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    ADAPTIVE FILTER STRENGTH SIGNALLING FOR GEOMETRIC PARTITION MODE
    44.
    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.

    DEVICES AND METHODS FOR IMAGE AND VIDEO CODING
    47.
    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
    48.
    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.

    MEMORY ACCESS WINDOW AND PADDING FOR MOTION VECTOR REFINEMENT
    49.
    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.

    MEMORY ACCESS WINDOW FOR SUB PREDICTION BLOCK MOTION VECTOR DERIVATION
    50.
    发明申请
    MEMORY ACCESS WINDOW FOR SUB PREDICTION BLOCK MOTION VECTOR DERIVATION 审中-公开

    公开(公告)号：US20200236388A1

    公开(公告)日：2020-07-23

    申请号：US16844677

    申请日：2020-04-09

    Applicant: Huawei Technologies Co., Ltd.

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

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

    Abstract: The present disclosure relates to means to enable reduction of memory access in motion vector determination and/or refinement for a prediction block. In particular, the present disclosure relates to means to enable reduction of memory access in motion vector determination and/or refinement performed on a sub prediction block basis. In other words, a prediction block is split into sub prediction blocks for which at least the motion vector refinement is preformed individually. The memory access window which limits the samples accessible during the motion vector determination and refinement of the sub prediction blocks does not exceed the memory access window for performing the motion vector determination and/or refinement for the prediction block.

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