公开(公告)号：US20210014526A1

公开(公告)日：2021-01-14

申请号：US17037570

申请日：2020-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/513 ,  H04N19/52

Abstract: A method and an apparatus are provided for obtaining a motion vector, and disclose application of the method and the apparatus for obtaining a motion vector in a video coding method and apparatus. The method includes: obtaining a first motion vector from a first motion vector set corresponding to a to-be-processed picture block; obtaining a second motion vector through calculation based on the first motion vector, where there is a preset vector difference between the first motion vector and the second motion vector, and the first motion vector and the second motion vector are different; adding the second motion vector to the first motion vector set to constitute a second motion vector set; and obtaining a target motion vector from the second motion vector set.

公开(公告)号：US10397612B2

公开(公告)日：2019-08-27

申请号：US16113531

申请日：2018-08-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Xiaozhen Zheng ,  Yongbing Lin

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/105 ,  H04N19/70 ,  H04N19/593 ,  H04N19/182

Abstract: A three-dimensional (3D) video encoding method, decoding method, and related apparatus is disclosed. The decoding method may include decoding a video bitstream to obtain a single sample flag bit corresponding to a current image block in a current depth map, performing detection on a first adjacent prediction sampling point and a second adjacent prediction sampling point of the current image block in the current depth map if the single sample flag bit obtained by decoding indicates that a decoding mode corresponding to the current image block is a single depth intra-frame mode (SDM), and constructing a sample candidate set according to results of the detection on the first adjacent prediction sampling point and the second adjacent prediction sampling point, where the sample candidate set includes a first index location and a second index location, decoding the video bitstream to obtain a single sample index flag bit corresponding to the current image block.

公开(公告)号：US20170078701A1

公开(公告)日：2017-03-16

申请号：US15362448

申请日：2016-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Xiaozhen Zheng ,  Yongbing Lin

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/44 ,  H04N19/593 ,  H04N19/70

Abstract: A three-dimensional video encoding method, decoding method, and related apparatus is disclosed. The decoding method may include decoding a video bitstream to obtain a single sample flag bit corresponding to a current image block in a current depth map, performing detection on a first adjacent prediction sampling point and a second adjacent prediction sampling point of the current image block in the current depth map if the single sample flag bit obtained by decoding indicates that a decoding mode corresponding to the current image block is a single depth intra-frame mode, and constructing a sample candidate set according to results of the detection on the first adjacent prediction sampling point and the second adjacent prediction sampling point, where the sample candidate set includes a first index location and a second index location, decoding the video bitstream to obtain a single sample index flag bit corresponding to the current image block.

Abstract translation: 公开了三维视频编码方法，解码方法和相关装置。 解码方法可以包括解码视频比特流以获得与当前深度图中的当前图像块相对应的单个采样标志位，对当前图像块的第一相邻预测采样点和第二相邻预测采样点执行检测， 如果通过解码获得的单个采样标志位指示与当前图像块相对应的解码模式是单一深度帧内模式，则根据第一相邻预测的检测结果构建样本候选集合， 采样点和第二相邻预测采样点，其中采样候选集合包括第一索引位置和第二索引位置，对视频比特流进行解码以获得与当前图像块对应的单个采样索引标志位。

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.