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    Image Filtering Method and Apparatus
    5.
    发明申请
    Image Filtering Method and Apparatus 审中-公开

    公开(公告)号：US20200021822A1

    公开(公告)日：2020-01-16

    申请号：US16577507

    申请日：2019-09-20

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jicheng An ,  Jianhua Zheng

    IPC: H04N19/186 ,  G06T5/00 ,  G06T5/20 ,  H04N19/64 ,  H04N19/176

    Abstract: An image filtering method and apparatus, where the method includes determining a filter coefficient of a chroma filter based on a filter coefficient of a luma filter, where the luma filter and the chroma filter are respectively applied to perform filtering processing on luma samples and chroma samples of a to-be-processed image, all filter coefficients of the luma filter present a first geometric distribution, all filter coefficients of the chroma filter present a second geometric distribution, the first geometric distribution and the second geometric distribution are similar shapes, and a filter coefficient of the chroma filter at an edge of the second geometric distribution is calculated using one or more filter coefficients of the luma filter at an edge of the first geometric distribution, and respectively performing filtering processing on the luma samples and the chroma samples using the luma filter and the chroma filter.

    Intra-frame prediction method and apparatus
    7.
    发明授权
    Intra-frame prediction method and apparatus 有权

    公开(公告)号：US10819999B2

    公开(公告)日：2020-10-27

    申请号：US16697854

    申请日：2019-11-27

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yu Han ,  Jicheng An ,  Jianhua Zheng

    IPC: H04N19/44 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/159

    Abstract: A method for decoding an intra-frame prediction mode includes determining a first mode set comprising intra-frame prediction modes of available neighborhood reconstruction units in preset positions of the current to-be-decoded unit and at least one non-directional prediction mode, and parsing the bitstream to obtain a second identifier used to indicate a candidate intra-frame prediction mode in the first mode set that is used as the intra-frame prediction mode of the current to-be-decoded unit, and a codeword length of the second identifier indicating one of the at least one non-directional prediction mode as the intra-frame prediction mode of the current to-be-decoded unit is not less than a codeword length of any second identifier indicating an intra-frame prediction mode of an available neighborhood reconstruction unit in a preset position of the current to-be-decoded unit as the intra-frame prediction mode of the current to-be-decoded unit.

    Video Picture Inter Prediction Method and Apparatus, and Codec
    8.
    发明申请
    Video Picture Inter Prediction Method and Apparatus, and Codec 审中-公开

    公开(公告)号：US20200228830A1

    公开(公告)日：2020-07-16

    申请号：US16832707

    申请日：2020-03-27

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Na Zhang ,  Jianhua Zheng ,  Jicheng An

    IPC: H04N19/587 ,  H04N19/159 ,  H04N19/137

    Abstract: A video picture inter prediction method includes determining an inter prediction mode used to perform inter prediction on a current picture block, where the inter prediction mode is one mode in a candidate inter prediction mode set, and the candidate inter prediction mode set includes a plurality of inter prediction modes used for a non-directional motion field or a plurality of inter prediction modes used for a directional motion field, and performing inter prediction on the current picture block based on the determined inter prediction mode.

    Method and Apparatus for Image Coding and Decoding Through Inter-Prediction
    9.
    发明申请
    Method and Apparatus for Image Coding and Decoding Through Inter-Prediction 审中-公开

    公开(公告)号：US20190230362A1

    公开(公告)日：2019-07-25

    申请号：US16371499

    申请日：2019-04-01

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xu Chen ,  Jicheng An ,  Jianhua Zheng

    IPC: H04N19/139 ,  H04N19/577 ,  H04N19/176 ,  H04N19/105 ,  H04N19/523

    Abstract: A decoding method includes determining prediction motion information of a first decoding block, performing bidirectional prediction on the first decoding block based on the prediction motion information to obtain a first decoding prediction block, performing motion search of first precision on a prediction reference image block to obtain at least one second decoding prediction block, where a search location of the motion search is determined using a motion vector predictor and the first precision, calculating a difference between the first decoding prediction block and each second decoding prediction block to obtain a target motion vector predictor of the first decoding block, and updating the target motion vector predictor through motion search.

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