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    Image encoding method and apparatus, and image decoding method and apparatus
    41.
    发明授权
    Image encoding method and apparatus, and image decoding method and apparatus 有权

    公开(公告)号：US12177472B2

    公开(公告)日：2024-12-24

    申请号：US17858447

    申请日：2022-07-06

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Huanbang Chen ,  Sixin Lin ,  Haitao Yang

    IPC: H04N19/52 ,  H04N19/105 ,  H04N19/124 ,  H04N19/139 ,  H04N19/157 ,  H04N19/176 ,  H04N19/513

    Abstract: Image encoding and decoding methods, apparatuses and computer-readable media are described. An example image encoding method includes: determining N encoded units from adjacent encoded units of a to-be-encoded unit according to a first preset rule, where a motion prediction mode of the N encoded units is the same as that of the to-be-encoded unit; generating an nth motion vector group by using a first preset algorithm and based on a motion vector of an nth encoded unit; determining, from obtained N motion vector groups according to a second preset rule, one motion vector group as an optimal motion vector group; determining a prediction sample value of each sample unit in the to-be-encoded unit by using a second preset algorithm and based on the optimal motion vector group; and encoding a prediction residual of each sample unit and an index identifier of the optimal motion vector group, to obtain a bitstream corresponding to the to-be-encoded unit.

    ENCODING/DECODING METHOD, ENCODING APPARATUS, DECODING APPARATUS, AND SYSTEM FOR VIDEO IMAGE
    42.
    发明公开
    ENCODING/DECODING METHOD, ENCODING APPARATUS, DECODING APPARATUS, AND SYSTEM FOR VIDEO IMAGE 审中-公开

    公开(公告)号：US20240031593A1

    公开(公告)日：2024-01-25

    申请号：US18451855

    申请日：2023-08-18

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Sixin Lin ,  Mingyuan Yang

    IPC: H04N19/513 ,  H04N19/517 ,  H04N19/51

    CPC classification number: H04N19/513 ,  H04N19/517 ,  H04N19/51 ,  H04N19/56

    Abstract: Embodiments of the present invention provide an encoding method, a decoding method, an encoding apparatus, a decoding apparatus, for a video image. The encoding method includes: determining an optimal integrated neighboring block for a current block based on a motion vector integration technology; determining, based a prediction direction of the optimal integrated neighboring block, a motion vector derivation mode that needs to be used by a decoder; correcting a motion vector of the current block based on the motion vector derivation mode; and determining a residual between a predicted value and an original value of the current block based on the corrected motion vector, thereby encoding the current block. According to the technical solutions, a more accurate predicted value is obtained by correcting the motion vector, and a smaller residual is generated.

    ENCODING/DECODING METHOD, ENCODING APPARATUS, DECODING APPARATUS, AND SYSTEM FOR VIDEO IMAGE
    45.
    发明申请
    ENCODING/DECODING METHOD, ENCODING APPARATUS, DECODING APPARATUS, AND SYSTEM FOR VIDEO IMAGE 有权

    公开(公告)号：US20220086477A1

    公开(公告)日：2022-03-17

    申请号：US17535693

    申请日：2021-11-26

    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

    Inventor： Sixin Lin ,  Mingyuan Yang

    IPC: H04N19/513 ,  H04N19/517 ,  H04N19/51

    Abstract: Embodiments of the present invention provide an encoding method, a decoding method, an encoding apparatus, a decoding apparatus, for a video image. The encoding method includes: determining an optimal integrated neighboring block for a current block based on a motion vector integration technology; determining, based a prediction direction of the optimal integrated neighboring block, a motion vector derivation mode that needs to be used by a decoder; correcting a motion vector of the current block based on the motion vector derivation mode; and determining a residual between a predicted value and an original value of the current block based on the corrected motion vector, thereby encoding the current block. According to the technical solutions, a more accurate predicted value is obtained by correcting the motion vector, and a smaller residual is generated.

    Picture prediction method and picture prediction apparatus
    47.
    发明授权
    Picture prediction method and picture prediction apparatus 有权

    公开(公告)号：US11240529B2

    公开(公告)日：2022-02-01

    申请号：US17012658

    申请日：2020-09-04

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

    IPC: H04N19/52 ,  H04N19/537 ,  H04N19/513 ,  H04N19/523 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56

    Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.

    Video encoding and decoding method and apparatus
    48.
    发明授权
    Video encoding and decoding method and apparatus 有权

    公开(公告)号：US10560719B2

    公开(公告)日：2020-02-11

    申请号：US15882346

    申请日：2018-01-29

    Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

    Inventor： Fangdong Chen ,  Sixin Lin ,  Houqiang Li ,  Li Li

    IPC: H04N19/58 ,  H04N19/124 ,  H04N19/172

    Abstract: A video encoding and decoding method and apparatus are provided. The video encoding method includes: obtaining a first statistical characteristic of previous K frames of images of a video sequence; determining a first background frame; determining, according to the first statistical characteristic, a QP used for encoding the first background frame; encoding the first background frame according to the QP, to obtain a first background long-term reference frame; and encoding the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence according to the first background long-term reference frame. When encoding is performed on the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence, the used QP for encoding the background long-term reference frame is determined according to the first statistical characteristic related to video content of the previous K frames of images.

    IMAGE ENCODING METHOD AND APPARATUS, AND IMAGE DECODING METHOD AND APPARATUS
    49.
    发明申请
    IMAGE ENCODING METHOD AND APPARATUS, AND IMAGE DECODING METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20180376161A1

    公开(公告)日：2018-12-27

    申请号：US16054306

    申请日：2018-08-03

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Huanbang Chen ,  Sixin Lin ,  Haitao Yang

    IPC: H04N19/52 ,  H04N19/157 ,  H04N19/139 ,  H04N19/124

    Abstract: An image encoding method includes: determining N encoded units from adjacent encoded units of a to-be-encoded unit according to a first preset rule, where a motion prediction mode of the N encoded units is the same as that of the to-be-encoded unit; generating an nth motion vector group by using a first preset algorithm and based on a motion vector of an nth encoded unit; determining, from obtained N motion vector groups according to a second preset rule, one motion vector group as an optimal motion vector group; determining a prediction sample value of each sample unit in the to-be-encoded unit by using a second preset algorithm and based on the optimal motion vector group; and encoding a prediction residual of each sample unit and an index identifier of the optimal motion vector group, to obtain a bitstream corresponding to the to-be-encoded unit.

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