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    INTERACTION BETWEEN IBC AND BIO
    121.
    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.

    MATRIX-BASED INTRA PREDICTION USING FILTERING
    125.
    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.

    INTERACTION BETWEEN IBC AND AFFINE
    127.
    发明申请
    INTERACTION BETWEEN IBC AND AFFINE 有权

    公开(公告)号：US20210392341A1

    公开(公告)日：2021-12-16

    申请号：US17412771

    申请日：2021-08-26

    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.

    DIRECTION-BASED PREDICTION FOR INTRA BLOCK COPY IN VIDEO CODING
    130.
    发明申请
    DIRECTION-BASED PREDICTION FOR INTRA BLOCK COPY IN VIDEO CODING 有权

    公开(公告)号：US20210368178A1

    公开(公告)日：2021-11-25

    申请号：US17362341

    申请日：2021-06-29

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

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

    IPC: H04N19/132 ,  H04N19/423 ,  H04N19/96 ,  H04N19/176

    Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.

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