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：US12052443B2

公开(公告)日：2024-07-30

申请号：US18063955

申请日：2022-12-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu Chen ,  Haitao Yang

IPC: H04N19/82 ,  H04N19/176 ,  H04N19/186 ,  H04N19/88

CPC classification number: H04N19/82 ,  H04N19/176 ,  H04N19/186 ,  H04N19/88

Abstract: A loop filtering method and apparatus are provided. The method includes: obtaining a first pixel matrix, where a value of a pixel at a corresponding location in the first pixel matrix corresponds to a luminance value of a pixel at a corresponding location in a first picture block; obtaining a second pixel matrix, where a pixel at a corresponding location in the second pixel matrix corresponds to a quantization step value corresponding to the luminance value of the pixel at the corresponding location in the first picture block; performing filtering processing on an input pixel matrix by using a filtering network to obtain an output pixel matrix, where the filtering network is a neural network that has a filtering function and is obtained through training, the output pixel matrix includes a third pixel matrix. Thus, filtering effect can be improved for reconstructed pictures of various quality levels.

公开(公告)号：US11985321B2

公开(公告)日：2024-05-14

申请号：US17561070

申请日：2021-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Haitao Yang ,  Lian Zhang

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video encoder, a video decoder, and a corresponding method, where the method includes, when a plurality of preset conditions are satisfied, performing bi-directional optical flow (BDOF) processing on a current picture block to obtain a predicted sample value of the current picture block, where the plurality of preset conditions include at least a condition that a height (H) of the current picture block is greater than or equal to 8, a width (W) of the current picture block is greater than or equal to 8, and a product of W and H is greater than 128. Thus encoding/decoding complexity and prediction accuracy can be balanced to some extent.

公开(公告)号：US11956444B2

公开(公告)日：2024-04-09

申请号：US17360786

申请日：2021-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: An inter prediction method and apparatus, and a corresponding encoder and decoder are disclosed. The method includes: obtaining an index value of a length of a motion vector difference of the current picture block; determining target length information from a set of candidate length information based on the index value of the length; obtaining the motion vector difference of the current picture block based on the target length information; determining the motion vector target value of the current picture block based on the motion vector difference of the current picture block and the motion vector predictor of the current picture block; and obtaining a prediction block of the current picture block based on the motion vector target value of the current picture block.

公开(公告)号：US20240095990A1

公开(公告)日：2024-03-21

申请号：US18521562

申请日：2023-11-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Min Wang ,  Shuai Zhou ,  Xu Chen ,  Bing Xie

IPC: G06T13/80 ,  G06F9/451

CPC classification number: G06T13/80 ,  G06F9/451

Abstract: A display method and an electronic device provide icon animation and starting window image decoding that can be performed in parallel. After a launch operation is detected, an application launch animation may start to be displayed, thus reducing waiting latency and improving user experience.

公开(公告)号：US11818379B2

公开(公告)日：2023-11-14

申请号：US17964166

申请日：2022-10-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

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

CPC classification number: 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：US20230276055A1

公开(公告)日：2023-08-31

申请号：US18154961

申请日：2023-01-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jicheng An ,  Xu Chen ,  Jianhua Zheng

IPC: H04N19/139 ,  H04N19/463 ,  H04N19/52 ,  H04N19/577 ,  H04N19/573 ,  H04N19/105 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/139 ,  H04N19/463 ,  H04N19/52 ,  H04N19/577 ,  H04N19/573 ,  H04N19/105 ,  H04N19/176 ,  H04N19/521

Abstract: An inter prediction method includes obtaining predicted motion information of a current image block, where the predicted motion information is used to obtain one or more motion vectors of the current image block, and the motion vectors include a forward MV and a backward MV for a bidirectional inter prediction. The disclosed method further includes determining a motion vector difference for the current image block, and calculating the motion vectors based on the predicted motion information and the motion vector difference, where the motion vector difference is shared by the forward MV and the backward MV.

公开(公告)号：US11425372B2

公开(公告)日：2022-08-23

申请号：US17339746

申请日：2021-06-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Jianhua Zheng

IPC: H04N19/109 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: This application provides a video picture decoding and encoding method and a video picture decoding and encoding apparatus. When it is determined that a merge or skip mode is used, if it is determined through decoding that an MMVD indicator is true, a triangle PU indicator may not be coded. The triangle PU indicator is coded only when it is determined through decoding that the MMVD indicator is false. This reduces a quantity of used coding resources, and can reduce bit overheads of a bitstream.