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    Memory access window for sub prediction block motion vector derivation
    41.
    发明授权
    Memory access window for sub prediction block motion vector derivation 有权

    公开(公告)号：US11245916B2

    公开(公告)日：2022-02-08

    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 ,  H04N19/533 ,  H04N19/573

    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 performed 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.

    Method and Apparatus for Intra Prediction in Video Coding
    45.
    发明申请
    Method and Apparatus for Intra Prediction in Video Coding 有权

    公开(公告)号：US20210203927A1

    公开(公告)日：2021-07-01

    申请号：US17199929

    申请日：2021-03-12

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Biao Wang ,  Semih ESENLIK ,  Anand Meher Kotra ,  Han Gao ,  Jianle Chen ,  Zhijie Zhao

    IPC: H04N19/11 ,  H04N19/176 ,  H04N19/436 ,  H04N19/593 ,  H04N19/70

    Abstract: A decoding method and a decoder for decoding a current block of a video frame is provided, wherein the decoding method comprises determining a list of Most Probable Modes (MPMs) for the current block. When at least one condition is satisfied, the list of MPMs includes a DC mode, a Vertical mode, a Horizontal mode, an intra prediction mode corresponding to a value of the Vertical mode with a first offset, and an intra prediction mode corresponding to the value of the Vertical mode with a second offset. The decoding method further includes obtaining a MPM flag and a MPM index for the current block from a bitstream of the video, and obtaining an intra prediction mode for the current block for reconstructing the current block.

    IN-LOOP DEBLOCKING FILTER APPARATUS AND METHOD FOR VIDEO CODING
    46.
    发明申请
    IN-LOOP DEBLOCKING FILTER APPARATUS AND METHOD FOR VIDEO CODING 有权

    公开(公告)号：US20210127139A1

    公开(公告)日：2021-04-29

    申请号：US17134442

    申请日：2020-12-27

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/82 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/86 ,  H04N19/124

    Abstract: An in-loop deblocking filter apparatus (120) for processing a current row or column of samples into a filtered row or column of samples. The current row or column of samples comprises a plurality of samples from a first sample block and a horizontally or vertically neighboring second sample block of a reconstructed picture of a video stream. The samples of the current row or column of samples have sample values pN−1−p0, q0−qN−1 wherein N is an even integer greater than 2. If a first condition or a second condition is satisfied, the current row or column is processed by: determining a filtered sample value q0′ by applying a (2N−1)-tap filter to the sample values pN−2, . . . , p0, q0, . . . , qN−1 of the current row or column; and/or determining a filtered sample value p0′ by applying a (2N−1)-tap filter to the sample values pN−1, . . . , p0, q0, . . . , qN−2 of the current row or column.

    Video encoder and decoder for predictive partitioning
    48.
    发明授权
    Video encoder and decoder for predictive partitioning 有权

    公开(公告)号：US10771808B2

    公开(公告)日：2020-09-08

    申请号：US16533412

    申请日：2019-08-06

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Zhijie Zhao ,  Max Blaeser ,  Mathias Wien

    IPC: H04N19/52 ,  H04N19/176 ,  H04N19/567

    Abstract: The present disclosure provides a video encoder and a video decoder, which may both be used for partitioning a block in a current picture based on at least one partitioning predictor. The encoder and decoder are configured to select at least one reference picture and a plurality of blocks in the at least one reference picture. Further, to calculate, for each selected block, a projected location in the current picture based on a motion vector associated to the selected block in the reference picture. Then, they are configured to determine each selected block, of which the projected location spatially overlaps with the block in the current picture, to be a reference block, and generate for at least one reference block a partitioning predictor based on partitioning information associated to, for example stored in, the at least one reference picture.

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