公开(公告)号：US20140112593A1

公开(公告)日：2014-04-24

申请号：US14144059

申请日：2013-12-30

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

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

IPC: H04N19/60

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：US20240340427A1

公开(公告)日：2024-10-10

申请号：US18597291

申请日：2024-03-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu CHEN ,  Jianhua ZHENG

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: An inter prediction method and apparatus, and a corresponding encoder and decoder are disclosed. The method includes: obtaining an index value of a length of a motion vector difference of the current picture block; determining target length information from a set of candidate length information based on the index value of the length; obtaining the motion vector difference of the current picture block based on the target length information; determining the motion vector target value of the current picture block based on the motion vector difference of the current picture block and the motion vector predictor of the current picture block; and obtaining a prediction block of the current picture block based on the motion vector target value of the current picture block.

公开(公告)号：US20220353497A1

公开(公告)日：2022-11-03

申请号：US17865233

申请日：2022-07-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu CHEN ,  Jianhua ZHENG

IPC: 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：US20210235097A1

公开(公告)日：2021-07-29

申请号：US17230699

申请日：2021-04-14

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

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

IPC: H04N19/176 ,  H04N19/60 ,  H04N19/172 ,  H04N19/184

Abstract: This application provides a transform method and an inverse transform method for a picture block, and an apparatus. The transform method for a picture block in this application includes: obtaining a to-be-encoded picture block in a to-be-processed picture, where the to-be-encoded picture block is an object on which encoding is performed; splitting the to-be-encoded picture block to obtain a plurality of picture subblocks; and transforming at least one of the picture subblocks. In this application, picture encoding efficiency is improved.

公开(公告)号：US20210185325A1

公开(公告)日：2021-06-17

申请号：US17190041

申请日：2021-03-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu CHEN ,  Jianhua ZHENG

IPC: H04N19/139 ,  H04N19/147 ,  H04N19/176

Abstract: This application discloses a motion vector obtaining method and apparatus, a computer device, and a storage medium. In the method, an initial motion vector of a to-be-processed picture block is determined by using a location relationship between a reference block and the to-be-processed picture block. When the reference block and the to-be-processed picture block are located in a same coding tree block, a decoder uses an initial motion vector of the reference block as the initial motion vector of the to-be-processed picture block. When the reference block and the to-be-processed picture block are located in different coding tree blocks, the decoder uses a final motion vector of the reference block as the initial motion vector of the to-be-processed picture block.

公开(公告)号：US20200021850A1

公开(公告)日：2020-01-16

申请号：US16579440

申请日：2019-09-23

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

Inventor： Benben NIU ,  Quanhe YU ,  Junyou CHEN ,  Jianhua ZHENG ,  Yun HE

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/11 ,  H04N19/513 ,  H04N19/182 ,  H04N19/147

Abstract: The present disclosure disclose a video data decoding method. The method includes: receiving a bitstream; parsing the bitstream to obtain residual data of a current to-be-decoded image block, prediction information of the current to-be-decoded image block, and a pixel value transformation mode identifier of the current to-be-decoded block; obtaining predictors of the current to-be-decoded image block; obtaining reconstructed pixel values of pixels of the current to-be-decoded image block; and performing spatial transformation on the reconstructed pixel values of the pixels of the current to-be-decoded image block according to a pixel value transformation mode corresponding to the transformation mode identifier of the current to-be-decoded image block, to obtain transformed pixel values of the pixels of the current to-be-decoded image block. The embodiments of the present disclosure further disclose a video data encoding method, a decoding apparatus, and an encoding apparatus.

公开(公告)号：US20200014927A1

公开(公告)日：2020-01-09

申请号：US16573148

申请日：2019-09-17

Applicant: HUAWEI TECHNOLOGIES CO.,LTD. ,  TSINGHUA UNIVERSITY

Inventor： Xiaozhen ZHENG ,  Zhen MAO ,  Ziyuan WANG ,  Yun HE ,  Xiaozhong XU ,  Jianhua ZHENG

IPC: H04N19/126 ,  H04N19/17 ,  H04N19/174 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/46

Abstract: A method and device for coding and decoding are disclosed. The method includes: dividing a picture to be encoded into several slices, each containing macroblocks continuous in a designated scanning sequence in the picture; dividing slices in the picture into one or more slice sets according to attribute information of the slices, each slice set containing one or more slices; and encoding the slices in the slice sets according to slice and slice set division information to get a coded bit stream of the picture. The decoding method includes: obtaining slice and slice set division information from a bit stream to be decoded and decoding the bit stream according to the obtained slice and slice set division information. The invention improves the performance of video transmission effectively and realizes region based coding. The implementation of coding and decoding is simple and the complexity of coding and decoding systems is reduced.

公开(公告)号：US20180376047A1

公开(公告)日：2018-12-27

申请号：US15986149

申请日：2018-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N5/235 ,  G06F7/483 ,  G06T5/00 ,  H04N19/186 ,  H03M7/24

Abstract: The present disclosure discloses a method and an apparatus for processing image signal conversion. In one example method, an input primary color signal is obtained. The primary color signal is a numeric value of an optical signal corresponding to an image. The primary color signal is proportional to light intensity. Conversion processing is performed on the primary color signal to obtain processed image information. The image information is a numeric expression value of the image. The conversion processing includes at least the following processing: L ′ = a  ( pL ( p - 1 )  L + 1 ) m + b , where a, b, m, and p are rational numbers, L is the input primary color signal, and L′ is the processed image information.

公开(公告)号：US20180324453A1

公开(公告)日：2018-11-08

申请号：US16032748

申请日：2018-07-11

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

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

IPC: H04N19/517 ,  H04N19/48 ,  H04N19/176 ,  H04N19/12 ,  H04N19/172 ,  H04N19/147 ,  H04N19/463

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.

公开(公告)号：US20160198163A1

公开(公告)日：2016-07-07

申请号：US14985015

申请日：2015-12-30

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jianhua ZHENG ,  Jianwen CHEN ,  Yun HE ,  Xinjian MENG

IPC: H04N19/174 ,  H04N19/176 ,  H04N19/70 ,  H04N19/18 ,  H04N19/61 ,  H04N19/126 ,  H04N19/177

CPC classification number: H04N19/174 ,  H04N19/126 ,  H04N19/154 ,  H04N19/176 ,  H04N19/177 ,  H04N19/18 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

Abstract: An apparatus at an encoding end and an apparatus at decoding end are provided for implementing quantization in encoding and decoding an image in a process of transmission. The apparatus at an encoding end includes a memory storage and a processor coupled to the memory that executes the instructions to perform quantization using a coefficient matrix on an image, the coefficient matrix having a plurality of coefficients which being divided into a plurality of frequency bands, wherein a number of the frequency bands is smaller than a number of coefficients in the coefficient matrix; a scaling value is assigned that every coefficient in said each frequency band has the same scaling value; generate a parameter set having multiple band parameters thereof and write the parameter set into a bitstream to be transmitted. An apparatus at a decoding end performs decoding process thereof.

Abstract translation: 提供编码端的装置和解码端的装置，用于在传输过程中对图像进行编码和解码实现量化。 编码端的装置包括存储器存储器和耦合到存储器的处理器，其执行使用图像上的系数矩阵执行量化的指令，所述系数矩阵具有被划分成多个频带的多个系数， 其中所述频带的数量小于所述系数矩阵中的系数数; 分配缩放值，表示所述每个频带中的每个系数具有相同的缩放值; 生成具有多个频带参数的参数集，并将参数集写入要发送的比特流中。 解码端的装置执行解码处理。