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    DEVICES AND METHODS FOR IMAGE AND VIDEO CODING
    52.
    发明申请
    DEVICES AND METHODS FOR IMAGE AND VIDEO CODING 审中-公开

    公开(公告)号：US20200236351A1

    公开(公告)日：2020-07-23

    申请号：US16844740

    申请日：2020-04-09

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/109 ,  H04N19/61 ,  H04N19/503 ,  H04N19/176

    Abstract: An apparatus is configured to determine an adopted intra prediction mode on the basis of a most probable modes list, a selected modes list and a non-selected modes list having a first portion and a second portion, wherein the adopted intra prediction mode is one of a plurality of intra prediction modes comprising a plurality of angular intra prediction modes for predicting sample values of a current picture block. The apparatus includes a processor configured to generate the first portion of the non-selected modes list by including one or more angular intra prediction modes determined to be close to a respective angular intra prediction mode of the most probable modes list and the selected modes list. The processor is further configured to determine the adopted intra prediction mode.

    APPARATUS AND METHOD FOR DE-BLOCKING FILTERING
    53.
    发明申请
    APPARATUS AND METHOD FOR DE-BLOCKING FILTERING 审中-公开

    公开(公告)号：US20190356930A1

    公开(公告)日：2019-11-21

    申请号：US16531898

    申请日：2019-08-05

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Anand Meher KOTRA ,  Semih ESENLIK ,  Zhijie ZHAO

    IPC: H04N19/86 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

    Abstract: A system and method for processing a video stream are provided. When coding or decoding a video stream a de-blocking filtering may be applied for reducing discontinuities caused by use of a block-based video coding. The de-blocking filtering is performed using a filter grid. The size of the filter grid is chosen adaptively based on the processing parameters. The adaptive size of the filtering grid is determined based on the number of samples used and modified in de-blocking filtering of an edge of a coding block. The filtering grid may be used both for vertical and horizontal edge filtering.

    ENCODER, A DECODER AND CORRESPONDING METHODS OF CHROMA INTRA MODE DERIVATION
    57.
    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
    58.
    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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