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    Transform Coefficient Dequantization Method and Apparatus, and Decoding Device
    81.
    发明申请
    Transform Coefficient Dequantization Method and Apparatus, and Decoding Device 审中-公开

    公开(公告)号：US20180255301A1

    公开(公告)日：2018-09-06

    申请号：US15970638

    申请日：2018-05-03

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin Zhao ,  Haitao Yang

    IPC: H04N19/124 ,  H04N19/44 ,  H04N19/122 ,  H04N19/18 ,  H04N19/91

    CPC classification number: H04N19/124 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/44 ,  H04N19/91

    Abstract: A unit size of a to-be-processed unit corresponding to a first transform coefficient set is determined using division information. Then, a quantization regulation factor for the first transform coefficient set is determined according to a first preset algorithm and the unit size of the to-be-processed unit, and with the first preset algorithm, the quantization regulation factor decreases progressively with the size of the to-be-processed unit. Dequantization processing is performed on a transform coefficient in the first transform coefficient set according to a second preset algorithm using the quantization regulation factor. Therefore, a decoding device adaptively determines the quantization regulation factor for the first transform coefficient set according to the unit size of the to-be-processed unit, and then performs dequantization processing on the transform coefficient in the first transform coefficient set using the determined quantization regulation factor.

    Image Processing Method and Apparatus
    84.
    发明申请
    Image Processing Method and Apparatus 审中-公开

    公开(公告)号：US20170310998A1

    公开(公告)日：2017-10-26

    申请号：US15645052

    申请日：2017-07-10

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin Zhao ,  Haitao Yang

    IPC: H04N19/60 ,  H04N19/18 ,  H04N19/182 ,  H04N19/50

    CPC classification number: H04N19/60 ,  H04N19/136 ,  H04N19/18 ,  H04N19/182 ,  H04N19/50 ,  H04N19/61 ,  H04N19/80

    Abstract: An image processing method and apparatus includes transforming a first image to obtain a first transform coefficient set; transforming a second image, or transforming a difference image between the first image and a second image, to obtain a second transform coefficient set; selecting a first group of transform coefficients from the first transform coefficient set according to magnitudes of transform coefficients in the first transform coefficient set, where magnitudes of transform coefficients in the first group of transform coefficients meet a preset threshold condition; determining an image difference between the first image and the second image according to the first group of transform coefficients and the second transform coefficient set; and processing the first image and the second image according to the image difference.

    Inter prediction method and apparatus
    87.
    发明授权
    Inter prediction method and apparatus 有权

    公开(公告)号：US12200224B2

    公开(公告)日：2025-01-14

    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

    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.

    Intra prediction method and device
    88.
    发明授权
    Intra prediction method and device 有权

    公开(公告)号：US12184839B2

    公开(公告)日：2024-12-31

    申请号：US18456528

    申请日：2023-08-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Xiang Ma ,  Jianle Chen ,  Yin Zhao ,  Haitao Yang

    IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

    Abstract: An intra prediction method by using cross component liner prediction mode (CCLM), includes: determining a luma block corresponding to a current chroma block; obtaining luma reference samples of the luma block based on determining L available chroma reference samples of the current chroma block, wherein the obtained luma reference samples of the luma block are down-sampled luma reference samples; calculating linear model coefficients based on the luma reference samples and chroma reference samples that correspond to the luma reference samples; and obtaining a prediction for the current chroma block based on the linear model coefficients and values of a down-sampled luma block of the luma block.

    Encoding method and apparatus
    89.
    发明授权
    Encoding method and apparatus 有权

    公开(公告)号：US12167009B2

    公开(公告)日：2024-12-10

    申请号：US17973151

    申请日：2022-10-25

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

    IPC: H04N19/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625

    Abstract: A video processing method includes: obtaining prediction information of a CU; obtaining, when the CU comprises only one residual TU and a size of the residual TU is less than a size of the CU, a TU partitioning mode of the CU and a residual position of the residual TU, wherein the TU partitioning mode and the residual position are used to determine a horizontal transform type and a vertical transform type; obtaining transform coefficients of the residual TU based on the horizontal transform type and the vertical transform type; and generating a bitstream that is for storing or transmitting and that includes the prediction information, a first flag that indicates the TU partitioning mode, a second flag that indicates the residual position, and the transform coefficients.

    Method and apparatus for determining prediction mode with mode status
    90.
    发明授权
    Method and apparatus for determining prediction mode with mode status 有权

    公开(公告)号：US12160566B2

    公开(公告)日：2024-12-03

    申请号：US17369703

    申请日：2021-07-07

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin Zhao ,  Haitao Yang ,  Lian Zhang

    IPC: H04N19/107 ,  G06T9/40 ,  H04N19/124 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

    Abstract: A prediction mode determining method and apparatus are described. A prediction mode status of a child node of a target node is determined based on an area and a split manner of the target node, where the prediction mode status includes intra prediction mode only and inter prediction mode only. Further, a prediction mode of the child node is determined based on the prediction mode status of the child node. In this way, a same prediction mode is used for all child nodes obtained by splitting the target node. This facilitates pipeline processing of hardware, increases a subsequent processing speed, and improves video coding efficiency.

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