公开(公告)号：US11695968B2

公开(公告)日：2023-07-04

申请号：US17646707

申请日：2021-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Liu

IPC: H04N19/96 ,  H04N19/172 ,  H04N19/184

CPC classification number: H04N19/96 ,  H04N19/172 ,  H04N19/184

Abstract: Embodiments of this application disclose a decoding method includes: obtaining a bitstream including picture data; parsing the bitstream to obtain node split mode information of a first-level coding tree and node split mode information of a second-level coding tree, if the split mode corresponding to the first node is no further splitting, parsing the bitstream to obtain encoding information of the first node; and decoding and reconstructing, based on the encoding information of the first node, a coding unit corresponding to the first node, to obtain a picture corresponding to the picture data.

公开(公告)号：US11310524B2

公开(公告)日：2022-04-19

申请号：US16858222

申请日：2020-04-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Shan Gao ,  Jiantong Zhou ,  Shan Liu

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/52 ,  H04N19/61 ,  H04N19/82

Abstract: A method includes obtaining a first motion vector of a motion compensation unit included in an affine code block. The method also includes determining a second motion vector based on the first motion vector, where a precision of the second motion vector matches a motion vector precision of a storage unit corresponding to the motion compensation unit. The method further includes determining a third motion vector based on the second motion vector, where there is a preset correspondence between the third motion vector and the second motion vector, and the third motion vector is used for subsequent encoding/decoding processing.

公开(公告)号：US11223847B2

公开(公告)日：2022-01-11

申请号：US16712698

申请日：2019-12-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Liu ,  Wei Wang

IPC: H04N19/56 ,  H04N19/176 ,  H04N19/52 ,  H04N19/523

Abstract: A decoder including a receiver and a processor configured to receive an encoded bitstream containing a motion vector (MV) candidate index for a current block. The processor is coupled to the receiver, and configured to obtain precisions of candidate motion vectors (MVs) corresponding to neighboring blocks of the current block, perform first rounding of the precisions based on a rounding scheme, perform second rounding of the candidate MVs based on the first rounding, perform pruning of the candidate MVs, generate a candidate list based on the second rounding and the pruning, and select one of the candidate MVs from the candidate list for decoding the current block based on the MV candidate index.

公开(公告)号：US20200162749A1

公开(公告)日：2020-05-21

申请号：US16752259

申请日：2020-01-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang ,  Shan Liu

IPC: H04N19/176 ,  H04N19/126 ,  H04N19/159 ,  H04N19/196 ,  H04N19/132

Abstract: An image processing method and device include parsing a code stream to obtain a first quantization parameter of a current image area in an original resolution coding scheme, a second quantization parameter of the current image area in a downsampling coding scheme, a coding scheme of a current image block in the current image area, a quantization coefficient of the current image block, and a prediction signal of the current image block, determining a quantization parameter of the current image block according to the coding scheme, and reconstructing the current image block based on the quantization parameter, the quantization coefficient, and the prediction signal to obtain a current reconstructed image block.

公开(公告)号：US12069317B2

公开(公告)日：2024-08-20

申请号：US18200141

申请日：2023-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Liu

IPC: H04N19/96 ,  H04N19/172 ,  H04N19/184

CPC classification number: H04N19/96 ,  H04N19/172 ,  H04N19/184

Abstract: Embodiments of this application disclose a decoding method includes: obtaining a bitstream including picture data; parsing the bitstream to obtain node split mode information of a first-level coding tree and node split mode information of a second-level coding tree, if the split mode corresponding to the first node is no further splitting, parsing the bitstream to obtain encoding information of the first node; and decoding and reconstructing, based on the encoding information of the first node, a coding unit corresponding to the first node, to obtain a picture corresponding to the picture data.

