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    INTER PREDICTION METHOD AND APPARATUS
    101.
    发明申请
    INTER PREDICTION METHOD AND APPARATUS 有权

    公开(公告)号：US20250133218A1

    公开(公告)日：2025-04-24

    申请号：US18940455

    申请日：2024-11-07

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Huanbang CHEN ,  Haitao YANG ,  Jianle CHEN

    IPC: H04N19/159 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/82

    Abstract: This application discloses an inter prediction method and apparatus. The method includes: determining a plurality of first picture blocks in a to-be-processed picture block based on a preset picture split width, a preset picture split height, and a width and a height of the to-be-processed picture block; separately performing bi-directional optical flow prediction on the plurality of first picture blocks to obtain a predictor of each first picture block; and obtaining a predictor of the to-be-processed picture block with a combination of the predictors of the plurality of first picture blocks. The apparatus includes a determining module, a prediction module, and a combination module. In this application, complexity of implementing inter prediction can be reduced, and processing efficiency can be improved.

    CHROMA BLOCK PREDICTION METHOD AND APPARATUS
    102.
    发明申请
    CHROMA BLOCK PREDICTION METHOD AND APPARATUS 有权

    公开(公告)号：US20250097437A1

    公开(公告)日：2025-03-20

    申请号：US18902428

    申请日：2024-09-30

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Xiang MA ,  Jianle CHEN ,  Haitao YANG

    IPC: H04N19/196 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

    Abstract: This application provides a chroma block prediction method and apparatus. The method includes: obtaining a maximum luma value and a minimum luma value based on luma samples corresponding to neighboring samples of a target chroma block, and calculating a first difference between the maximum luma value and the minimum luma value; if the first difference is not equal to 0, processing the first difference based on a quantity of significant bits of the first difference and a first preset bit depth to obtain a second difference; and determining, based on a first chroma value, a second chroma value, and the second difference, an intra prediction model parameter corresponding to the target chroma block, and determining prediction information of the target chroma block based on the intra prediction model parameter and luma reconstruction information corresponding to the target chroma block.

    METHOD AND APPARATUS FOR INTRA PREDICTION
    107.
    发明公开
    METHOD AND APPARATUS FOR INTRA PREDICTION 审中-公开

    公开(公告)号：US20240015304A1

    公开(公告)日：2024-01-11

    申请号：US18171458

    申请日：2023-02-20

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

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

    CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

    Abstract: Apparatuses and methods for intra predicting a block are described. The method of intra predicting a current block can include obtaining a predicted sample value from one or more reference sample values by using an intra prediction mode, obtaining at least one additional reference sample value in accordance with the intra prediction mode, and obtaining a thresholded additional reference sample value based on the additional reference sample value. The method can also include calculating an additional value from the thresholded additional reference sample value, multiplying the predicted sample value by a sample weighting factor, resulting in a weighted predicted sample value, adding the additional value to the weighted predicted sample value, resulting in a non-normalized predicted sample value, and normalizing the non-normalized predicted sample value, resulting in a normalized predicted sample values. The accuracy for the intra prediction is thus increased.

    METHOD AND APPARATUS FOR INTRA SMOOTHING
    108.
    发明申请
    METHOD AND APPARATUS FOR INTRA SMOOTHING 有权

    公开(公告)号：US20230047926A1

    公开(公告)日：2023-02-16

    申请号：US17876758

    申请日：2022-07-29

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

    IPC: H04N19/159 ,  H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82

    Abstract: Devices and methods of intra prediction of a block of a picture are provided. In various embodiments, information indicating an Intra Sub-Partitions (ISP) split type can be obtained. A value of a filter flag can be set based on the ISP split type. For instance, the value of the filter flag can be set to 0 when the ISP split type does not indicate not to split a current block. A set of coefficients of an interpolation filter can then be selected according to the value of the filter flag. For instance, fG coefficients or fC coefficients can be selected based on the value of the filter flag. Still in those embodiment, the selected set of coefficients can be applied to reference samples. In some embodiments, the method removes mode dependency during selection of interpolation filter type. This could increase encoding or decoding efficiency.

    METHOD OF EFFICIENT SIGNALLING OF CBF FLAGS
    110.
    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.

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