公开(公告)号：US10523965B2

公开(公告)日：2019-12-31

申请号：US15860531

申请日：2018-01-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhao Wang ,  Siwei Ma ,  Zhuoyi Lv ,  Haitao Yang

IPC: H04N19/56 ,  H04N19/523 ,  H04N19/182

Abstract: Embodiments of the present disclosure disclose a video coding method which includes: obtaining a current picture, motion vector precision of the current picture according to the current picture, where the motion vector precision includes a search step size set, and each search step size in the search step size set is less than a pixel unit; obtaining a current block and a reference picture of the current block; determining a search start point in the reference picture, and searching, from the search start point, for a target integer pixel by using a pixel unit as a search step size; searching, from the target integer pixel, for a match block of the current block according to the motion vector precision; obtaining motion vector information and a prediction residual signal; and the reference picture, the motion vector information, and the prediction residual signal into a bitstream.

公开(公告)号：US20190273929A1

公开(公告)日：2019-09-05

申请号：US16416798

申请日：2019-05-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang

IPC: H04N19/176 ,  H04N19/117 ,  H04N19/196

Abstract: A terminal for de-blocking filtering terminal is configured to determine that a first filtering boundary of a first to-be-filtered block in a target image belongs to a boundary of a pixel area in the target image, where the target image is a planar image obtained by splicing M pixel areas, the M pixel areas are M faces of a polyhedron with the M faces surrounding a spherical panorama image, and filter the first filtering boundary based on a pixel in the first to-be-filtered block and a pixel in a filtering reference block in the target image, where a boundary of the filtering reference block and the first filtering boundary coincide on an edge of the polyhedron with the M faces.

公开(公告)号：US20190268602A1

公开(公告)日：2019-08-29

申请号：US16394763

申请日：2019-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/59 ,  H04N19/186 ,  H04N19/14 ,  H04N19/176 ,  H04N19/105 ,  H04N19/593

Abstract: An intra-frame decoding method is provided. The method includes: obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode, obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.

公开(公告)号：US10390036B2

公开(公告)日：2019-08-20

申请号：US15812719

申请日：2017-11-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/54 ,  H04N19/57 ,  H04N19/513 ,  H04N19/573 ,  H04N19/139 ,  H04N19/176 ,  H04N19/119 ,  H04N19/196 ,  H04N19/53 ,  H04N19/82

Abstract: The present invention provides a video picture coding method, a video picture decoding method, a coding device, and a decoding device. The method includes: determining a motion vector difference of an affine picture block; determining motion vector precision of the affine picture block; determining a size of an affine motion compensation picture subblock in the affine picture block according to the motion vector difference, the motion vector precision, and a distance between control points in the affine picture block, where the control points are pixels used to determine the motion vector difference; and performing coding processing on the affine picture block according to the size of the affine motion compensation picture subblock. In this way, a picture subblock of an appropriate size is selected, so that coding complexity can be reduced, and coding efficiency can be improved.

公开(公告)号：US10313677B2

公开(公告)日：2019-06-04

申请号：US15862240

申请日：2018-01-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/593 ,  H04N19/186 ,  H04N19/59 ,  H04N19/14

Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block; determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block; and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.

公开(公告)号：US20190158825A1

公开(公告)日：2019-05-23

申请号：US16234107

申请日：2018-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/167 ,  H04N19/176

Abstract: A decoding method applied to the field of video processing, where the decoding method includes receiving an encoded bitstream of a two-dimensional panorama picture, determining an applicable spatial layout format of the two-dimensional panorama picture, parsing the encoded bitstream of the two-dimensional panorama picture to determine whether a spatial position relationship between sub-pictures in the two-dimensional panorama picture in the applicable spatial layout format is a default spatial position relationship, and decoding the encoded bitstream of the two-dimensional panorama picture based on the applicable spatial layout format and the default spatial position relationship when the spatial position relationship between the sub-pictures in the two-dimensional panorama picture in the applicable spatial layout format is the default spatial position relationship.

