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    CHROMA BLOCK PREDICTION METHOD AND APPARATUS
    1.
    发明公开
    CHROMA BLOCK PREDICTION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20240195984A1

    公开(公告)日：2024-06-13

    申请号：US18581610

    申请日：2024-02-20

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Xiang MA ,  Fan MU ,  Yin ZHAO ,  Haitao YANG

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

    CPC classification number: H04N19/159 ,  H04N19/132 ,  H04N19/176

    Abstract: This application provides a chroma block prediction method and apparatus. The method includes: obtaining chroma values of chroma samples; obtaining, luma values of luma samples corresponding to the chroma samples; obtaining, from the luma values, a first luma set and a second luma set; grouping the chroma values into a first chroma set and a second chroma set; determining a scaling coefficient in a linear model based on an average value of luma values in the first luma set, an average value of luma values in the second luma set, an average value of chroma values in the first chroma set, and an average value of chroma values in the second chroma set; determining, based on the scaling coefficient, an offset factor in the linear model; and determining prediction information of the chroma block based on the scaling coefficient and the offset factor.

    INTER PREDICTION METHOD AND APPARATUS
    3.
    发明公开
    INTER PREDICTION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20230164328A1

    公开(公告)日：2023-05-25

    申请号：US18150742

    申请日：2023-01-05

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Weiwei XU ,  Haitao YANG ,  Yin ZHAO

    IPC: H04N19/159 ,  H04N19/176 ,  H04N19/184

    CPC classification number: H04N19/159 ,  H04N19/176 ,  H04N19/184

    Abstract: Inter prediction method and apparatus are disclosed to resolve problems in the conventional technology that prediction samples obtained in an inter prediction mode are spatially discontinuous, prediction efficiency is affected, and prediction residual energy is relatively high. The method includes: parsing a bitstream to obtain motion information of a to-be-processed picture block; performing motion compensation on the to-be-processed picture block based on the obtained motion information, to obtain a prediction block of the to-be-processed picture block, where the prediction block of the to-be-processed picture block includes a prediction value of a target sample; and performing weighting calculation on one or more reconstructed values of one or more reference samples and the prediction value of the target sample, to update the prediction value of the target sample, where the reference sample(s) have a preset spatial position relationship with the target sample.

    VIDEO DECODING METHOD AND VIDEO DECODER
    4.
    发明申请
    VIDEO DECODING METHOD AND VIDEO DECODER 有权

    公开(公告)号：US20220329839A1

    公开(公告)日：2022-10-13

    申请号：US17851378

    申请日：2022-06-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Yin ZHAO ,  Haitao YANG

    IPC: H04N19/44 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176 ,  H04N19/169

    Abstract: The present disclosure discloses a video decoding method and a video decoder. The method includes: parsing coding tree split information to obtain a current node; determining coordinates of an upper-left corner of a region covered by a current quantization group based on a depth N of the current node; obtaining a QP delta of a current CU in the region covered by the current quantization group; and obtaining a reconstructed picture of the current CU based on the QP delta of the current CU.

    METHOD OF EFFICIENT SIGNALLING OF CBF FLAGS
    5.
    发明申请
    METHOD OF EFFICIENT SIGNALLING OF CBF FLAGS 有权

    公开(公告)号：US20220295082A1

    公开(公告)日：2022-09-15

    申请号：US17830875

    申请日：2022-06-02

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Roman Igorevich CHERNYAK ,  Yin ZHAO ,  Sergey Yurievich IKONIN ,  Jianle CHEN

    IPC: H04N19/186 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60 ,  H04N19/70

    Abstract: A method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax and a coding unit syntax, the transform unit syntax includes a value of a first flag and a value of a second flag related to, respectively, a first chroma transform block and a second chroma transform block of a current transform unit or a current sub-transform unit within the current transform unit, the first or second flag specifies whether the first or second chroma transform block contains at least one transform coefficient levels not equal to 0, the coding unit syntax includes a value of a third flag specifying whether a transform tree structure is present or not; and deriving a value of a fourth flag based on the values of the first, second, and third flags, the fourth flag specifies whether a luma transform block contains at least one transform coefficient levels not equal to 0.

    PICTURE PARTITIONING METHOD AND APPARATUS
    10.
    发明申请
    PICTURE PARTITIONING METHOD AND APPARATUS 有权

    公开(公告)号：US20220329795A1

    公开(公告)日：2022-10-13

    申请号：US17734829

    申请日：2022-05-02

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN ,  Lian ZHANG

    IPC: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186

    Abstract: A picture partitioning method and apparatus are described. The method includes determining a split mode of a current node, where the current node includes a luma block and a chroma block. The method further includes determining, based on the split mode of the current node and a size of the current node, that the chroma block of the current node is not further split. In accordance with the chroma block of the current node not being further split, the method includes splitting the luma block of the current node based on the split mode of the current node. In accordance with the chroma block of the current node not being further split, the method may be used to split only the luma block of the current node, thereby improving encoding and decoding efficiency, reducing a maximum throughput of a codec, and facilitating implementation of the codec.

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