公开(公告)号：US20160142710A1

公开(公告)日：2016-05-19

申请号：US14979355

申请日：2015-12-22

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

Inventor： Weiran LI ,  Xiaozhen ZHENG ,  Yun HE

IPC: H04N19/119 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/463

Abstract: Embodiments of the present disclosure provide an image encoding and decoding method and apparatus. A division mode used for a current image block is acquired, division information of the current image block is acquired according to the division mode, and encoding processing is performed on a division mode identifier and the division information that correspond to the division mode, so that a decoder obtains, according to the division mode identifier and the division information, a division template used by an encoder, so as to perform decoding. The encoder and the decoder do not need to store a large quantity of division templates, thereby lightening a burden on an encoding and decoding system.

Abstract translation: 本公开的实施例提供了图像编码和解码方法和装置。 采用用于当前图像块的分割模式，根据分割模式获取当前图像块的分割信息，并且对分割模式标识符和对应于分割模式的分割信息执行编码处理，使得 解码器根据分割模式标识符和分割信息获得由编码器使用的分割模板，以便执行解码。 编码器和解码器不需要存储大量的分割模板，从而减轻编码和解码系统的负担。

公开(公告)号：US20140341278A1

公开(公告)日：2014-11-20

申请号：US14451083

申请日：2014-08-04

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

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

IPC: H04N19/174 ,  H04N19/70 ,  H04N19/126

CPC classification number: H04N19/126 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/436 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

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.

Abstract translation: 公开了一种用于编码和解码的方法和装置。 该方法包括：将要编码的图像划分成若干片，每片包含图像中指定的扫描序列连续的宏块; 根据切片的属性信息将图片中的切片分成一个或多个切片组，每个切片组包含一个或多个切片; 并根据切片和切片集分割信息对切片集中的切片进行编码以获得图像的编码比特流。 解码方法包括：从要解码的比特流获取切片和切片集分割信息，并根据获得的切片和切片集分割信息对比特流进行解码。 本发明有效地提高了视频传输的性能，实现了基于区域的编码。 编码和解码的实现简单，编码和解码系统的复杂度降低。

公开(公告)号：US20140010469A1

公开(公告)日：2014-01-09

申请号：US14026682

申请日：2013-09-13

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

Inventor： Yuan YUAN ,  Xiaozhen ZHENG ,  Lingzhi LIU ,  Yunfei WANG ,  Xiaoran CAO ,  Yun HE

IPC: H04N7/50

CPC classification number: H04N19/61 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46

Abstract: A picture encoding and decoding method, a picture encoding and decoding device and a network system are provided, in which, the picture encoding method includes: determining a prediction block used by a picture block according to a division manner of the picture block; determining a corresponding division level in the picture block or the prediction block of transform blocks corresponding to the picture block or the prediction block, in which, the transform blocks corresponding to the picture block or the prediction block include one or more transform blocks; determining a size of the transform blocks corresponding to the picture block or the prediction block according to the division manner of the picture block and the division level; determining identification information for identifying the division level corresponding to the transform blocks corresponding to the picture block or the prediction block; and writing the identification information into a code stream.

Abstract translation: 提供了图像编码和解码方法，图像编码和解码装置以及网络系统，其中图像编码方法包括：根据图像块的分割方式确定图像块使用的预测块; 确定对应于图像块或预测块的图像块或变换块的预测块中的对应分割电平，其中对应于图像块或预测块的变换块包括一个或多个变换块; 根据图像块的分割方式和划分级别确定与图像块或预测块相对应的变换块的大小; 确定用于识别与对应于图像块或预测块的变换块相对应的分割电平的识别信息; 并将识别信息写入代码流。

公开(公告)号：US20210067777A1

公开(公告)日：2021-03-04

申请号：US17094560

申请日：2020-11-10

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

Inventor： Changcai LAI ,  Xiaoran CAO ,  Yongbing LIN ,  Lingzhi LIU ,  Yun HE

IPC: H04N19/119 ,  H04N19/147 ,  H04N19/124 ,  H04N19/172

Abstract: An encoding method with multiple image block division manners is disclosed, including: determining a division manner and a division direction of an image block; dividing the image block to obtain image subblocks sequentially arranged horizontally or vertically; determining whether the image subblocks need subdivision, and if subdivision is not needed, predicting the encoding object in the frame according to the image subblocks, to obtain residual data; performing transformation, quantization, and entropy encoding for the residual data so as to obtain coded residual data; and writing the division manner of the image block, the division direction of the image block, an identifier indicating whether the image subblocks need subdivision, and the coded residual data into a bitstream. By applying the encoding method, better prediction accuracy can be achieved when the image block presents a small change of pixel value in the horizontal or vertical direction.

