公开(公告)号：US20230336725A1

公开(公告)日：2023-10-19

申请号：US18337330

申请日：2023-06-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/122 ,  H04N19/119 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

CPC classification number: H04N19/122 ,  H04N19/119 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

Abstract: A video decoding method includes parsing a bitstream to obtain a split mode to transform units (TUs) in a current coding unit (CU). Each of the TUs includes a serial number in a one-to-one correspondence with positions of the TUs in the current CU. A transform coefficient of a luminance transform block of a current TU in the TUs is obtained. A transform type of the luminance transform block of the current TU is obtained based on the split mode and a serial number of the current TU. An inverse transform on the transform coefficient of the luminance transform block of the current TU is performed based on the transform type of the luminance transform block of the current TU to obtain a reconstructed residual of the luminance transform block of the current TU. A reconstructed block of the current CU is obtained based on the reconstructed residual.

公开(公告)号：US20220124377A1

公开(公告)日：2022-04-21

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

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：US20210344899A1

公开(公告)日：2021-11-04

申请号：US17374004

申请日：2021-07-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Yin ZHAO ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/103 ,  H04N19/50 ,  H04N19/96

Abstract: This application discloses a processing method applied to video encoding or video decoding. The method includes: obtaining size information of a current block; determining a context model index ctxInc of a flag of the current block based on the obtained size information of the current block and a size-based constraint; and performing subsequent processing based on the context model index ctxInc of the flag of the current block. The method can be used to improve coding efficiency.

公开(公告)号：US20210337189A1

公开(公告)日：2021-10-28

申请号：US17369703

申请日：2021-07-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin ZHAO ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/107 ,  H04N19/96 ,  H04N19/61 ,  H04N19/70 ,  H04N19/124

Abstract: A prediction mode determining method and apparatus are described. A prediction mode status of a child node of a target node is determined based on an area and a split manner of the target node, where the prediction mode status includes intra prediction mode only and inter prediction mode only. Further, a prediction mode of the child node is determined based on the prediction mode status of the child node. In this way, a same prediction mode is used for all child nodes obtained by splitting the target node. This facilitates pipeline processing of hardware, increases a subsequent processing speed, and improves video coding efficiency.

公开(公告)号：US20210185328A1

公开(公告)日：2021-06-17

申请号：US17249189

申请日：2021-02-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiwei XU ,  Haitao YANG ,  Yin ZHAO

IPC: H04N19/159 ,  H04N19/184 ,  H04N19/176

Abstract: Inter prediction method and apparatus are disclosed to resolve problems in the conventional technology that prediction samples obtained in an inter prediction mode are spatially discontinuous, prediction efficiency is affected, and prediction residual energy is relatively high. The method includes: parsing a bitstream to obtain motion information of a to-be-processed picture block; performing motion compensation on the to-be-processed picture block based on the obtained motion information, to obtain a prediction block of the to-be-processed picture block, where the prediction block of the to-be-processed picture block includes a prediction value of a target sample; and performing weighting calculation on one or more reconstructed values of one or more reference samples and the prediction value of the target sample, to update the prediction value of the target sample, where the reference sample(s) have a preset spatial position relationship with the target sample.

公开(公告)号：US20210044837A1

公开(公告)日：2021-02-11

申请号：US16949362

申请日：2020-10-27

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：US20180014012A1

公开(公告)日：2018-01-11

申请号：US15711555

申请日：2017-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lu YU ,  Xuguang ZUO ,  Yin ZHAO ,  Haitao YANG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/184 ,  H04N19/87 ,  G06K9/00 ,  G06K9/46 ,  H04N19/23

CPC classification number: H04N19/105 ,  G06K9/00744 ,  G06K9/4671 ,  H04N19/142 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/23 ,  H04N19/503 ,  H04N19/58 ,  H04N19/87

Abstract: A picture encoding/decoding method and a related apparatus are provided. The picture decoding method includes obtaining a current picture; selecting, from a knowledge base, K reference pictures of the current picture, where at least one picture in the knowledge base does not belong to a random access segment in which the current picture is located and wherein K is an integer greater than or equal to 1; and decoding the current picture according to the K reference pictures.

公开(公告)号：US20250106405A1

公开(公告)日：2025-03-27

申请号：US18975891

申请日：2024-12-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weiwei XU ,  Haitao YANG ,  Yin ZHAO

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/184

Abstract: Inter prediction method and apparatus are disclosed to resolve problems in the conventional technology that prediction samples obtained in an inter prediction mode are spatially discontinuous, prediction efficiency is affected, and prediction residual energy is relatively high. The method includes: parsing a bitstream to obtain motion information of a to-be-processed picture block; performing motion compensation on the to-be-processed picture block based on the obtained motion information, to obtain a prediction block of the to-be-processed picture block, where the prediction block of the to-be-processed picture block includes a prediction value of a target sample; and performing weighting calculation on one or more reconstructed values of one or more reference samples and the prediction value of the target sample, to update the prediction value of the target sample, where the reference sample(s) have a preset spatial position relationship with the target sample.

公开(公告)号：US20230370647A1

公开(公告)日：2023-11-16

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：US20230291902A1

公开(公告)日：2023-09-14

申请号：US18195007

申请日：2023-05-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Roman Igorevich CHERNYAK ,  Alexander Alexandrovich KARABUTOV ,  Sergey Yurievich IKONIN ,  Timofey Mikhailovich SOLOVYEV ,  Haitao YANG ,  Jianle CHEN ,  Yin ZHAO

IPC: H04N19/124 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

CPC classification number: H04N19/124 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

Abstract: A method for inverse quantization of a current block of a picture is provided. The method is performed by a decoder, and the picture comprises a luminance component and a chrominance component, where the luminance component and the chrominance component are partitioned into multiple blocks. The method includes obtaining one or more existing quantization parameter (QP) values from a received bitstream, wherein the one or more existing QP values are associated with a current block in the chrominance component; determining a QP value for the current block in the chrominance component based on the one or more existing QP values; performing inverse quantization on the current block in the chrominance component using the determined QP value.