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    INTERACTION BETWEEN IBC AND BIO
    175.
    发明申请
    INTERACTION BETWEEN IBC AND BIO 有权

    公开(公告)号：US20220078452A1

    公开(公告)日：2022-03-10

    申请号：US17529607

    申请日：2021-11-18

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

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

    IPC: H04N19/176 ,  H04N19/107 ,  H04N19/583 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/105 ,  H04N19/117 ,  H04N19/119

    Abstract: Devices, systems and methods for applying intra-block copy (IBC) in video coding are described. In general, methods for integrating IBC with existing motion compensation algorithms for video encoding and decoding are described. In a representative aspect, a method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using a motion compensation algorithm, and encoding, based on the determining, the current block by selectively applying an intra-block copy to the current block. In a representative aspect, another method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using an intra-block copy, and encoding, based on the determining, the current block by selectively applying a motion compensation algorithm to the current block.

    INTRA CODED VIDEO USING QUANTIZED RESIDUAL DIFFERENTIAL PULSE CODE MODULATION CODING
    179.
    发明申请
    INTRA CODED VIDEO USING QUANTIZED RESIDUAL DIFFERENTIAL PULSE CODE MODULATION CODING 有权

    公开(公告)号：US20220038687A1

    公开(公告)日：2022-02-03

    申请号：US17502233

    申请日：2021-10-15

    Applicant: Bytedance Inc.

    Inventor： Weijia ZHU ,  Li ZHANG ,  Jizheng XU ,  Hsiao Chiang CHUANG

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/70 ,  H04N19/176

    Abstract: Video coding and decoding methods are described. In example method includes performing a conversion between a current video block of a video and a bitstream representation of the current video block by determining a first intra coding mode to be stored which is associated with the current video block using a differential coding mode, where the first intra coding mode associated with the current video block is determined according to a second prediction mode used by the differential coding mode, and where, in the differential coding mode, a difference between a quantized residual of an intra prediction of the current video block and a prediction of the quantized residual is represented in the bitstream representation for the current video block using a differential pulse coding modulation (DPCM) representation.

    MATRIX-BASED INTRA PREDICTION USING FILTERING
    180.
    发明申请
    MATRIX-BASED INTRA PREDICTION USING FILTERING 有权

    公开(公告)号：US20220014783A1

    公开(公告)日：2022-01-13

    申请号：US17478511

    申请日：2021-09-17

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

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

    IPC: H04N19/593 ,  H04N19/176 ,  H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/184

    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 reference boundary samples located to a left of the current video block and located to a top of the current video block, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, where instead of reduced boundary samples calculated from the reference boundary samples of the current video block in the boundary downsampling operation, the reference boundary samples are directly used for a prediction process in the upsampling operation.

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