公开(公告)号：US10218985B2

公开(公告)日：2019-02-26

申请号：US15389196

申请日：2016-12-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Xiaozhen Zheng

IPC: H04N19/159 ,  H04N19/46 ,  H04N19/147 ,  H04N19/597 ,  H04N19/176 ,  H04N19/96 ,  H04N19/172 ,  H04N19/182 ,  H04N19/184

Abstract: The present invention discloses an intra-frame depth map block encoding method, including: acquiring a depth map block to be encoded; when a depth modeling mode (DMM) is applied to a recursive quadtree (RQT) or simplified depth coding (SDC) to encode the depth map block, separately detecting the depth map block by using a DMM1 mode and a DMM4 mode in the DMM, to obtain rate-distortion results of the depth map block in the DMM1 mode and in the DMM4 mode; and determining that a DMM with a smallest rate-distortion result in the DMM1 and the DMM4 is a DMM used during encoding, applying the used mode to the RQT or the SDC to encode the depth map block, and writing the used DMM to a bitstream.

公开(公告)号：US12301866B2

公开(公告)日：2025-05-13

申请号：US18191367

申请日：2023-03-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Nan Song ,  Xu Chen ,  Xiang Ma ,  Huanbang Chen ,  Yin Zhao

IPC: H04N19/593 ,  G06N3/08 ,  H04N19/11 ,  H04N19/136 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/42

Abstract: An intra prediction method includes obtaining respective intra prediction modes or texture distributions of P reconstructed picture blocks in a surrounding region of a current block; obtaining, based on the respective intra prediction modes or texture distributions of the P reconstructed picture blocks, Q priori candidate intra prediction modes of the current block and Q probability values; obtaining, based on M probability values corresponding to M priori candidate intra prediction modes, M weighting factors corresponding to the M priori candidate intra prediction modes; separately performing intra prediction based on the M priori candidate intra prediction modes to obtain M predicted values; and obtaining a predicted value of the current block based on a weighted summation of the M predicted values and the corresponding M weighting factors.

公开(公告)号：US12155853B2

公开(公告)日：2024-11-26

申请号：US18477167

申请日：2023-09-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

Abstract: A picture decoding method includes determining motion information of a to-be-decoded block; obtaining a first decoding prediction block of the to-be-decoded block based on the motion information; performing motion search with first precision in the prediction reference picture block to obtain at least two second decoding prediction blocks; performing downsampling on the first decoding prediction block and the at least two second decoding prediction blocks to obtain a first sampling pixel array and at least two second sampling pixel arrays, respectively; calculating a difference between the first sampling pixel array and each of the second sampling pixel arrays, and using, as a target prediction motion vector, a motion vector corresponding to a second sampling pixel array with a minimum difference; and obtaining a target decoding prediction block of the to-be-decoded block based on the target prediction motion vector, and decoding the to-be-decoded block based on the target decoding prediction block.

公开(公告)号：US11503317B2

公开(公告)日：2022-11-15

申请号：US17334068

申请日：2021-05-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

Abstract: A picture decoding method includes determining motion information of a to-be-decoded block, obtaining a first decoding prediction block of the to-be-decoded block based on the motion information, performing motion search with first precision in the prediction reference picture block to obtain at least two second decoding prediction blocks, performing downsampling on the first decoding prediction block and the at least two second decoding prediction blocks to obtain a first sampling pixel array and at least two second sampling pixel arrays, respectively, calculating a difference between the first sampling pixel array and each of the second sampling pixel arrays, setting, as a target prediction motion vector, a motion vector corresponding to a second sampling pixel array with a minimum difference, obtaining a target decoding prediction block of the to-be-decoded block based on the target prediction motion vector, and decoding the to-be-decoded block based on the target decoding prediction block.

公开(公告)号：US20220141482A1

公开(公告)日：2022-05-05

申请号：US17576261

申请日：2022-01-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/567

Abstract: A motion vector determining method includes a first matched distortion value between a forward prediction block and a backward prediction block of a current block is calculated. A matched distortion value between a first prediction block and a fifth prediction block, a matched distortion value between a second prediction block and a sixth prediction block, a matched distortion value between a third prediction block and a seventh prediction block, and a matched distortion value between a fourth prediction block and an eighth prediction block are calculated. A target forward prediction block and a target backward prediction block are determined based on a value relationship between the matched distortion values. A target motion vector of the current block is determined based on the target forward prediction block and the target backward prediction block.

