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    AN ENCODER, A DECODER AND CORRESPONDING METHODS OF INTRA PREDICTION
    91.
    发明公开
    AN ENCODER, A DECODER AND CORRESPONDING METHODS OF INTRA PREDICTION 审中-实审

    公开(公告)号：EP4340367A2

    公开(公告)日：2024-03-20

    申请号：EP24155472.4

    申请日：2020-04-27

    申请人： Huawei Technologies Co., Ltd.

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

    IPC分类号： H04N19/70

    摘要： The present disclosure provides methods and devices for intra prediction. A method of coding implemented by a decoding device, comprising: setting a value of candidate intra prediction mode of a current block to be a default value, wherein the current block is predicted using an intra prediction mode but not a Matrix-based Intra Prediction, MIP, mode and a neighboring block adjacent to the current block is used to derive the value of candidate intra prediction mode of the current block and is predicted using MIP mode; obtaining a value of the intra prediction mode of the current block according to the default value

    MOTION VECTOR REFINEMENT FOR MULTI-REFERENCE PREDICTION
    93.
    发明公开
    MOTION VECTOR REFINEMENT FOR MULTI-REFERENCE PREDICTION 审中-公开

    公开(公告)号：EP4319154A2

    公开(公告)日：2024-02-07

    申请号：EP23199589.5

    申请日：2018-03-29

    申请人： Huawei Technologies Co., Ltd.

    发明人： ESENLIK, Semih ,  KOTRA, Anand Meher ,  ZHAO, Zhijie

    IPC分类号： H04N19/109

    摘要： The present invention 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.

    AN ENCODER, A DECODER AND CORRESPONDING METHODS FOR INTRA PREDICTION
    95.
    发明公开
    AN ENCODER, A DECODER AND CORRESPONDING METHODS FOR INTRA PREDICTION 审中-公开

    公开(公告)号：EP4277269A2

    公开(公告)日：2023-11-15

    申请号：EP23200275.8

    申请日：2020-03-23

    申请人： Huawei Technologies Co., Ltd.

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

    IPC分类号： H04N19/13

    摘要： Devices and methods for Intra prediction are provided. The method includes: obtaining a value of an indication information of a current block. When the value of the indication information indicates the intra prediction mode of the current block is not comprised in the set of most probable modes, deriving the intra prediction mode IntraPredModeY[ xCb ][ yCb ] of the current block by the following ordered steps: i. IntraPredModeY[ xCb ][ yCb ] is set equal to intra_luma_mpm_remainder[ xCb ][ yCb ], ii. The value of IntraPredModeY[ xCb ][ yCb ] is incremented by one. The method can improve the efficiency to determine the intra prediction mode of the current block.

    EARLY TERMINATION FOR OPTICAL FLOW REFINEMENT
    96.
    发明公开
    EARLY TERMINATION FOR OPTICAL FLOW REFINEMENT 审中-公开

    公开(公告)号：EP4243418A3

    公开(公告)日：2023-10-25

    申请号：EP23184185.9

    申请日：2020-02-21

    申请人： Huawei Technologies Co., Ltd.

    发明人： ESENLIK, Semih ,  SETHURAMAN, Sriram ,  A, Jeeva Raj ,  KOTECHA, Sagar

    IPC分类号： H04N19/513 ,  H04N19/557

    摘要： It is provided a method of video coding implemented in a decoding device or an encoding device, the method comprising: obtaining initial motion vectors for a current block;
    obtaining first predictions for a sample value in the current block based on the initial motion vectors; calculating a first matching cost according to the first predictions; determining whether an optical flow refinement process should be performed or not, according to at least one preset condition, the at least one preset condition comprising a condition of whether the calculated first matching cost is equal to or larger than a threshold; and performing an optical flow refinement process for obtaining a final inter prediction for the sample value in the current block, when it is determined that the optical flow refinement process should be performed.

    AN ENCODER, A DECODER AND CORRESPONDING METHODS USING INTRA MODE CODING FOR INTRA PREDICTION
    99.
    发明公开
    AN ENCODER, A DECODER AND CORRESPONDING METHODS USING INTRA MODE CODING FOR INTRA PREDICTION 审中-公开

    公开(公告)号：EP4203471A1

    公开(公告)日：2023-06-28

    申请号：EP23156741.3

    申请日：2020-02-21

    申请人： Huawei Technologies Co., Ltd.

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

    IPC分类号： H04N19/11 ,  H04N19/593

    摘要： It is provided a method of prediction coding of a current block implemented by a decoding device or an encoding device, comprising: obtaining an intra prediction mode of a left neighbor block of the current block; obtaining an intra prediction mode of an above neighbor block of the current block; constructing a Most Probable Mode, MPM, list of intra prediction modes for the current block, the MPM list comprising at least 5 entries of intra prediction modes as follows: {ang, 2 + ( ( ang + 61) % 64 ), 2 + ((ang - 1 ) % 64 ), 2 + ( ( ang + 60 ) % 64 ), 2 + ((ang) % 64 )} when at least a first condition is fulfilled, wherein the first condition includes that the intra prediction mode of the left neighbor block and the intra prediction mode of the above neighbor block are the same angular mode, and wherein ang represents the intra prediction mode of the left neighbor block or the intra prediction mode of the above neighbor block.