公开(公告)号：US10091531B2

公开(公告)日：2018-10-02

申请号：US15492868

申请日：2017-04-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Jiantong Zhou

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/463 ,  H04N19/126 ,  H04N19/136 ,  H04N19/91

Abstract: An embodiment of the present invention provides an image coding method, where the coding method includes: performing predictive coding on an image; performing transform coding on the image on which the predictive coding has been performed; performing, by using a quantization matrix, quantization coding on the image on which the transform coding has been performed, where the quantization matrix is a matrix reflecting image quantization step information, the quantization matrix includes an M*N quantization matrix and an N*M quantization matrix, and the N*M quantization matrix is obtained by transposing the M*N quantization matrix; and performing entropy coding on the image on which the quantization coding has been performed, and coding the M*N quantization matrix, so as to generate a code stream. In the present invention, the number of bits required for coding a quantization matrix is effectively saved, thereby improving compression efficiency.

公开(公告)号：US20180249177A1

公开(公告)日：2018-08-30

申请号：US15965162

申请日：2018-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sixin Lin ,  Xiang Zhang ,  Siwei Ma ,  Haitao Yang

IPC: H04N19/59 ,  H04N19/105 ,  H04N19/172

Abstract: A reference frame decoding method includes obtaining a first reference frame, where the first reference frame is a first picture frame on which decoding reconstruction has been performed or a first interpolated picture frame obtained by pixel interpolation on the first picture frame, parsing a bitstream to obtain mapping parameters, determining to-be-determined coefficients of a preset mapping function according to the mapping parameters, obtaining, in the first reference frame according to the mapping function whose to-be-determined coefficients have been determined, a first pixel unit having a mapping relationship with a second pixel unit of a second reference frame, and assigning a pixel value of the first pixel unit to the second pixel unit.

公开(公告)号：US20180131960A1

公开(公告)日：2018-05-10

申请号：US15860531

申请日：2018-01-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhao Wang ,  Siwei Ma ,  Zhuoyi Lv ,  Haitao Yang

IPC: H04N19/56 ,  H04N19/523

CPC classification number: H04N19/56 ,  H04N19/109 ,  H04N19/136 ,  H04N19/139 ,  H04N19/14 ,  H04N19/182 ,  H04N19/523 ,  H04N19/533 ,  H04N19/57

Abstract: Embodiments of the present disclosure disclose a video coding method which includes: obtaining a current picture, motion vector precision of the current picture according to the current picture, where the motion vector precision includes a search step size set, and each search step size in the search step size set is less than a pixel unit; obtaining a current block and a reference picture of the current block; determining a search start point in the reference picture, and searching, from the search start point, for a target integer pixel by using a pixel unit as a search step size; searching, from the target integer pixel, for a match block of the current block according to the motion vector precision; obtaining motion vector information and a prediction residual signal; and the reference picture, the motion vector information, and the prediction residual signal into a bitstream.

公开(公告)号：US20180070102A1

公开(公告)日：2018-03-08

申请号：US15812719

申请日：2017-11-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang

IPC: H04N19/513 ,  H04N19/573 ,  H04N19/57

CPC classification number: H04N19/521 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/196 ,  H04N19/52 ,  H04N19/53 ,  H04N19/54 ,  H04N19/57 ,  H04N19/573 ,  H04N19/82

Abstract: The present invention provides a video picture coding method, a video picture decoding method, a coding device, and a decoding device. The method includes: determining a motion vector difference of an affine picture block; determining motion vector precision of the affine picture block; determining a size of an affine motion compensation picture subblock in the affine picture block according to the motion vector difference, the motion vector precision, and a distance between control points in the affine picture block, where the control points are pixels used to determine the motion vector difference; and performing coding processing on the affine picture block according to the size of the affine motion compensation picture subblock. In this way, a picture subblock of an appropriate size is selected, so that coding complexity can be reduced, and coding efficiency can be improved.