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.

公开(公告)号：US09900601B2

公开(公告)日：2018-02-20

申请号：US15254669

申请日：2016-09-01

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

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593

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：US20170310962A1

公开(公告)日：2017-10-26

申请号：US15649412

申请日：2017-07-13

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/11 ,  H04N19/463 ,  H04N19/46 ,  H04N19/44 ,  H04N19/196 ,  H04N19/186 ,  H04N19/176 ,  H04N19/593 ,  H04N19/159

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.

公开(公告)号：US09667958B2

公开(公告)日：2017-05-30

申请号：US14268115

申请日：2014-05-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Jiantong Zhou

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

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：US20160021388A1

公开(公告)日：2016-01-21

申请号：US14869141

申请日：2015-09-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Jinwen Zan

IPC: H04N19/52 ,  H04N19/573 ,  H04N19/176 ,  H04N19/57 ,  H04N19/105 ,  H04N19/136

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.

Abstract translation: 视频解码方法包括根据比特流中的运动相关信息获取目标区域的N个运动信息，其中N是大于或等于2的整数，通过使用每个对象区域分别对目标区域执行运动补偿操作 在N个运动信息中的运动信息，以获得目标区域的N个预测，其中目标区域的N个预测中的每个预测包括目标区域中的所有采样点的预测值，获取目标区域的预测值 目标区域，其中目标区域的预测选择基准是目标区域的相应参考区域中的所有采样点的值，并且根据目标区域的N个预测和预测选择确定目标区域的最终预测 参考目标区域。

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。

公开(公告)号：US20140079117A1

公开(公告)日：2014-03-20

申请号：US14024047

申请日：2013-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Chao Pang ,  Zilian Ou

IPC: H04N7/26

CPC classification number: H04N19/124 ,  H04N19/115 ,  H04N19/149 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/96

Abstract: An encoding includes: obtaining, by an encoder, data to be encoded, where the data to be encoded is at least one LCU; determining, a quantization depth parameter of the LCU according to a preset bit rate control algorithm, and adding the quantization depth parameter into the data to be encoded; determining, a QP of each CU according to a size of a minimum picture block and a size of each CU included in the LCU; calculating, by the encoder, a QP difference of each CU according to the QP of each CU and a QP prediction value of each CU; for each CU that satisfies a preset condition, carrying, by the encoder, the QP difference of the CU in the CU; and encoding, by the encoder, the quantization depth parameter, the QP difference of the CU that satisfies the preset condition, and each CU to obtain a bit stream.

Abstract translation: 编码包括：由编码器获取待编码的数据，其中要被编码的数据是至少一个LCU; 根据预设比特率控制算法确定LCU的量化深度参数，并将量化深度参数加到待编码的数据中; 根据最小图像块的大小和包括在所述LCU中的每个CU的大小来确定每个CU的QP; 根据每个CU的QP和每个CU的QP预测值，由编码器计算每个CU的QP差; 对于满足预设条件的每个CU，由编码器携带CU中的CU的QP差; 并且由编码器编码量化深度参数，满足预置条件的CU的QP差和每个CU以获得比特流。

公开(公告)号：US12301857B2

公开(公告)日：2025-05-13

申请号：US17716410

申请日：2022-04-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy

IPC: H04N19/503 ,  H04N19/105 ,  H04N19/109 ,  H04N19/119 ,  H04N19/126 ,  H04N19/136 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: The present disclosure relates to moving picture processing, and in particular, to cases where non-rectangular partitioning modes are used for inter-prediction in a combination with weighted prediction (WP) for coding fades. Non-rectangular modes refer to those inter-prediction modes, in which case a current block is partitioned/sliced in a non-rectangular way (slices). Such modes may be triangular (TMP) or geometric (GEO) prediction. The aim of the disclosure is to harmonize non-rectangular partitioning modes with WP by way of disabling TMP/GEO when WP is applied. This may be accomplished by checking whether all reference pictures for a current slice are disabled, and if this is the case to disable the slice-level WP for non-rectangular prediction units. Whether the reference pictures are disabled may be determined based on conditions applied on set values, for example, of luma/chroma flags, which refer to the reference pictures.

公开(公告)号：US12273532B2

公开(公告)日：2025-04-08

申请号：US18654446

申请日：2024-05-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/139 ,  H04N19/119 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/52

Abstract: The present disclosure relates to an apparatus, an encoder, a decoder and corresponding methods for prediction refinement with optical flow (PROF) for an affine coded block, in which when a plurality of optical flow decision conditions are fulfilled for the affine coded block, performing a PROF process for a current sub-block of the affine coded block to obtain refined prediction sample values of the current sub-block of the affine coded block. After the sub-block based affine motion compensation is performed, a prediction sample value of the current sample of the current sub-block is refined by adding a delta prediction value. Thus, it allows for a better trade-off between coding complexity and prediction accuracy.