公开(公告)号：US11272220B2

公开(公告)日：2022-03-08

申请号：US16734018

申请日：2020-01-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han Gao ,  Zhijie Zhao ,  Semih Esenlik ,  Anand Meher Kotra ,  Shan Liu

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50

Abstract: Embodiments provide an apparatus and method of partitioning of an image or an image slice. In particular, on an image processing apparatus, the image or image slice is split into an integer number of coding tree units in both vertical and horizontal directions. Boundary coding tree units are then at least partially forced-split so that at least one resulting coding unit is a result of binary-tree partitioning, i.e., includes a coding unit which is longer on one side than on the other side. The longer side is parallel or concurrent to the image or image slice boundary. Recursively partitioning coding units that span the picture boundary without the requirement for signaling partition information in a bitstream can be achieved.

公开(公告)号：US10834430B2

公开(公告)日：2020-11-10

申请号：US16728287

申请日：2019-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Liu

IPC: H04N19/96 ,  H04N19/172 ,  H04N19/184

Abstract: Embodiments of this application disclose a decoding method includes: obtaining a bitstream including picture data; parsing the bitstream to obtain node split mode information of a first-level coding tree and node split mode information of a second-level coding tree, if the split mode corresponding to the first node is no further splitting, parsing the bitstream to obtain encoding information of the first node; and decoding and reconstructing, based on the encoding information of the first node, a coding unit corresponding to the first node, to obtain a picture corresponding to the picture data.

公开(公告)号：US20200244976A1

公开(公告)日：2020-07-30

申请号：US16848555

申请日：2020-04-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Liu

IPC: H04N19/196 ,  H04N19/61 ,  H04N19/119 ,  H04N19/70 ,  H04N19/176

Abstract: A video decoding device receives a bitstream including a prediction block and a residual block with coefficients transformed by a Spatial Varying Transform (SVT). The video decoding device determines a type of SVT employed to transform the coefficients in the residual block and determines a position of the SVT relative to the residual block by determining a candidate position step size and a position index for the SVT. The video decoding device applies an inverse transform to the coefficients based on the SVT type and position to create a reconstructed residual block. The video decoding device applies the reconstructed residual block to the prediction block to reconstruct a video block and reconstructs a video sequence for display, the video sequence including a video frame that includes the reconstructed video block.

公开(公告)号：US20200154118A1

公开(公告)日：2020-05-14

申请号：US16744987

申请日：2020-01-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Hong Zhang ,  Shan Liu

IPC: H04N19/30 ,  H04N19/117 ,  H04N19/186 ,  H04N19/176

Abstract: A chroma prediction method includes: obtaining luma information and chroma information of a to-be-processed image block, first processing information, and second processing information, where the first processing information indicates a downsampling processing manner used for a luma component of the to-be-processed image block, and the second processing information indicates a downsampling processing manner used for a chroma component of the to-be-processed image block; reconstructing a transient luma block of the to-be-processed image block based on the luma information of the to-be-processed image block, where a resolution of the transient luma block is determined by using a sampling format of the to-be-processed image block and the first processing information; and obtaining a prediction block of a transient chroma block of the to-be-processed image block based on the resolution of the transient luma block, the sampling format of the to-be-processed image block, and the second processing information.

公开(公告)号：US12192494B2

公开(公告)日：2025-01-07

申请号：US17303886

申请日：2021-06-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Hong Zhang ,  Shan Liu

IPC: H04N19/30 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186

Abstract: A prediction method includes: performing downsampling on a luma component of a to-be-processed image block to obtain an initial signal of the luma component; obtaining a residual signal of the luma component based on the obtained initial signal of the luma component; obtaining a residual signal of a chroma component of the to-be-processed image block based on the chroma component of the to-be-processed image block without downsampling. The method further includes: respectively performing a transform on the residual signal of the luma component and the residual signal of the chroma component, to obtain transform coefficients, performing quantization on the obtained transform coefficients, to obtain quantization coefficients, and performing entropy encoding on the obtained quantization coefficients to obtain a bitstream.