公开(公告)号：US20180103258A1

公开(公告)日：2018-04-12

申请号：US15835771

申请日：2017-12-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hai CHEN ,  Meng LI ,  Xiaozhen ZHENG ,  Jianhua ZHENG

IPC: H04N19/186 ,  H04N19/196 ,  H04N19/182 ,  H04N19/124

CPC classification number: H04N19/186 ,  H04N19/124 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/46 ,  H04N19/98

Abstract: Embodiments of the present disclosure provide a video encoding method, a video decoding method, a video encoder, and a video decoder. The video encoding method includes: obtaining a to-be-encoded HDR image frame, where the HDR image frame includes multiple image blocks; determining, in multiple preset optical-electro transfer functions according to a statistical luminance value of each of the multiple image blocks, an optical-electro transfer function corresponding to the image block; performing optical-to-electrical conversion on the image block according to the optical-electro transfer function corresponding to the image block; and encoding the multiple image blocks on which the optical-to-electrical conversion has been performed. According to the embodiments of the present disclosure, one corresponding optical-electro transfer function is set for each image block, so as to improve a video encoding effect and better adapt to an existing video encoding framework.

公开(公告)号：US20160381375A1

公开(公告)日：2016-12-29

申请号：US15261437

申请日：2016-09-09

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Xiaoran CAO ,  Yun HE ,  Xiaozhen ZHENG ,  Jianhua ZHENG

IPC: H04N19/517 ,  H04N19/176 ,  H04N19/172 ,  H04N19/48

CPC classification number: H04N19/517 ,  H04N19/12 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/463 ,  H04N19/48

Abstract: The present application discloses an image coding/decoding method, device, and system, where an encoder performs singular vector decomposition on a prediction block corresponding to a to-be-coded image block, to obtain eigenvector matrices U and V of the prediction block; and performs coding processing on residual data according to the eigenvector matrices U and V of the prediction block, where the residual data is a difference between a pixel value of the to-be-coded image block and a pixel value of the corresponding prediction block. This can reduce identifier load of a coded bit stream.

Abstract translation: 本申请公开了一种图像编码/解码方法，装置和系统，其中编码器对与待编码的图像块相对应的预测块执行奇异矢量分解，以获得预测块的特征向量矩阵U和V; 并且根据预测块的特征向量矩阵U和V对剩余数据执行编码处理，其中残留数据是要编码的图像块的像素值与相应的预测块的像素值之间的差。 这可以减少编码比特流的标识符负载。

公开(公告)号：US20160219308A1

公开(公告)日：2016-07-28

申请号：US15091378

申请日：2016-04-05

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Xiaozhen ZHENG ,  Yuan YUAN ,  Jianhua ZHENG ,  Yun HE

IPC: H04N19/85 ,  H04N19/176 ,  H04N19/61 ,  H04N19/122

CPC classification number: H04N19/85 ,  H04N19/122 ,  H04N19/176 ,  H04N19/60 ,  H04N19/61 ,  H04N19/96

Abstract: The present disclosure provides a method for obtaining a size of a transform block, where the method includes: obtaining a dividing manner of an image block; and obtaining size information of a post-dividing transform block according to the dividing manner of the image block and a width and a height of a pre-dividing transform block. By using the method for obtaining a size of a transform block provided in this embodiment of the present disclosure, a size of a transform block may be coded according to a dividing manner of an image block or a height and a width of a pre-dividing transform block, thereby effectively improving coding efficiency.

Abstract translation: 本公开提供了一种用于获得变换块的大小的方法，其中该方法包括：获得图像块的分割方式; 以及根据图像块的分割方式和预分割变换块的宽度和高度来获得后分割变换块的大小信息。 通过使用用于获得本公开的本实施例中提供的变换块的大小的方法，可以根据图像块的分割方式或预分割的高度和宽度对变换块的大小进行编码 转换块，从而有效提高编码效率。

公开(公告)号：US20140241427A1

公开(公告)日：2014-08-28

申请号：US14273149

申请日：2014-05-08

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Yunfei WANG ,  Jianhua ZHENG ,  Xiaozhen ZHENG ,  Yun HE

IPC: H04N19/126 ,  H04N19/132 ,  H04N19/169 ,  H04N19/187 ,  H04N19/176

CPC classification number: H04N19/126 ,  H04N19/132 ,  H04N19/167 ,  H04N19/184 ,  H04N19/30 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

Abstract: The present disclosure provides a method and an apparatus for coding or decoding a matrix, includes: dividing a matrix into layers according to a preset quantity of divided layers, and grouping matrix elements into different layers; performing, according to a determined layer number of a highest layer to be coded and in an order of layers one by one, coding processing on matrix elements at each layer to be coded; for a layer having a layer number less than or equal to the layer number of the highest layer to be coded, writing residual data between an original matrix element value corresponding to the layer and a corresponding matrix element predicted value into a bit stream; for a layer having a layer number greater than the layer number of the highest layer to be coded, writing no coded data of the layer into the bit stream.

