中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

56 records (took 0.027 seconds)

    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.

Patent Agency Ranking