公开(公告)号：US20190082180A1

公开(公告)日：2019-03-14

申请号：US16157739

申请日：2018-10-11

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

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

IPC: H04N19/126 ,  H04N19/184 ,  H04N19/167 ,  H04N19/593 ,  H04N19/91 ,  H04N19/132 ,  H04N19/463 ,  H04N19/93 ,  H04N19/70 ,  H04N19/30

Abstract: A methods and apparatus for coding and decoding a MATRIX. The coding method includes: dividing a MATRIX into layers according to a preset quantity of layers, and grouping MATRIX elements into different layers; performing, according to a determined to-be-coded layer number 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 to-be-coded layer number, 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 to-be-coded layer number, writing no coded data of the layer into the bit stream; and coding the to-be-coded layer number and writing the coded layer number of the coded layer into the bit stream.

公开(公告)号：US20170195692A1

公开(公告)日：2017-07-06

申请号：US15466666

申请日：2017-03-22

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

Inventor： Quanhe YU ,  Xiaozhen ZHENG ,  Jianhua ZHENG ,  Yun HE

IPC: H04N19/91 ,  H04N19/50 ,  H04N19/103 ,  H04N19/61

CPC classification number: H04N19/91 ,  H03M7/3075 ,  H03M7/4012 ,  H04N19/103 ,  H04N19/50 ,  H04N19/61

Abstract: The present application discloses video data encoding and decoding methods and apparatuses, so as to conveniently perform data encoding and decoding on video data. The method includes: arithmetic encoding, where the arithmetic encoding includes: obtaining a binary symbol of image data; and if the binary symbol is a most probable symbol MPS, updating a first encoding interval corresponding to the MPS in a logarithm domain, and if the first updated encoding interval is less than a preset range of an arithmetic encoding interval, performing normalization processing on the first encoding interval in the logarithm domain; or if the binary symbol is a least probable symbol LPS, updating a second encoding interval corresponding to the LPS in an original number domain, and performing normalization processing on the second encoding interval in the original number domain.

公开(公告)号：US20170104998A1

公开(公告)日：2017-04-13

申请号：US15387305

申请日：2016-12-21

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

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

IPC: H04N19/126 ,  H04N19/184 ,  H04N19/91 ,  H04N19/167

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.

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：US20210014492A1

公开(公告)日：2021-01-14

申请号：US17037192

申请日：2020-09-29

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

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

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/167 ,  H04N19/119 ,  H04N19/70

Abstract: The present disclosure provide a transform method in picture block encoding, an inverse transform method in picture block decoding, and an apparatus. The inverse transform method includes: determining, in a target transform set, a corresponding transform pair of each region of at least two regions that constitute a to-be-decoded current block; inverse transforming each region based on the corresponding transform pair of each region to obtain an inverse transform result of each region; and obtaining an inverse transform result of the current block based on the inverse transform result of each region and a position of each region in the current block, where the at least two regions do not overlap each other, the target transform set includes a correspondence between a transform pair and a position of a region in the current block, and the transform pair includes a horizontal transform core and a vertical transform core.

公开(公告)号：US20200344478A1

公开(公告)日：2020-10-29

申请号：US16928632

申请日：2020-07-14

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

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

IPC: H04N19/126 ,  H04N19/593 ,  H04N19/463 ,  H04N19/91 ,  H04N19/132 ,  H04N19/167 ,  H04N19/93 ,  H04N19/184

Abstract: Methods and apparatus for coding and decoding a MATRIX. A coding method includes: dividing a MATRIX into layers according to a preset quantity of layers, and grouping MATRIX elements into different layers; performing, according to a determined to-be-coded layer number 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 to-be-coded layer number, 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 to-be-coded layer number, writing no coded data of the layer into the bit stream; and coding the to-be-coded layer number and writing the coded layer number of the coded layer into the bit stream.