公开(公告)号：US10560714B2

公开(公告)日：2020-02-11

申请号：US15855005

申请日：2017-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

IPC: H04N19/52 ,  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.

公开(公告)号：US10536692B2

公开(公告)日：2020-01-14

申请号：US15454356

申请日：2017-03-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xin Huang ,  Hong Zhang ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/567 ,  H04N19/44 ,  H04N19/51 ,  H04N19/182 ,  H04N19/513

Abstract: A picture prediction method and a related apparatus are disclosed, which includes: determining N templates whose degrees of matching with a current template meet a preset condition, where the current template is a template corresponding to a current picture block, and the M templates are obtained by searching reference pictures of the current picture block; determining a weight of a pixel area in a picture block corresponding to each template in the N templates, where weights of at least two pixel areas in a picture block corresponding to at least one template in the N templates are different; and calculating a predicted pixel value of a pixel area in the current picture block based on the weight and a pixel value of the pixel area in the picture block corresponding to each template in the N templates, where the pixel area includes at least one pixel.

公开(公告)号：US10455236B2

公开(公告)日：2019-10-22

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 ,  H04N19/593 ,  H04N19/176 ,  H04N19/105 ,  H04N19/14

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：US10404993B2

公开(公告)日：2019-09-03

申请号：US15699515

申请日：2017-09-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang Chen ,  Sixin Lin ,  Fan Liang ,  Haitao Yang

IPC: H04N19/51 ,  H04N19/513 ,  H04N19/119 ,  H04N19/537

Abstract: A picture prediction method includes: determining two pixel samples in a current picture block, and determining a candidate motion information unit set corresponding to each of the two pixel samples; determining a merged motion information unit set i including two motion information units; and predicting a pixel value of the current picture block by using an affine motion model and the merged motion information unit set i.

公开(公告)号：US10219003B2

公开(公告)日：2019-02-26

申请号：US15362477

申请日：2016-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xin Huang ,  Haitao Yang

IPC: H04N19/593 ,  H04N19/129 ,  H04N19/182 ,  H04N19/176 ,  H04N19/157 ,  H04N19/11 ,  H04N19/124 ,  H04N19/147

Abstract: According to intra-frame predictive coding and decoding methods based on template matching, an array scanning method and apparatus, and an apparatus are disclosed in embodiments of the present disclosure, where templates of at least two shapes are used to calculate predicted pixel values of a to-be-predicted unit. Templates of different shapes can represent different textures; when a correlation between a texture of a template of a shape and a texture of a to-be-predicted unit is low, a template of another shape may be selected and used, and a matching degree between a texture of a template and a texture of a to-be-predicted unit can be increased. In this way, an optimal predicted pixel value is determined from at least two predicted pixel values, and accuracy of the optimal predicted pixel value is higher than accuracy of a predicted pixel value determined by using a template of a single shape.

公开(公告)号：US20180184108A1

公开(公告)日：2018-06-28

申请号：US15901410

申请日：2018-02-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang

IPC: H04N19/513

CPC classification number: H04N19/513 ,  H04N19/174 ,  H04N19/31 ,  H04N19/40 ,  H04N19/52 ,  H04N19/53 ,  H04N19/537 ,  H04N19/567 ,  H04N19/573 ,  H04N19/577

Abstract: A motion vector field coding and decoding method, where the method includes obtaining an original signal of a current motion vector field block, where the current motion vector field block is obtained by dividing a current motion vector field into blocks, and the current motion vector field is a motion vector field corresponding to a video frame at a moment t, obtaining a prediction signal of the current motion vector field block and prediction information of the current motion vector field block, calculating a prediction residual signal of the current motion vector field block according to the prediction signal and the original signal, where the prediction residual signal is used to indicate a residual between the original signal and the prediction signal, and writing the prediction information and the prediction residual signal into a bitstream.

公开(公告)号：US20180070099A1

公开(公告)日：2018-03-08

申请号：US15797728

申请日：2017-10-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/139 ,  H04N19/44 ,  H04N19/172 ,  H04N19/182

Abstract: A video coding method includes obtaining a first motion vector field (MVF) set, obtaining a plurality of second MVFs according to the first MVF set and based on a preset vector operation method, determining a motion compensation prediction (MCP) signal of the target sub picture block from M MCP reference pictures according to the plurality of second MVFs and based on an MCP algorithm, obtaining a prediction residual of the target sub picture block according to a picture signal of the target sub picture block and the MCP signal of the target sub picture block, performing coding processing on the prediction residual of the target sub picture block to obtain a coded signal of the prediction residual of the target sub picture block, and sending the coded signal of the prediction residual of the target sub picture block to a peer decoder.

公开(公告)号：US20170223381A1

公开(公告)日：2017-08-03

申请号：US15492868

申请日：2017-04-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Jiantong Zhou

IPC: H04N19/61 ,  H04N19/91 ,  H04N19/126

CPC classification number: H04N19/61 ,  H04N19/126 ,  H04N19/136 ,  H04N19/176 ,  H04N19/463 ,  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：US09706220B2

公开(公告)日：2017-07-11

申请号：US14869141

申请日：2015-09-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Jinwen Zan

IPC: H04N19/00 ,  H04N19/52 ,  H04N19/176 ,  H04N19/105 ,  H04N19/136 ,  H04N19/57 ,  H04N19/573 ,  H04N19/109 ,  H04N19/537

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/109 ,  H04N19/136 ,  H04N19/176 ,  H04N19/537 ,  H04N19/57 ,  H04N19/573

Abstract: A video decoding method includes acquiring N pieces of motion information of a target area according to motion-related information in a bitstream, where N is an integer greater than or equal to 2, separately performing a motion compensation operation on the target area by using each piece of motion information in the N pieces of motion information to obtain N predictions of the target area, where each prediction in the N predictions of the target area includes predicted values of all sampling points in the target area, acquiring a prediction selection reference of the target area, where the prediction selection reference of the target area is values of all sampling points in a corresponding reference area of the target area, and determining a final prediction of the target area according to the N predictions of the target area and the prediction selection reference of the target area.

公开(公告)号：US09602816B2

公开(公告)日：2017-03-21

申请号：US14274408

申请日：2014-05-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xing Wen ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/52 ,  H04N19/583 ,  H04N19/436

CPC classification number: H04N19/51 ,  H04N19/436 ,  H04N19/52

Abstract: The present invention relates to a method for coding and decoding a video signal, and provides a method for coding a video signal, including: determining space adjacent motion information of a parallel motion processing region PR; determining time adjacent motion information of a current block, where the current block is located in the parallel motion processing region PR; determining a candidate mot ion information set according to the space adjacent motion information of the parallel motion processing region PR and the time adjacent motion information of the current block; selecting motion information of the current block from the candidate motion information set, and sending a motion information indication of the current block to a decoding end, so as to assist the decoding end in determining the motion information of the current block; and performing motion compensation coding for the current block according to the motion information of the current block.