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    APPARATUS AND METHOD AND FOR BOUNDARY PARTITION
    23.
    发明申请
    APPARATUS AND METHOD AND FOR BOUNDARY PARTITION 有权

    公开(公告)号：US20210185317A1

    公开(公告)日：2021-06-17

    申请号：US17188940

    申请日：2021-03-01

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Han GAO ,  Semih ESENLIK ,  Zhijie ZHAO ,  Anand Meher KOTRA ,  Jianle CHEN

    IPC: H04N19/122 ,  H04N19/119 ,  H04N19/60 ,  H04N19/176 ,  H04N19/44

    Abstract: A method for boundary partition of a current block is provided. The method includes obtaining a partition indicator from a received bitstream; determining whether the partition indicator indicates that the current block is to be split and whether the current block is a boundary block; and performing a non-inverse transform operation on an inside part of the current block when the partition indicator indicates that the current block is not to be split and the current block is a boundary block, wherein the inside part of the block is located within the picture. For the boundary block which is determined not to be split, a non-inverse transform operation is chosen. This avoids a normal inverse transform on the residuals of the inside part (within the picture) of the current block in the decoder, so number of blocks for the inverse transformation is decreased, and decoding complexity is thus reduced.

    OVERLAPPED SEARCH SPACE FOR BI-PREDICTIVE MOTION VECTOR REFINEMENT
    25.
    发明申请
    OVERLAPPED SEARCH SPACE FOR BI-PREDICTIVE MOTION VECTOR REFINEMENT 审中-公开

    公开(公告)号：US20200137416A1

    公开(公告)日：2020-04-30

    申请号：US16730735

    申请日：2019-12-30

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Semih ESENLIK ,  Zhijie ZHAO ,  Anand Meher KOTRA ,  Han GAO

    IPC: H04N19/573 ,  H04N19/513 ,  H04N19/533 ,  H04N19/56

    Abstract: The present disclosure relates to the performance of motion vector refinement in a search space for multi-reference inter-prediction. Two or more reference pictures are selected, one of those used for motion vector refinement. Based on an initial estimate of a motion vector to the reference picture for motion vector refinement, a search space in this reference image is constructed. Using template matching, the first motion vector is refined. The second motion vector to another reference picture is calculated using its initial estimate, the initial estimate of the first motion vector and the refined first motion vector. The search spaces used in template matching in different iterations overlap.

    ENCODER, A DECODER AND CORRESPONDING METHODS OF CHROMA INTRA MODE DERIVATION
    29.
    发明申请
    ENCODER, A DECODER AND CORRESPONDING METHODS OF CHROMA INTRA MODE DERIVATION 有权

    公开(公告)号：US20240373025A1

    公开(公告)日：2024-11-07

    申请号：US18764687

    申请日：2024-07-05

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Biao WANG ,  Semih ESENLIK ,  Anand Meher KOTRA ,  Han GAO ,  Elena Alexandrovna ALSHINA

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

    Abstract: A method of coding implemented by a decoding device, comprising obtaining a video bitstream; decoding the video bitstream to obtain an initial intra prediction mode value for chroma component of a current coding block; determining whether a ratio between a width for luma component of the current coding block and a width for chroma component of the current coding block is equal to a threshold or not; obtaining a mapped intra prediction mode value for chroma component of the current coding block according to a predefined mapping relationship and the initial intra prediction mode value, when it's determined that the ratio is equal to the threshold; obtaining a prediction sample value for chroma component of the current coding block according to the mapped intra prediction mode value.

    ENCODER, A DECODER AND CORRESPONDING METHODS USING IBC MERGE LIST
    30.
    发明公开
    ENCODER, A DECODER AND CORRESPONDING METHODS USING IBC MERGE LIST 审中-公开

    公开(公告)号：US20240323427A1

    公开(公告)日：2024-09-26

    申请号：US18660485

    申请日：2024-05-10

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Han GAO ,  Semih ESENLIK ,  Biao WANG ,  Anand Meher KOTRA ,  Jianle CHEN

    IPC: H04N19/513 ,  H04N19/176

    CPC classification number: H04N19/513 ,  H04N19/176

    Abstract: The present disclosure provides methods and devices of construct a candidate merge list for Intra block copy (IBC) mode, the method comprising: inserting a block vector of a left neighboring block of a current block into an initial merge list, when the left neighboring block is available and the left neighboring block is using IBC mode; inserting a block vector of an above neighboring block of the current block into the initial merge list, when the above neighboring block is available, the above neighboring block is using IBC mode and the block vector of the above neighboring block is not same as the block vector of the left neighboring block; inserting a block vector of the last candidate in a history based motion vector predictor (HMVP) into the initial merge list; obtaining a block vector of the current block according to the initial merge list.

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