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    Method and Apparatus for Prediction
    51.
    发明申请
    Method and Apparatus for Prediction 有权

    公开(公告)号：US20210203928A1

    公开(公告)日：2021-07-01

    申请号：US17201228

    申请日：2021-03-15

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/117 ,  H04N19/593 ,  H04N19/503 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/132

    Abstract: The present disclosure provides methods and devices for intra-prediction of a current block in video encoding or decoding. The method comprises: performing intra-prediction processing of the current block according to a directional intra-prediction mode, comprising applying reference sample filtering or subpixel interpolation filtering to reference samples in one or more reference blocks, wherein the directional intra-prediction mode is classified into one of the following groups: (A) vertical or horizontal modes, (B) directional modes including diagonal modes that represent angles which are multiples of 45 degrees, (C) remaining directional modes; if the directional intra-prediction mode is classified as belonging to group B, a reference sample filter is applied to the reference samples; if the directional intra-prediction mode is classified as belonging to group C, an intra reference sample interpolation filter is applied to the reference samples.

    DEVICES AND METHODS FOR VIDEO CODING
    54.
    发明申请
    DEVICES AND METHODS FOR VIDEO CODING 审中-公开

    公开(公告)号：US20190238843A1

    公开(公告)日：2019-08-01

    申请号：US16383256

    申请日：2019-04-12

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY

    IPC: H04N19/11 ,  H04N19/107 ,  H04N19/593 ,  H04N19/503 ,  H04N19/467

    CPC classification number: H04N19/11 ,  H04N19/107 ,  H04N19/176 ,  H04N19/467 ,  H04N19/503 ,  H04N19/593

    Abstract: A frame of encoded video data is partitioned into a plurality of video coding blocks, including a current video coding block, the current video coding block comprising a plurality of sub-blocks. The encoded video data is decoded to provide a residual video coding block associated with the current video coding block. Parameter adjustment information is extracted from the encoded video data. A predicted video coding block is generated by generating for each sub-block of the current video coding block a predicted sub-block. A prediction parameter is defined for the current video coding block on the basis of the parameter adjustment information and the predicted sub-block is generated on the basis of the adjusted prediction parameter. The current video coding block is restored on the basis of the residual video coding block and the predicted video coding block.

    METHOD AND APPARATUS FOR SCAN ORDER SELECTION
    56.
    发明申请
    METHOD AND APPARATUS FOR SCAN ORDER SELECTION 审中-公开

    公开(公告)号：US20190020881A1

    公开(公告)日：2019-01-17

    申请号：US16100984

    申请日：2018-08-10

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY

    IPC: H04N19/176 ,  H04N19/44 ,  H04N19/18 ,  H04N19/159

    Abstract: The disclosure proposes a decoder for decoding coefficients of blocks of a video sequence from a bitstream. The decoder comprises a decoding module configured to decode one or more coefficient vectors of each block from the bitstream, a check module configured to reconstruct, for at least one block, hidden information from one or more coefficients of that block, the hidden information constituting or forming part of scan order information associated with that block, a scan order selector configured to select a scan order for each block from a set of scan orders, preferably from a set of pre-defined and generated scan orders, on the basis of the scan order information associated with that block, and a deserializer configured to inverse scan, for each block, the one or more coefficient vectors of that block according to the scan order selected for that block so as to obtain a coefficient matrix.

    METHOD AND APPARATUS FOR INTRA PREDICTION
    58.
    发明申请
    METHOD AND APPARATUS FOR INTRA PREDICTION 有权

    公开(公告)号：US20250008114A1

    公开(公告)日：2025-01-02

    申请号：US18828954

    申请日：2024-09-09

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: 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.

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