMENT - A bit-depth representation method, apparatus, and a non-transitory computer-readable storage medium are provided. A decoder obtains a reference picture I associated with a video block within the video signal. The decoder obtains prediction samples of the video block from a reference block in the reference picture I. The decoder controls internal PROF parameters of a PROF derivation process by applying right-shifting to the internal PROF parameters based on a bit-shift value to achieve a preset precision. The decoder obtains prediction refinement values for samples in the video block based on the PROF derivation process being applied to the video block based on the prediction samples. The decoder obtains prediction samples of the video block based on the combination of the prediction samples and the prediction refinement values. | 2022-07-28 |
20220239944 | NEURAL NETWORK-BASED VIDEO COMPRESSION WITH BIT ALLOCATION - A method of video processing includes determining a target bitrate for a current video unit of a video that is based on a rate distortion function in which a rate portion is weighted using lambda, wherein lambda is a rational number and wherein lambda is an adaptively adjusted for each video unit of the video and performing a conversion between the current video unit and a bitstream of the video. | 2022-07-28 |
20220239945 | APPARATUS AND METHOD FOR PROCESSING POINT CLOUD DATA - A method for processing point cloud data according to embodiments may encode point cloud data and transmit the encoded point cloud data. The method for processing point cloud data according to embodiments may receive the point cloud data and decode the received point cloud data. | 2022-07-28 |
20220239946 | POINT CLOUD DATA TRANSMISSION DEVICE, POINT CLOUD DATA TRANSMISSION METHOD, POINT CLOUD DATA RECEPTION DEVICE, AND POINT CLOUD DATA RECEPTION METHOD - A point cloud data transmission method according to embodiments may comprise the steps of: encoding point cloud data; and/or transmitting the encoded point cloud data. A point cloud data reception method according to embodiments may comprise the steps of: receiving point cloud data; decoding the point cloud data; and/or rendering the point cloud data. | 2022-07-28 |
20220239947 | VIDEO-BASED POINT CLOUD STREAMS - Systems, methods, and instrumentalities are disclosed herein that related to video-based point cloud streams in one or more ISO Base Media File Format (ISOBMFF) container files, A container format for point cloud data is provided and the container format indicates at least a relationship between a 3D region of the point cloud and one or more video-based point cloud compression (V-PCC) tracks. The V-PCC tracks may be grouped together and linked to the 3D region to allow spatial access to the 3D region. | 2022-07-28 |
20220239948 | VIDEO SIGNAL PROCESSING METHOD AND APPARATUS USING SECONDARY TRANSFORM - A video signal decoding apparatus, comprising a processor, wherein the processor is configured to: parse a syntax element related to a secondary transform of a coding unit based on whether a prediction method of the coding unit is MIP (Matrix based Intra Prediction), check whether or not the secondary transform is applied to a transform block included in the coding unit based on the parsed syntax element, obtain one or more inverse transform coefficients based on an inverse transform of the secondary transform when the secondary transform is applied to the transform block, obtain a residual sample for the transform block based on the one or more inverse transform coefficients. | 2022-07-28 |
20220239949 | AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO ENCODING AND DECODING - There is disclosed a method, an apparatus and a computer program product for video encoding and decoding. In accordance with an embodiment the method for encoding comprises concluding that a coded video sequence starts at particular position in a bitstream, wherein the coded video sequence is a sequence of coded pictures in decoding order that is independently decodable and is followed by another coded video sequence or the end of the bitstream, and wherein the bitstream comprises access units, and an access unit comprises coded video data for a single time instance and associated other data, and an access unit comprises one or more network abstraction layer (NAL) units; and indicating in an access unit delimiter to treat the NAL unit(s) associated with the access unit delimiter as a start of a coded video sequence. | 2022-07-28 |
20220239950 | LEVEL-BASED SIGNALING OF VIDEO CODING TOOLS - An example method of video processing includes performing a conversion between a video and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies, in case a first syntax element is included in a first video unit in the bitstream representation, whether a corresponding second syntax element in a second video unit is included in the bitstream representation. | 2022-07-28 |