Abstract translation: 本公开提供了一种用于对矩阵进行编码或解码的方法和装置，包括：根据预设的分割层数将矩阵划分成层，并将矩阵元素分组成不同的层; 根据要编码的最高层的确定层号和逐层的顺序执行对要编码的每层的矩阵元素的编码处理; 对于具有小于或等于要编码的最高层的层号的层号的层，将与该层对应的原始矩阵元素值与相应的矩阵元素预测值之间的残差数据写入比特流; 对于具有大于要编码的最高层的层编号的层数的层，将该层的编码数据写入比特流。

公开(公告)号：US20240040113A1

公开(公告)日：2024-02-01

申请号：US18361596

申请日：2023-07-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu CHEN ,  Jianhua ZHENG

IPC: H04N19/109 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

CPC classification number: H04N19/109 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: This application provides a video picture decoding and encoding method and a video picture decoding and encoding apparatus. When it is determined that a merge or skip mode is used, if it is determined through decoding that a merge mode with motion vector difference (MMVD) indicator is true, a triangle prediction unit (PU) indicator may not be coded. The triangle PU indicator is coded when it is determined through decoding that the MMVD indicator is false. This reduces a quantity of used coding resources, and can reduce bit overheads of a bitstream.

公开(公告)号：US20230010907A1

公开(公告)日：2023-01-12

申请号：US17872240

申请日：2022-07-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Na ZHANG ,  Jicheng AN ,  Quanhe YU ,  Jianhua ZHENG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/30 ,  H04N19/176

Abstract: An inter prediction method is provided, including: obtaining a first reference frame index and a first motion vector of a to-be-processed block (101); deriving a second reference frame index from the first reference frame index, where the second reference frame index is different from the first reference frame index (102); scaling the first motion vector to obtain a second motion vector (103); obtaining a first reference block of the to-be-processed block according to the first reference frame index and the first motion vector (104); obtaining a second reference block of the to-be-processed block according to the second reference frame index and the second motion vector (105); and weighting the first reference block and the second reference block to obtain a combined prediction block (106). Each reference list for inter prediction is allowed to include two groups of motion information, which helps improve an inter prediction effect.

公开(公告)号：US20210329229A1

公开(公告)日：2021-10-21

申请号：US17339746

申请日：2021-06-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu CHEN ,  Jianhua ZHENG

IPC: H04N19/109 ,  H04N19/176 ,  H04N19/132 ,  H04N19/70 ,  H04N19/52 ,  H04N19/159

Abstract: This application provides a video picture decoding and encoding method and a video picture decoding and encoding apparatus. When it is determined that a merge or skip mode is used, if it is determined through decoding that an MMVD indicator is true, a triangle PU indicator may not be coded. The triangle PU indicator is coded only when it is determined through decoding that the MMVD indicator is false. This reduces a quantity of used coding resources, and can reduce bit overheads of a bitstream.

公开(公告)号：US20210235084A1

公开(公告)日：2021-07-29

申请号：US17231825

申请日：2021-04-15

Applicant: Huawei Technologies Co., Ltd. ,  TSINGHUA UNIVERSITY

Inventor： Quanhe YU ,  Jianhua ZHENG ,  Liqiang WANG ,  Yun HE

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/146 ,  H04N19/176

Abstract: This application provides a picture block splitting method and an apparatus. The picture block splitting method in this application includes: obtaining a picture block in a to-be-processed picture, where the picture block is an object on which encoding is performed; determining, based on a length of a first side and a length of a second side of the picture block, a block splitting method used for the picture block, where the first side and the second side are two neighboring sides of the picture block, the first side is a horizontal line, and the second side is a vertical line; and splitting the picture block according to the block splitting method. In this application, an unnecessary block splitting method is omitted, operation overheads are reduced, and picture encoding efficiency is improved.

公开(公告)号：US20210067796A1

公开(公告)日：2021-03-04

申请号：US16949793

申请日：2020-11-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu CHEN ,  Jicheng AN ,  Jianhua ZHENG

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/105

Abstract: Embodiments of this application disclose a method for obtaining a motion vector, including: determining a reference block of a to-be-processed block, wherein the reference block and the to-be-processed block have a preset temporal or spatial correlation, the reference block is obtained based on a prediction block of the reference block determined by a refined initial motion vector, the refined initial motion vector is obtained based on an initial motion vector and one or more preset motion vector offsets, and the initial motion vector is obtained based on a predicted motion vector of the reference block; and using the initial motion vector as a predicted motion vector of the to-be-processed block.

公开(公告)号：US20210021874A1

公开(公告)日：2021-01-21

申请号：US17062110

申请日：2020-10-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianhua ZHENG ,  Quanhe YU ,  Meng LI ,  Hai CHEN ,  Chen-Xiong ZHANG

IPC: H04N19/98 ,  H04N19/70 ,  H04N19/13 ,  H04N19/186

Abstract: A video coding mechanism is disclosed. The mechanism includes at least one pre-encoder configured to pre-encode a received input video signal, and output a pre-encoded video signal. The mechanism also includes an encoder configured to obtain the pre-encoded video signal from the pre-encoder, and encode the pre-encoded video signal as a bitstream for transmitting the bitstream to decoder for decoding.