公开(公告)号：US20210160504A1

公开(公告)日：2021-05-27

申请号：US17164502

申请日：2021-02-01

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

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

IPC: H04N19/126 ,  H04N19/70 ,  H04N19/61 ,  H04N19/174 ,  H04N19/17 ,  H04N19/436 ,  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：US20180332304A1

公开(公告)日：2018-11-15

申请号：US16044194

申请日：2018-07-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaozhen ZHENG

IPC: H04N19/593 ,  H04N19/182 ,  H04N19/597 ,  H04N19/105 ,  H04N19/159 ,  H04N19/11 ,  H04N13/161

CPC classification number: H04N19/593 ,  H04N13/161 ,  H04N19/105 ,  H04N19/11 ,  H04N19/159 ,  H04N19/182 ,  H04N19/597

Abstract: Embodiments of the present invention provide methods and apparatuses for coding and decoding a depth map, where the coding method includes: acquiring an intra-frame prediction mode of a current image block of the depth map; determining whether the intra-frame prediction mode belongs to a preset intra-frame prediction mode set; if yes, using a preset intra-frame prediction method to perform coding processing on the current image block, so as to acquire a residual of the current image block. The preset intra-frame prediction method includes a first intra-frame prediction method; and a difference operation is performed between an average pixel value of the current image block and an average pixel value of prediction data of the current image block to obtain the residual of the current image block.

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：US20160330476A1

公开(公告)日：2016-11-10

申请号：US15217334

申请日：2016-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaozhen ZHENG

IPC: H04N19/583 ,  H04N19/91 ,  H04N19/119 ,  H04N19/176

CPC classification number: H04N19/583 ,  H04N19/119 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/593 ,  H04N19/91

Abstract: A coding method includes: partitioning an image block to be decoded irregularly according to an irregular partitioning mode and a position parameter to obtain at least two different sub-blocks; comparing the sub-blocks with a reference sub-block to obtain a residual of a pixel value of the image block to be coded; obtaining a reference position parameter according to a surrounding block of the image block to be coded, and subtracting the reference position parameter from the position parameter of the image block to be coded to obtain a position parameter difference of the image block to be coded; quantizing the residual, and performing entropy coding on a result of the quantization, the motion vector information, and the position parameter difference; and writing the entropy coding result and partitioning mode information of the image block into a code stream.

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：US20140177713A1

公开(公告)日：2014-06-26

申请号：US14141201

申请日：2013-12-26

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

Inventor： Yuan YUAN ,  Xiaozhen ZHENG ,  Yun HE

IPC: H04N19/61 ,  H04N19/44

CPC classification number: H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  H04N19/60 ,  H04N19/61 ,  H04N19/96

Abstract: Embodiments of the present invention provide a method and a device for determining a transform block size, and can improve image compression efficiency. The method includes: obtaining, according to image block information and a splitting manner of an image block, a parameter of a transform block corresponding to the image block; and obtaining a transform block size according to the parameter of the transform block and the splitting manner of the image block. In the embodiments of the present invention, during determination of a transform block size, the transform block size is obtained according to a splitting manner of an image block and a parameter of a transform block corresponding to the image block. Therefore, a transform block matching the splitting manner of the image block can be used, improving image compression efficiency.

Abstract translation: 本发明的实施例提供了一种用于确定变换块大小的方法和装置，并且可以提高图像压缩效率。 该方法包括：根据图像块信息和图像块的分割方式获得与该图像块相对应的变换块的参数; 并根据变换块的参数和图像块的分割方式获得变换块大小。 在本发明的实施例中，在确定变换块大小期间，根据图像块的分割方式和对应于图像块的变换块的参数获得变换块大小。 因此，可以使用与图像块的分割方式匹配的变换块，提高图像压缩效率。

公开(公告)号：US20210168399A1

公开(公告)日：2021-06-03

申请号：US17121263

申请日：2020-12-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongbing LIN ,  Xiaozhen ZHENG

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/11 ,  H04N19/196

Abstract: A method for processing an intra prediction mode includes: determining whether an intra prediction mode of each neighboring block in multiple neighboring blocks of a current block is applicable to the current block; and obtaining multiple mapped intra prediction modes of the current block according to a result of the determining, if it is determined that an intra prediction mode of a neighboring block is applicable to the current block, setting the intra prediction mode of the neighboring block as a mapped intra prediction mode of the current block, and if it is determined that the intra prediction mode of the neighboring block is not applicable to the current block, setting a specific intra prediction mode as the mapped intra prediction mode of the current block.

公开(公告)号：US20190098336A1

公开(公告)日：2019-03-28

申请号：US16201580

申请日：2018-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongbing LIN ,  Xiaozhen ZHENG

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/196 ,  H04N19/176

Abstract: A method for processing an intra prediction mode includes: determining whether an intra prediction mode of each neighboring block in multiple neighboring blocks of a current block is applicable to the current block; and obtaining multiple mapped intra prediction modes of the current block according to a result of the determining, if it is determined that an intra prediction mode of a neighboring block is applicable to the current block, setting the intra prediction mode of the neighboring block as a mapped intra prediction mode of the current block, and if it is determined that the intra prediction mode of the neighboring block is not applicable to the current block, setting a specific intra prediction mode as the mapped intra prediction mode of the current block.