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    Image prediction method and apparatus
    2.
    发明授权
    Image prediction method and apparatus 有权

    公开(公告)号：US12058365B2

    公开(公告)日：2024-08-06

    申请号：US17540928

    申请日：2021-12-02

    申请人： Huawei Technologies Co., Ltd.

    发明人： Huanbang Chen ,  Sixin Lin ,  Hong Zhang

    IPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/107 ,  H04N19/44 ,  H04N19/54 ,  H04N19/70

    CPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/107 ,  H04N19/44 ,  H04N19/70 ,  H04N19/54

    摘要： An image prediction method and apparatus is disclosed. The image prediction method includes: determining, according to information about adjacent image units adjacent to a to-be-processed image unit, whether a set of candidate prediction modes for the to-be-processed image unit includes an affine merge mode, where the affine merge mode indicates that respective predicted images of the to-be-processed image unit and the adjacent image units of the to-be-processed image unit are obtained by using a same affine model; parsing a bitstream to obtain first indication information; determining, in the set of candidate prediction modes, a prediction mode for the to-be-processed image unit according to the first indication information; and determining a predicted image of the to-be-processed image unit according to the prediction mode. The method reduces a bit rate of encoding a prediction mode, thereby improving encoding efficiency.

    PICTURE PREDICTION METHOD AND PICTURE PREDICTION APPARATUS
    3.
    发明申请
    PICTURE PREDICTION METHOD AND PICTURE PREDICTION APPARATUS 有权

    公开(公告)号：US20210058641A1

    公开(公告)日：2021-02-25

    申请号：US17012658

    申请日：2020-09-04

    申请人： HUAWEI TECHNOLOGIES CO., LTD.

    发明人： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

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

    摘要： 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.

    Image processing method and apparatus
    5.
    发明授权
    Image processing method and apparatus 有权

    公开(公告)号：US10116934B2

    公开(公告)日：2018-10-30

    申请号：US15178004

    申请日：2016-06-09

    申请人： Huawei Technologies Co., Ltd.

    发明人： Jinwen Zan ,  Sixin Lin ,  Siwei Ma

    IPC分类号： H04N19/105 ,  H04N19/56 ,  H04N19/513 ,  H04N19/433 ,  H04N19/176

    摘要： An image processing method includes acquiring N pieces of motion information from N adjacent image blocks adjacent to a current image block, where the N adjacent image blocks are in a one-to-one correspondence with the N pieces of motion information, and the N pieces of motion information are in a one-to-one correspondence with the N reference image blocks, determining candidate motion information from the N pieces of motion information according to a preset rule, determining, in the reference image, a location range of a to-be-stored pixel, and storing all pixels in the location range, where the location range covers all pixels of a candidate reference image block, and reading the pixels in the location range, and performing encoding processing on the current image block according to the pixels in the location range.

    Method and apparatus for rounding coordinate value of non-integer pixel position motion vector
    6.
    发明授权
    Method and apparatus for rounding coordinate value of non-integer pixel position motion vector 有权
    用于舍入非整数像素位置运动矢量坐标值的方法和装置

    公开(公告)号：US09521408B2

    公开(公告)日：2016-12-13

    申请号：US13946705

    申请日：2013-07-19

    申请人： Huawei Technologies Co., Ltd.

    发明人： Mingyuan Yang ,  Sixin Lin ,  Jiantong Zhou ,  Haoping Yu

    IPC分类号： H04N7/34 ,  H04N7/36 ,  H04N19/51 ,  H04N19/513 ,  H04N19/533 ,  H04N19/523 ,  H04N19/59

    CPC分类号： H04N19/51 ,  H04N19/513 ,  H04N19/523 ,  H04N19/533 ,  H04N19/59

    摘要： The present disclosure provides a method and an apparatus for rounding a coordinate value of a non-integer pixel position motion vector. The method includes: rounding a coordinate value of a non-integer pixel position motion vector, which includes: for each dimension of coordinates of the non-integer pixel position motion vector, when a coordinate in the dimension is a non-integer pixel position, rounding the coordinate value of the non-integer pixel position motion vector in the dimension to one of integer pixel coordinate positions A and B if distances from the coordinate of the non-integer pixel position motion vector in the dimension to the integer pixel coordinate positions A and B adjacent to the non-integer pixel position in the dimension are the same, where an integer pixel coordinate position is determined by a sign of the coordinate value of the non-integer pixel position motion vector in the dimension.

    摘要翻译： 本公开提供了用于舍入非整数像素位置运动矢量的坐标值的方法和装置。 该方法包括：舍入非整数像素位置运动矢量的坐标值，该坐标值包括：对于非整数像素位置运动矢量的坐标的每个维度，当维度中的坐标是非整数像素位置时， 将尺寸中的非整数像素位置运动矢量的坐标值舍入到整数像素坐标位置A和B之一，如果距维度中的非整数像素位置运动矢量的坐标到整数像素坐标位置A 和B相邻的尺寸上的非整数像素位置的坐标值相同，其中整数像素坐标位置由尺寸中的非整数像素位置运动矢量的坐标值的符号确定。

    Image Encoding and Decoding Methods and Related Devices
    7.
    发明申请
    Image Encoding and Decoding Methods and Related Devices 有权
    图像编码和解码方法及相关设备

    公开(公告)号：US20130216146A1

    公开(公告)日：2013-08-22

    申请号：US13848301

    申请日：2013-03-21

    申请人： Huawei Technologies Co., Ltd.

    发明人： Haoping Yu ,  Xiaozhen Zheng ,  Sixin Lin ,  Jiantong Zhou

    IPC分类号： G06T9/00

    CPC分类号： G06T9/004 ,  G06T9/00 ,  H04N19/119 ,  H04N19/172 ,  H04N19/46 ,  H04N19/537

    摘要： Image encoding and decoding methods and related devices are provided. An image encoding and decoding method includes: for a sub-image block obtained by partitioning an image block, determining at least two position parameters, in which the at least two position parameters include a first position parameter and a second position parameter, the first position parameter identifies whether the sub-image block is a rectangle or not a rectangle, and the second position parameter identifies endpoint information of the sub-image block; determining an encoding sequence of the first position parameter and the second position parameter according to a partition manner of the image block; and encoding the at least two position parameters according to the determined encoding sequence.

    摘要翻译： 提供图像编码和解码方法及相关设备。 图像编码和解码方法包括：对于通过划分图像块获得的子图像块，确定至少两个位置参数，其中所述至少两个位置参数包括第一位置参数和第二位置参数，所述第一位置 参数识别子图像块是矩形还是矩形，第二位置参数识别子图像块的端点信息; 根据图像块的分割方式确定第一位置参数和第二位置参数的编码序列; 以及根据所确定的编码序列对所述至少两个位置参数进行编码。

    Image encoding method and apparatus, and image decoding method and apparatus
    9.
    发明授权
    Image encoding method and apparatus, and image decoding method and apparatus 有权

    公开(公告)号：US10798405B2

    公开(公告)日：2020-10-06

    申请号：US16054306

    申请日：2018-08-03

    申请人： HUAWEI TECHNOLOGIES CO., LTD.

    发明人： Huanbang Chen ,  Sixin Lin ,  Haitao Yang

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

    摘要： 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.