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    Image prediction method and device
    3.
    发明授权
    Image prediction method and device 有权

    公开(公告)号：US12192449B2

    公开(公告)日：2025-01-07

    申请号：US18624948

    申请日：2024-04-02

    Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  University of Science and Technology of China

    Inventor： Zhuoyi Lv ,  Li Li ,  Houqiang Li ,  Haitao Yang

    IPC: H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/52 ,  H04N19/527 ,  H04N19/54

    Abstract: An image prediction method and device are disclosed. The method includes: obtaining a first reference unit of an image unit, where respective predicted images are obtained for the image unit and the first reference unit by using a same affine model; obtaining motion information of basic motion compensation units at two or more preset positions of the first reference unit; and obtaining motion information of a basic motion compensation unit of the image unit according to the motion information. In this way, motion information of the first reference unit using a same affine motion prediction model is reused, and a more accurate motion vector of a current image unit is obtained, improving prediction accuracy and maintaining encoding and decoding complexity, thereby improving encoding and decoding performance.

    Motion compensating prediction method and device
    5.
    发明授权
    Motion compensating prediction method and device 有权

    公开(公告)号：US11128874B2

    公开(公告)日：2021-09-21

    申请号：US16289250

    申请日：2019-02-28

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

    Inventor： Xiang Ma ,  Haitao Yang ,  Li Li ,  Houqiang Li

    IPC: H04N19/167 ,  H04N19/105 ,  H04N19/176 ,  H04N19/513 ,  H04N19/59 ,  H04N19/182 ,  H04N19/51

    Abstract: Embodiments of the present invention provide a motion compensating prediction method and a motion compensating prediction apparatus. The motion compensating prediction method includes: determining a location of an initial reference pixel of a current pixel in a reference image, where the current pixel is located in a first sub-image of a current image; when the initial reference pixel is located outside a second sub-image that is in the reference image and that is at a location corresponding to the first sub-image, determining a location of a target reference pixel of the current pixel in the reference image based on the location of the initial reference pixel; and determining a predicted value of a pixel value of the current pixel based on a pixel value of the target reference pixel and/or a pixel value of a pixel near the target reference pixel.

    Video encoding and decoding method and apparatus
    6.
    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.

    Picture prediction method and related apparatus
    8.
    发明授权
    Picture prediction method and related apparatus 有权

    公开(公告)号：US10827194B2

    公开(公告)日：2020-11-03

    申请号：US15461274

    申请日：2017-03-16

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

    Inventor： Li Li ,  Houqiang Li ,  Zhuoyi Lv ,  Sixin Lin

    IPC: H04N19/513 ,  H04N19/176 ,  H04N19/54 ,  H04N19/182 ,  H04N19/51 ,  H04N19/593

    Abstract: A picture prediction method and a related apparatus are disclosed. The picture prediction method includes: determining motion vector predictors of K pixel samples in a current picture block, where K is an integer greater than 1, the K pixel samples include a first vertex angle pixel sample in the current picture block, a motion vector predictor of the first vertex angle pixel sample is obtained based on a motion vector of a preset first spatially adjacent picture block of the current picture block, and the first spatially adjacent picture block is spatially adjacent to the first vertex angle pixel sample; and performing, based on a non-translational motion model and the motion vector predictors of the K pixel samples, pixel value prediction on the current picture block. Solutions in the embodiments of the present application are helpful in reducing calculation complexity of picture prediction based on a non-translational motion model.

    Encoding or decoding method and apparatus
    10.
    发明授权
    Encoding or decoding method and apparatus 有权
    编码或解码方法和装置

    公开(公告)号：US09124900B2

    公开(公告)日：2015-09-01

    申请号：US14317040

    申请日：2014-06-27

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Haitao Yang ,  Bin Li ,  Houqiang Li ,  Jiantong Zhou

    IPC: H04N7/12 ,  H04N19/593 ,  H04N19/176 ,  H04N19/46 ,  H04N19/11 ,  H04N19/186 ,  H04N19/44

    CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

    Abstract: Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information.

    Abstract translation: 本发明的实施例提供一种编码或解码方法和装置。 该方法包括：提取比特流中的第一信息; 根据第一信息确定色度分量帧内预测模式; 当色度分量帧内预测模式不能根据第一信息确定时，提取比特流中的第二信息; 以及根据所述第二信息确定色度分量帧内预测模式，其中所述第一信息包括用于指示所述色度分量帧内预测模式是DM模式还是LM模式的信息，所述第二信息用于将剩余模式指示为 色度分量帧内预测模式，并且剩余模式是可以根据第一信息确定的模式之外的可用色度分量帧内预测模式之一。

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