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    LIMITED MEMORY ACCESS WINDOW FOR MOTION VECTOR REFINEMENT
    51.
    发明公开
    LIMITED MEMORY ACCESS WINDOW FOR MOTION VECTOR REFINEMENT 审中-公开

    公开(公告)号：US20230239489A1

    公开(公告)日：2023-07-27

    申请号：US18158313

    申请日：2023-01-23

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/513 ,  H04N19/57

    CPC classification number: H04N19/513 ,  H04N19/57

    Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the 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 and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.

    Encoder, a decoder, and corresponding methods for transform process in video coding
    54.
    发明授权
    Encoder, a decoder, and corresponding methods for transform process in video coding 有权

    公开(公告)号：US11589046B2

    公开(公告)日：2023-02-21

    申请号：US17141121

    申请日：2021-01-04

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/625 ,  H04N19/70

    Abstract: The present disclosure provides methods and devices. A video method of coding implemented by a decoding device, comprising: when a prediction mode of a current coding block is intra prediction, and the current coding block is processed by using Intra sub-partition coding mode, determining whether a width of a current transform block is larger than or equal to a first threshold or not, and whether the width of the current transform block is smaller than or equal to a second threshold or not, the current transform block corresponding to the current coding block; when the width of the current transform block is larger than or equal to the first threshold and the width of the current transform block is smaller than or equal to the second threshold, performing transform process on the current transform block, wherein a transform core based on DST 7 is used on horizontal direction transform.

    Devices and methods for image and video coding
    55.
    发明授权
    Devices and methods for image and video coding 有权

    公开(公告)号：US11563976B2

    公开(公告)日：2023-01-24

    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 ,  H04N19/159 ,  H04N19/176

    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.

    ENCODER, A DECODER AND CORRESPONDING METHODS FOR INTER-PREDICTION
    58.
    发明申请
    ENCODER, A DECODER AND CORRESPONDING METHODS FOR INTER-PREDICTION 有权

    公开(公告)号：US20220303573A1

    公开(公告)日：2022-09-22

    申请号：US17713223

    申请日：2022-04-04

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/56 ,  H04N19/57 ,  H04N19/61

    Abstract: A non-transitory computer-readable medium for inter-prediction and an encoder are provided. An initial motion vector is obtained for a current block. Search space positions are determined according to the initial motion vector. Matching costs for the search space positions are checked according to a checking order to select a target search space position with a minimal matching cost. A refining motion vector of the current block is determined based on the initial motion vector and the target search space position. A central search space position is determined according to the checking order, and the central search space position is pointed to by the initial motion vector.

    Boundary block partitioning in video coding
    59.
    发明授权
    Boundary block partitioning in video coding 有权

    公开(公告)号：US11425375B2

    公开(公告)日：2022-08-23

    申请号：US17144976

    申请日：2021-01-08

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/119 ,  H04N19/176 ,  H04N19/192 ,  H04N19/96

    Abstract: A partitioning method comprises determining whether a current block of a picture is a boundary block and whether the size of the current block is larger than a minimum allowed quadtree leaf node size; and if the current block is the boundary block and the size of the current block is not larger than the minimum allowed quadtree leaf node size (MinQTSize), applying forced binary tree (BT) partitioning to the current block. A method comprises making a determination that a current block of a picture is a boundary block and that a size of the current block is less than or equal to a minimum allowed quadtree (QT) leaf node size (MinQTSize); and applying, in response to the determination, forced binary tree (BT) partitioning to the current block.

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