公开(公告)号：US20200252645A1

公开(公告)日：2020-08-06

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: 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：US20190327483A1

公开(公告)日：2019-10-24

申请号：US16460029

申请日：2019-07-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Fan LIANG

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/54

Abstract: A picture prediction method includes: determining a reference block of a current block; obtaining location information and motion information of at least two feature points in the reference block; calculating motion information of each subblock in the current block based on the location information and the motion information of the at least two feature points in the reference block; and performing motion compensation prediction on each subblock in the current block based on the motion information of each subblock in the current block, to obtain a prediction block of the current block.

公开(公告)号：US20190268616A1

公开(公告)日：2019-08-29

申请号：US16413329

申请日：2019-05-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Fan LIANG ,  Haitao YANG

IPC: H04N19/513 ,  H04N19/119 ,  H04N19/537

Abstract: A picture prediction method includes: determining two pixel samples in a current picture block, and determining a candidate motion information unit set corresponding to each of the two pixel samples; determining a merged motion information unit set i including two motion information units; and predicting a pixel value of the current picture block by using an affine motion model and the merged motion information unit set i.

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.

公开(公告)号：US20220286703A1

公开(公告)日：2022-09-08

申请号：US17827361

申请日：2022-05-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/577 ,  H04N19/70

Abstract: Embodiments of this application relate to the field of video picture coding technologies, and disclose a bidirectional inter prediction method and apparatus, to improve coding efficiency. The method includes: obtaining a first motion vector difference of a current picture block; determining a second motion vector difference of the current picture block based on the first motion vector difference, where the first motion vector difference belongs to motion information of the current picture block in a first direction, and the second motion vector difference belongs to motion information of the current picture block in a second direction; and determining prediction samples of the current picture block based on the obtained first motion vector difference and the determined second motion vector difference.

公开(公告)号：US20220248044A1

公开(公告)日：2022-08-04

申请号：US17716410

申请日：2022-04-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY

IPC: H04N19/503 ,  H04N19/174 ,  H04N19/109 ,  H04N19/176 ,  H04N19/186 ,  H04N19/136 ,  H04N19/105

Abstract: The present disclosure relates to moving picture processing, and in particular to cases where non-rectangular partitioning modes are used for the inter-prediction in a combination with weighted prediction (WP) for coding fades. Non-rectangular modes refer to those inter-prediction modes, in which case a current block is partitioned/sliced in a non-rectangular way (slices). Such modes may be triangular (TMP) or geometric (GEO) prediction. The aim of the invention is to harmonize non-rectangular partitioning modes with WP by way of disabling TMP/GEO when WP is applied. This may be accomplished by checking whether all reference pictures for a current slice are disabled, and if this is the case to disable the slice-level WP for non-rectangular prediction units. Whether the reference pictures are disabled may be determined based on conditions applied on set values, for example, of luma/chroma flags, which refer to the reference pictures.

公开(公告)号：US20220116647A1

公开(公告)日：2022-04-14

申请号：US17556579

申请日：2021-12-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin LIN ,  Ruopu HUANG ,  Haitao YANG

IPC: H04N19/52 ,  H04N19/537 ,  H04N19/513 ,  H04N19/523 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56

Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.

公开(公告)号：US20220094947A1

公开(公告)日：2022-03-24

申请号：US17541467

申请日：2021-12-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang MA ,  Haitao YANG ,  Yin ZHAO ,  Lian ZHANG

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/103 ,  H04N19/186 ,  H04N19/70

Abstract: This application discloses a method for constructing an MPM list, a method for obtaining an intra prediction mode of a chroma block, and an apparatus. In a specific implementation, a MIP mode is used for a current block, and the method for constructing an MPM list includes: obtaining intra prediction mode information of a neighboring block; determining, based on the intra prediction mode information of the neighboring block, whether an intra prediction mode of the neighboring block is the MIP mode; and skipping using the intra prediction mode of the neighboring block for MPM list construction of the current block if the intra prediction mode of the neighboring block is not the MIP mode; or using the intra prediction mode of the neighboring block for MPM list construction of the current block if the intra prediction mode of the neighboring block is the MIP mode.