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：US20190158852A1

公开(公告)日：2019-05-23

申请号：US16261097

申请日：2019-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu CHEN ,  Xiaozhen ZHENG

IPC: H04N19/159 ,  H04N19/96 ,  H04N19/147 ,  H04N19/176 ,  H04N19/597 ,  H04N19/46

Abstract: The present invention discloses an intra-frame depth map block decoding method, including: acquiring, from a bitstream, a depth modeling mode (DMM) used for a depth map block, wherein the DMM is applied to a recursive quadtree (RQT) coding or simplified depth coding (SDC); obtaining a block predicted value of a depth map subblock obtained through segmentation in the DMM according to the DMM; acquiring, from the bitstream, a block offset value of the depth map subblock, and residual information of each pixel in the depth map subblock; and obtaining a reconstruction value of each pixel in the depth map subblock according to the block predicted value, the block offset value and the residual information of each pixel in the depth map subblock.

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：US20180302649A1

公开(公告)日：2018-10-18

申请号：US16012446

申请日：2018-06-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaozhen ZHENG

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/593 ,  H04N19/59 ,  H04N19/103 ,  H04N19/176 ,  H04N19/159

Abstract: Embodiments of the present invention provide methods and apparatuses for coding and decoding a depth map. The coding method includes: obtaining prediction data corresponding to a current image block of the depth map, obtaining a predicted pixel value from the prediction data according to a preset step, and calculating a first average value of the prediction data according to the predicted pixel value, where the preset step is a positive integer except 1; obtaining a residual of the current image block according to the first average value of the prediction data and a pixel value of a pixel of the current image block; and coding the residual of the current image block. In this way, coding and decoding efficiency can be improved.

公开(公告)号：US20150319459A1

公开(公告)日：2015-11-05

申请号：US14795677

申请日：2015-07-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaozhen ZHENG

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/159 ,  H04N19/182

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.

Abstract translation: 本发明的实施例提供了对深度图进行编码和解码的方法和装置，其中编码方法包括：获取深度图的当前图像块的帧内预测模式; 确定帧内预测模式是否属于预设的帧内预测模式集合; 如果是，则使用预设的帧内预测方法对当前图像块执行编码处理，以便获取当前图像块的残差。 预设的帧内预测方法包括：第一帧内预测方法; 并且在当前图像块的平均像素值和当前图像块的预测数据的平均像素值之间执行差异运算，以获得当前图像块的残差。

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.

公开(公告)号：US20180199060A1

公开(公告)日：2018-07-12

申请号：US15916670

申请日：2018-03-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaozhen ZHENG

IPC: H04N19/583 ,  H04N19/91 ,  H04N19/463 ,  H04N19/119 ,  H04N19/196 ,  H04N19/176 ,  H04N19/593

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：US20170142414A1

公开(公告)日：2017-05-18

申请号：US15418496

申请日：2017-01-27

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

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

IPC: H04N19/126 ,  H04N19/46 ,  H04N19/70

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.

公开(公告)号：US20150312592A1

公开(公告)日：2015-10-29

申请号：US14795746

申请日：2015-07-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaozhen ZHENG

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/105 ,  H04N19/139

CPC classification number: H04N19/597 ,  H04N19/103 ,  H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/59 ,  H04N19/593

Abstract: Embodiments of the present invention provide methods and apparatuses for coding and decoding a depth map. The coding method includes: obtaining prediction data corresponding to a current image block of the depth map, obtaining a predicted pixel value from the prediction data according to a preset step, and calculating a first average value of the prediction data according to the predicted pixel value, where the preset step is a positive integer except 1; obtaining a residual of the current image block according to the first average value of the prediction data and a pixel value of a pixel of the current image block; and coding the residual of the current image block. In this way, coding and decoding efficiency can be improved.

Abstract translation: 本发明的实施例提供了用于对深度图进行编码和解码的方法和装置。 编码方法包括：获得与深度图的当前图像块相对应的预测数据，根据预设步骤从预测数据获得预测像素值，并根据预测像素值计算预测数据的第一平均值 ，其中预设步长是除1之外的正整数; 根据预测数据的第一平均值和当前图像块的像素的像素值获得当前图像块的残差; 并对当前图像块的残差进行编码。 以这种方式，可以提高编码和解码效率。