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    HARMONIZATION BETWEEN DIFFERENT VIDEO PROCESS MODE
    71.
    发明申请
    HARMONIZATION BETWEEN DIFFERENT VIDEO PROCESS MODE 有权

    公开(公告)号：US20210360232A1

    公开(公告)日：2021-11-18

    申请号：US17389037

    申请日：2021-07-29

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

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

    IPC: H04N19/107 ,  H04N19/176 ,  H04N19/96

    Abstract: The present application relates to harmonization between different video process mode. A method for processing video includes: determining, during a conversion between a first block in a video data and a bitstream representation of the first block, one or more coded modes of one or more second blocks; determining, based on the one or more coded modes of the one or more second blocks, a coded mode constraint of the first block; and performing, at least by applying the coded mode constraint of the first block, the conversion; wherein the one or more second blocks comprise at least one of an adjacent block, a non-adjacent block, and a reference block of the first block.

    INTRA BLOCK COPY MODE WITH DUAL TREE PARTITION
    76.
    发明申请
    INTRA BLOCK COPY MODE WITH DUAL TREE PARTITION 有权

    公开(公告)号：US20210314610A1

    公开(公告)日：2021-10-07

    申请号：US17353612

    申请日：2021-06-21

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

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

    IPC: H04N19/593 ,  H04N19/96 ,  H04N19/176 ,  H04N19/184

    Abstract: The application relates to an intra block copy mode with dual tree partition. A method of video processing is disclosed. The method of video processing includes: determining, during a conversion between a current video block and a bitstream representation of the current video block, a block vector for the current video block; and performing, at least based on the block vector, the conversion, wherein when the current video block is coded with a coding mode using a reference block for prediction pointing to a same picture that the current video block is located in, and the current video block is a first type of block, the block vector is derived from at least one second type of block.

    CROSS-COMPONENT CODING ORDER DERIVATION
    77.
    发明申请
    CROSS-COMPONENT CODING ORDER DERIVATION 有权

    公开(公告)号：US20210306631A1

    公开(公告)日：2021-09-30

    申请号：US17346486

    申请日：2021-06-14

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

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

    IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96 ,  H04N19/103 ,  H04N19/186 ,  H04N19/593

    Abstract: Method and apparatus for using block size restrictions in video decoding are described. In a representative aspect, a method for video decoding includes receiving a bitstream representation of video data including a block wherein the block comprises samples associated with a first component and second components, wherein samples associated with the first component of the block have a dimension M×N; and decoding the first component and the second components of the block; wherein decoding the first component of the block comprises, based on the dimension, decoding a plurality of sub-blocks for the first component of the block, and the plurality of the sub-blocks are generated by performing a splitting operation only on the samples associated with the first component of the block and not on the samples associated with the second components of the block.

    CONTEXT-BASED INTRA PREDICTION
    78.
    发明申请
    CONTEXT-BASED INTRA PREDICTION 有权

    公开(公告)号：US20210297694A1

    公开(公告)日：2021-09-23

    申请号：US17338601

    申请日：2021-06-03

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

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

    IPC: H04N19/593 ,  H04N19/176 ,  H04N19/186

    Abstract: A method for video processing is provided. The method includes performing downsampling on chroma and luma samples of a neighboring block of the current video block; determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, parameters of cross-component linear model (CCLM) based on the downsampled chroma and luma samples obtained from the downsampling; applying the CCLM on luma samples located in a luma block corresponding to the current video block to derive prediction values of the current video block; and performing the conversion based on the prediction values.

    TRANSFORM CODING BASED ON MATRIX-BASED INTRA PREDICTION
    79.
    发明申请
    TRANSFORM CODING BASED ON MATRIX-BASED INTRA PREDICTION 有权

    公开(公告)号：US20210297672A1

    公开(公告)日：2021-09-23

    申请号：US17343086

    申请日：2021-06-09

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

    Inventor： Zhipin DENG ,  Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Jizheng XU

    IPC: H04N19/132 ,  H04N19/105 ,  H04N19/12 ,  H04N19/60 ,  H04N19/159 ,  H04N19/176

    Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block according to a rule, where the rule specifies a relationship between applicability of a matrix based intra prediction (MIP) mode or a transform mode during the conversion, where the MIP mode includes determining a prediction block of the current video block by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, and where the transform mode specifies use of a transform operation for the determining the prediction block for the current video block.

    CALCULATION IN MATRIX-BASED INTRA PREDICTION
    80.
    发明申请
    CALCULATION IN MATRIX-BASED INTRA PREDICTION 有权

    公开(公告)号：US20210297671A1

    公开(公告)日：2021-09-23

    申请号：US17342996

    申请日：2021-06-09

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

    Inventor： Zhipin DENG ,  Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Jizheng XU

    IPC: H04N19/132 ,  H04N19/176 ,  H04N19/159 ,  H04N19/105

    Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block using a matrix based intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, where the performing the conversion includes deriving, according to a rule, boundary samples by applying a left bit shift operation or a right bit shift operation on a sum of at least one reference boundary sample, and where the rule determines whether to apply the left bit shift or the right bit shift operation.

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