20220239951 | SIGNALING CODING OF TRANSFORM-SKIPPED BLOCKS - A method for performing transform skip mode (TSM) in a video decoder is provided. A video decoder receives data from a bitstream to be decoded as a plurality of video pictures. The video decoder parses the bitstream for a first syntax element in a sequence parameter set (SPS) of a current sequence of video pictures. When the first syntax element indicates that transform skip mode is allowed for the current sequence of video pictures and when transform skip mode is used for a current block in a current picture of the current sequence, the video decoder reconstructs the current block by using quantized residual signals that are not transformed. | 2022-07-28 |
20220239952 | FILTERS FOR MOTION COMPENSATION INTERPOLATION WITH REFERENCE DOWN-SAMPLING - The present disclosure provides systems and methods for processing video content using motion compensation interpolation. The methods include: in response to a target picture and a reference picture having different resolutions, applying a band-pass filter to the reference picture, to perform a motion compensated interpolation with reference down-sampling to generate a reference block; and encoding or decoding a block of the target picture using the reference block. | 2022-07-28 |
20220239953 | BANDING ARTIFACT DETECTION IN IMAGES AND VIDEOS - In various embodiments, a banding detection application generates a first set of pixel confidence values based on a first intensity difference value and first image scale associated with a first image, wherein each pixel confidence value included in the first set of pixel confidence values indicates a likelihood that a corresponding pixel included in the first image at the first image scale corresponds to banding in the first image. The banding detection application then generates a banding index corresponding to the first image based on the first set of pixel confidence values. | 2022-07-28 |
20220239954 | Filter Flags for Subpicture Deblocking - A method implemented by a video decoder and comprising: receiving, by the video decoder, a video bitstream comprising a picture and loop_filter_across_subpic_enabled_flag, wherein the picture comprises a subpicture; and applying a deblocking filter process to all subblock edges and transform block edges of the picture except edges that coincide with boundaries of the subpicture when loop_filter_across_subpic_enabled_flag is equal to 0. A method implemented by a video decoder and comprising: receiving, by the video decoder, a video bitstream comprising a picture, EDGE_VER, and loop_filter_across_subpic_enabled_flag, wherein the picture comprises a subpicture; and setting filterEdgeFlag to 0 if edgeType is equal to the EDGE_VER, a left boundary of a current coding block is a left boundary of the subpicture, and the loop_filter_across_subpic_enabled_flag is equal to 0. | 2022-07-28 |
20220239955 | IMAGE FRAME ERROR CONCEALMENT METHOD AND APPARATUS - The present disclosure discloses an image frame error concealment method including the following steps: determining whether an nth image frame has a packet loss error, and if so, not performing error concealment on the nth image frame; and performing error concealment on an (n+1)th image frame, wherein the error concealment operation is performed with reference to one or more image frames before the nth image frame, wherein n is an integer greater than or equal to 2. | 2022-07-28 |
20220239956 | Point Cloud Geometry Compression Using Octrees and Binary Arithmetic Encoding with Adaptive Look-Up Tables - An encoder is configured to compress point cloud geometry information using an octree geometric compression technique that utilizes a binary arithmetic encoder, a look-ahead table, a cache, and a context selection process, wherein encoding contexts are selected based, at least in part, on neighborhood configurations. In a similar manner, a decoder is configured to decode compressed point cloud geometry information utilizing a binary arithmetic encoder, a look-ahead table, a cache, and a context selection process. | 2022-07-28 |
20220239957 | REAL-TIME AND SECURED PICTURE/VIDEO UPLOAD VIA A CONTENT DELIVERY NETWORK - A content delivery network includes an overlay network having a plurality of cache servers. Each cache server configured to receive a request from a personal content server to register with the content delivery network, receive a request from a mobile capture device to establish communication with the personal content server, and establish a communication path through the overlay network between the mobile capture device and the personal content server. Each cache server is further configured to transfer content from the mobile capture device along the communication path to the personal content server. | 2022-07-28 |