公开(公告)号：US11259042B2

公开(公告)日：2022-02-22

申请号：US17206767

申请日：2021-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/567

Abstract: A motion vector determining method includes a first matched distortion value between a forward prediction block and a backward prediction block of a current block is calculated. A matched distortion value between a first prediction block and a fifth prediction block, a matched distortion value between a second prediction block and a sixth prediction block, a matched distortion value between a third prediction block and a seventh prediction block, and a matched distortion value between a fourth prediction block and an eighth prediction block are calculated. A target forward prediction block and a target backward prediction block are determined based on a value relationship between the matched distortion values. A target motion vector of the current block is determined based on the target forward prediction block and the target backward prediction block.

公开(公告)号：US20210289220A1

公开(公告)日：2021-09-16

申请号：US17334068

申请日：2021-05-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/44 ,  H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

Abstract: A picture decoding method includes determining motion information of a to-be-decoded block, obtaining a first decoding prediction block of the to-be-decoded block based on the motion information, performing motion search with first precision in the prediction reference picture block to obtain at least two second decoding prediction blocks, performing downsampling on the first decoding prediction block and the at least two second decoding prediction blocks to obtain a first sampling pixel array and at least two second sampling pixel arrays, respectively, calculating a difference between the first sampling pixel array and each of the second sampling pixel arrays, setting, as a target prediction motion vector, a motion vector corresponding to a second sampling pixel array with a minimum difference, obtaining a target decoding prediction block of the to-be-decoded block based on the target prediction motion vector, and decoding the to-be-decoded block based on the target decoding prediction block.

公开(公告)号：US20210211712A1

公开(公告)日：2021-07-08

申请号：US17206767

申请日：2021-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/567

Abstract: A motion vector determining method includes a first matched distortion value between a forward prediction block and a backward prediction block of a current block is calculated. A matched distortion value between a first prediction block and a fifth prediction block, a matched distortion value between a second prediction block and a sixth prediction block, a matched distortion value between a third prediction block and a seventh prediction block, and a matched distortion value between a fourth prediction block and an eighth prediction block are calculated. A target forward prediction block and a target backward prediction block are determined based on a value relationship between the matched distortion values. A target motion vector of the current block is determined based on the target forward prediction block and the target backward prediction block.

公开(公告)号：US20190230363A1

公开(公告)日：2019-07-25

申请号：US16371514

申请日：2019-04-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jicheng An ,  Xu Chen ,  Jianhua Zheng

IPC: H04N19/139 ,  H04N19/513 ,  H04N19/176 ,  H04N19/105

Abstract: A video decoding method includes obtaining an index of predicted motion information of a current image block in a candidate predicted motion information list, where the predicted motion information includes reference image information and a motion vector prediction value, and candidate predicted motion information in the candidate predicted motion information list is motion information of an adjacent block of the current image block in time domain or space domain, querying the candidate predicted motion information list based on the index, and using the found candidate predicted motion information as the predicted motion information, determining a correspondence between a motion vector difference and a motion vector prediction value based on the predicted motion information, and obtaining the motion vector difference from the bitstream, and adding the motion vector prediction value and the corresponding motion vector difference based on the correspondence to obtain a motion vector of the current image block.

公开(公告)号：US20170105008A1

公开(公告)日：2017-04-13

申请号：US15389196

申请日：2016-12-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Xiaozhen Zheng

IPC: H04N19/159 ,  H04N19/46 ,  H04N19/147

CPC classification number: H04N19/159 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/46 ,  H04N19/597 ,  H04N19/96

Abstract: The present invention discloses an intra-frame depth map block encoding method, including: acquiring a depth map block to be encoded; when a depth modeling mode (DMM) is applied to a recursive quadtree (RQT) or simplified depth coding (SDC) to encode the depth map block, separately detecting the depth map block by using a DMM1 mode and a DMM4 mode in the DMM, to obtain rate-distortion results of the depth map block in the DMM1 mode and in the DMM4 mode; and determining that a DMM with a smallest rate-distortion result in the DMM1 and the DMM4 is a DMM used during encoding, applying the used mode to the RQT or the SDC to encode the depth map block, and writing the used DMM to a bitstream.