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    ADAPTIVE FILTER STRENGTH SIGNALLING FOR GEOMETRIC PARTITION MODE
    82.
    发明申请
    ADAPTIVE FILTER STRENGTH SIGNALLING FOR GEOMETRIC PARTITION MODE 有权

    公开(公告)号：US20220116586A1

    公开(公告)日：2022-04-14

    申请号：US17557930

    申请日：2021-12-21

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Semih ESENLIK ,  Max BLAESER ,  Zhijie ZHAO ,  Han GAO ,  Biao WANG ,  Anand Meher KOTRA ,  Elena Alexandrovna ALSHINA

    IPC: H04N19/103 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/70 ,  H04N19/132

    Abstract: A method for coding implemented by a decoding device or an encoding device includes: obtaining a first prediction mode for a first sub-block, obtaining a second prediction mode for a second sub-block; obtaining a first prediction value for a sample in the current block according to the first prediction mode, obtaining a second prediction value for the sample in the current block according to the second prediction mode; obtaining a value of an indicator, the value of the indicator indicating a blending operation which is performed for the sample in the current block; and obtaining a combined prediction value for the sample in the current block, according to the value of the indictor, the first prediction value, and the second prediction value. The blending operation adaptively performs around a separation line dividing the current block into at least the first sub-block and the second sub-block.

    Coding Method, Device, System With Merge Mode
    85.
    发明申请
    Coding Method, Device, System With Merge Mode 有权

    公开(公告)号：US20210266538A1

    公开(公告)日：2021-08-26

    申请号：US17245037

    申请日：2021-04-30

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/119 ,  H04N19/96 ,  H04N19/159 ,  H04N19/132 ,  H04N19/176

    Abstract: Methods, systems, and computer programs encoded on a computer storage medium for marking the availability of a potential candidate coding block for intra prediction mode estimation of a current coding block are provided. One example method includes obtaining a parent block of a current coding block (parentCurr), and a parent block of a candidate coding block (parentCand). The current coding block and the candidate coding block are each obtained by splitting of the parentCurr and the parentCand, respectively. In one aspect, the current coding block cannot use an intra prediction mode of a potential candidate coding block when parentCand and parentCurr are the same block, a function of a number of quadtree, ternary tree, and binary tree splitting operations is greater than a threshold minus 1, and a split mode of the parent block of the current coding block parentCurr is a ternary tree split.

    DEVICES AND METHODS FOR IMAGE AND VIDEO CODING
    86.
    发明申请
    DEVICES AND METHODS FOR IMAGE AND VIDEO CODING 有权

    公开(公告)号：US20210176493A1

    公开(公告)日：2021-06-10

    申请号：US17170065

    申请日：2021-02-08

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176 ,  H04N19/159

    Abstract: The disclosure relates to a method of decoding implemented by a decoding device, comprising: obtaining a value of a reference line index for a current block; constructing a most probable mode, MPM, list for the current block; obtaining a value of intra-prediction mode index for the current block; when the value of the reference line index is not equal to 0, obtaining an intra prediction mode of the current block according to the MPM list for the current block and the value of the intra-prediction mode index for the current block, wherein the value of the intra-prediction mode index indicates a position that corresponds to the intra prediction mode of the current block among angular intra-prediction modes in the MPM list. The disclosure also relates to a coding apparatus and a non-transitory machine-readable medium.

    METHOD AND APPARATUS FOR INTRA PREDICTION
    87.
    发明申请
    METHOD AND APPARATUS FOR INTRA PREDICTION 有权

    公开(公告)号：US20210144369A1

    公开(公告)日：2021-05-13

    申请号：US17156246

    申请日：2021-01-22

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/11 ,  H04N19/176 ,  H04N19/593

    Abstract: The present disclosure relates to a method and device of decoding video data. The device and method use a mapping process to simplify the calculation procedure for intra prediction, to improve coding efficiency. The decoding of encoded data comprises: obtaining an indication indicating whether the intra-prediction mode for a picture block is in a set of most probable modes, MPM, or not; if the indication indicates that the intra prediction mode for the picture block is not in the set of MPMs, generating a mapping relationship between at least one intra prediction mode in the first set of intra prediction modes and at least one intra prediction mode in the set of non-MPMs; decoding the encoded data to obtain an intra prediction mode codeword for the picture block; and obtaining the intra prediction mode for the picture block according to the mapping relationship and the intra prediction mode codeword.

    ENCODER, DECODER AND CORRESPONDING METHODS FOR INTRA PREDICTION
    88.
    发明申请
    ENCODER, DECODER AND CORRESPONDING METHODS FOR INTRA PREDICTION 有权

    公开(公告)号：US20210014505A1

    公开(公告)日：2021-01-14

    申请号：US17011504

    申请日：2020-09-03

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/159 ,  H04N19/105 ,  H04N19/13 ,  H04N19/46 ,  H04N19/186 ,  H04N19/176

    Abstract: Devices and methods for Intra prediction are provided. The method includes: obtaining a value of a first indication information of a current block and a value of a reference index line of the current block. When the value of the first indication information indicates the intra prediction mode of the current block is comprised in the set of most probable modes, and when the value of the reference index line indicates the closest neighboring reference line to the current block is used, the method further includes obtaining a value of a second indication information of the current block, the value of the second indication information of the current block indicating whether the intra prediction mode of the current block is Planar mode or not. The method can improve the efficiency to determine the intra prediction mode of the current block.

    ENCODER, A DECODER AND CORRESPONDING METHODS USING IBC MERGE LIST
    89.
    发明申请
    ENCODER, A DECODER AND CORRESPONDING METHODS USING IBC MERGE LIST 审中-公开

    公开(公告)号：US20200374541A1

    公开(公告)日：2020-11-26

    申请号：US16993597

    申请日：2020-08-14

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: 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.

    MEMORY ACCESS WINDOW AND PADDING FOR MOTION VECTOR REFINEMENT
    90.
    发明申请
    MEMORY ACCESS WINDOW AND PADDING FOR MOTION VECTOR REFINEMENT 审中-公开

    公开(公告)号：US20200236389A1

    公开(公告)日：2020-07-23

    申请号：US16844901

    申请日：2020-04-09

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/513 ,  H04N19/573 ,  H04N19/57

    Abstract: The present disclosure relates to motion vector determination using template matching. In particular, an initial motion vector and a template are obtained for a prediction block. Then a refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector. The template matching accesses integer sample positions within a predetermined window, the predetermined window including said search space and further integer sample positions accessible for the template matching, replaces at least one integer sample position located out of the window by at least one replacement value, each replacement value is based on at least one sample within said window, and uses the accessed integer sample position values as well as the at least one replacement value to perform the template matching.

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