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    CODING METHOD, DEVICE, SYSTEM WITH MERGE MODE
    31.
    发明申请
    CODING METHOD, DEVICE, SYSTEM WITH MERGE MODE 有权

    公开(公告)号：US20210195229A1

    公开(公告)日：2021-06-24

    申请号：US17172088

    申请日：2021-02-10

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Semih Esenlik ,  Han Gao ,  Jianle Chen ,  Anand Meher Kotra ,  Biao Wang

    IPC: H04N19/52 ,  H04N19/56 ,  H04N19/96 ,  H04N19/176

    Abstract: An apparatus and method for marking availability of a candidate coding block for merge estimation of a current coding block within a coding tree unit, CTU, which includes multiple coding blocks. Initially, the candidate coding block is marked as available. The candidate coding block is marked as unavailable when a predefined location of the candidate coding block is included within an extended merge estimation region, MER. The extended MER includes a current MER in which the current coding block is located and at least a portion of another MER, adjacent to the current MER.

    PICTURE ENCODING AND DECODING, PICTURE ENCODER, AND PICTURE DECODER
    32.
    发明申请
    PICTURE ENCODING AND DECODING, PICTURE ENCODER, AND PICTURE DECODER 有权

    公开(公告)号：US20210014484A1

    公开(公告)日：2021-01-14

    申请号：US17037550

    申请日：2020-09-29

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Anand Meher Kotra ,  Zhijie Zhao ,  Semih Esenlik ,  Han Gao

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/189 ,  H04N19/176

    Abstract: The disclosure relates to a decoder for reconstructing a current block of an encoded picture, the decoder comprising processing circuitry configured to generate a most probable modes (MPM) candidates list for the current block, the MPM candidates list comprising four or more elements, wherein the first four elements of the MPM candidates list are, in this order, an intra-prediction mode associated with a left neighboring block of the current block, an intra-prediction mode associated with a top neighboring block of the current block, a planar mode, and an intra-prediction mode associated with a top-left neighboring block of the current block, prune the MPM candidates list, thereby generating an MPM list, and intra-predict the current block based on the MPM list. A higher compression ratio can thus be achieved.

    Encoder, decoder and corresponding methods
    35.
    发明授权
    Encoder, decoder and corresponding methods 有权

    公开(公告)号：US12250410B2

    公开(公告)日：2025-03-11

    申请号：US17951499

    申请日：2022-09-23

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Biao Wang ,  Semih Esenlik ,  Elena Alexandrovna Alshina ,  Anand Meher Kotra ,  Han Gao

    IPC: H04N19/70 ,  H04N19/172 ,  H04N19/187

    Abstract: A method of decoding of a video or picture bitstream implemented by a decoding device, the bitstream including a current sequence parameter set (SPS) comprising syntax elements that apply to a video sequence, the method comprising: obtaining a first syntax element used to determine a maximum number of temporal sublayers that is allowed to be present in each coded layer video sequence) referring to the current SPS, wherein a value of the first syntax element is in a range of 0 to a first value, wherein the first value is a value of a second syntax element used to determine the maximum number of temporal sublayers that is allowed to present in a layer in each coded video sequence referring to a video parameter set, when the second syntax element is referred to by the SPS; decoding the bitstream based on the value of the first syntax element.

    IMAGE PROCESSING DEVICE AND METHOD FOR PERFORMING EFFICIENT DEBLOCKING
    38.
    发明公开
    IMAGE PROCESSING DEVICE AND METHOD FOR PERFORMING EFFICIENT DEBLOCKING 审中-公开

    公开(公告)号：US20240244214A1

    公开(公告)日：2024-07-18

    申请号：US18423311

    申请日：2024-01-26

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Anand Meher Kotra ,  Semih Esenlik ,  Zhijie Zhao ,  Han Gao

    IPC: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

    CPC classification number: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

    Abstract: A deblocking filter of an image processing device is provided. The deblocking filter is used in an image coding process, for deblocking a block edge between a first coding block and a second coding block of an image. The first block has SA samples perpendicular to the block edge by N samples parallel to the block edge, and the second block has SB samples perpendicular to the block edge by N samples parallel to the block edge. No more than IA samples of the first coding block are used as first filter input values, and no more than IB samples of the second coding block are used as second filter input values. No more than MA samples of the first coding block are modified as first filter output values, and no more than MB samples of the second coding block are modified as second filter output values.

    Encoder, decoder and corresponding methods using interpolation filtering
    40.
    发明授权
    Encoder, decoder and corresponding methods using interpolation filtering 有权

    公开(公告)号：US12041230B2

    公开(公告)日：2024-07-16

    申请号：US17712980

    申请日：2022-04-04

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Elena Alexandrovna Alshina ,  Semih Esenlik ,  Anand Meher Kotra ,  Biao Wang ,  Han Gao

    IPC: H04N19/117 ,  H04N19/132 ,  H04N19/184 ,  H04N19/30 ,  H04N19/80

    CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/184 ,  H04N19/30 ,  H04N19/80

    Abstract: A method operates a two-dimensional (2D) separable interpolation filter for coding a video. The 2D separable interpolation filter includes a first second one-dimensional (1D) interpolation filter and a temporal buffer. The method includes: obtaining filter coefficients for the first 1D interpolation filter; comparing a sum of positive filter coefficients of the obtained filter coefficients with a threshold; and upon determining that the sum of positive filter coefficients is larger than the threshold, amending one or more of the filter coefficients to obtain amended filter coefficients, the filter coefficients being amended such that a sum of positive filter coefficients is not larger than the threshold; applying the amended filter coefficients to samples of the video to obtain a value of a fractional sample position of the video; re-scaling the value of the fractional sample position; and storing the re-scaled value of the fractional sample position in the temporal buffer.

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