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    SUB-BLOCK BASED MOTION CANDIDATE SELECTION AND SIGNALING
    201.
    发明申请
    SUB-BLOCK BASED MOTION CANDIDATE SELECTION AND SIGNALING 有权

    公开(公告)号：US20210274188A1

    公开(公告)日：2021-09-02

    申请号：US17321802

    申请日：2021-05-17

    Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

    Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Jizheng XU ,  Yue WANG

    IPC: H04N19/139 ,  H04N19/176 ,  H04N19/46

    Abstract: Devices, systems and methods for digital video coding, which include sub-block based inter prediction methods, are described. An exemplary method for video processing includes determining, for a conversion between a current block of video and a bitstream representation of the video, a maximum number of candidates in a sub-block based merge candidate list and/or whether to add sub-block based temporal motion vector prediction (SbTMVP) candidates to the sub-block based merge candidate list based on whether temporal motion vector prediction (TMVP) is enabled for use during the conversion or whether a current picture referencing (CPR) coding mode is used for the conversion, and performing, based on the determining, the conversion.

    OVERLAPPED BLOCK MOTION COMPENSATION
    203.
    发明申请
    OVERLAPPED BLOCK MOTION COMPENSATION 有权

    公开(公告)号：US20210243471A1

    公开(公告)日：2021-08-05

    申请号：US17238639

    申请日：2021-04-23

    Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

    Inventor： Hongbin LIU ,  Li ZHANG ,  Kai ZHANG ,  Yue WANG

    IPC: H04N19/583 ,  H04N19/513 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

    Abstract: The present disclosure relates to improvement on overlapped block motion compensation. A method for video processing comprises: determining, during a conversion between a current block and a bitstream representation of the current block, a motion vector for a first sub-block inside the current block; using overlapped block motion compensation (OBMC) mode to perform the conversion; wherein the OBMC mode uses intermediate prediction values of the first sub-block based on the motion vector of the first sub-block and prediction values of at least a second video unit that is neighboring the first sub-block to generate final prediction values for the first sub-block; wherein a sub-block size of the first sub-block is based on block size, block shape, motion information, or reference picture of the current block.

    REPRESENTATION OF AFFINE MODEL
    205.
    发明申请
    REPRESENTATION OF AFFINE MODEL 有权

    公开(公告)号：US20210211714A1

    公开(公告)日：2021-07-08

    申请号：US17193397

    申请日：2021-03-05

    Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

    Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Yue WANG

    IPC: H04N19/513 ,  H04N19/527

    Abstract: A method, a video processing apparatus and computer-readable program medium for video process is disclosed. A method of video processing includes storing, during a conversion between a current block of video and a bitstream representation of the current block, affine model parameters for the current block; and performing the conversion using the affine model parameters, wherein the affine model parameters are derived at least from motion vectors of control points of the current block.

    OVERLAPPED BLOCK MOTION COMPENSATION USING TEMPORAL NEIGHBORS
    209.
    发明申请
    OVERLAPPED BLOCK MOTION COMPENSATION USING TEMPORAL NEIGHBORS 有权

    公开(公告)号：US20210195205A1

    公开(公告)日：2021-06-24

    申请号：US17173601

    申请日：2021-02-11

    Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

    Inventor： Hongbin LIU ,  Li ZHANG ,  Kai ZHANG ,  Yue WANG

    IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/51 ,  H04N19/31 ,  H04N19/176

    Abstract: Devices, systems and methods for digital video coding, which includes an overlapped block motion compensation (OBMC) process based on temporal neighbors, are described. An exemplary method for video processing includes generating, based on a weighted sum of at least two temporary prediction blocks, a prediction block for a current video block, a first of the at least two temporary prediction blocks being based on a first motion information associated with the current video block, a second of the at least two temporary prediction blocks being based on a second motion information associated with at least one neighboring block of the current video block, and the at least one neighboring block including a temporally neighboring block, and performing, based on the prediction block, a conversion between the current video block and a bitstream representation of the current video block.

    BINARIZATION OF PARTITIONING RELATED TO EXTENDED QUADTREE
    210.
    发明申请
    BINARIZATION OF PARTITIONING RELATED TO EXTENDED QUADTREE 有权

    公开(公告)号：US20210185362A1

    公开(公告)日：2021-06-17

    申请号：US17183855

    申请日：2021-02-24

    Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

    Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Yue WANG

    IPC: H04N19/96 ,  H04N19/119 ,  H04N19/184

    Abstract: A method of video processing includes determining, for a conversion between a coded representation of a video block of a video region and the video block, that an extended quadtree (EQT) partition is enabled for at least one video block of the video region, and performing the conversion based on the determining. The EQT partition splits the video block in multiple sub-blocks such that at least one of the multiple sub-blocks has a size that is different from a half width of the video block times a half height of the video block. The coded representation of the video block is represented using a codeword from a table that includes mapping between codewords and partition types.

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