公开(公告)号：US20230010907A1

公开(公告)日：2023-01-12

申请号：US17872240

申请日：2022-07-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Na ZHANG ,  Jicheng AN ,  Quanhe YU ,  Jianhua ZHENG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/30 ,  H04N19/176

Abstract: An inter prediction method is provided, including: obtaining a first reference frame index and a first motion vector of a to-be-processed block (101); deriving a second reference frame index from the first reference frame index, where the second reference frame index is different from the first reference frame index (102); scaling the first motion vector to obtain a second motion vector (103); obtaining a first reference block of the to-be-processed block according to the first reference frame index and the first motion vector (104); obtaining a second reference block of the to-be-processed block according to the second reference frame index and the second motion vector (105); and weighting the first reference block and the second reference block to obtain a combined prediction block (106). Each reference list for inter prediction is allowed to include two groups of motion information, which helps improve an inter prediction effect.

公开(公告)号：US20210067796A1

公开(公告)日：2021-03-04

申请号：US16949793

申请日：2020-11-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu CHEN ,  Jicheng AN ,  Jianhua ZHENG

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

Abstract: Embodiments of this application disclose a method for obtaining a motion vector, including: determining a reference block of a to-be-processed block, wherein the reference block and the to-be-processed block have a preset temporal or spatial correlation, the reference block is obtained based on a prediction block of the reference block determined by a refined initial motion vector, the refined initial motion vector is obtained based on an initial motion vector and one or more preset motion vector offsets, and the initial motion vector is obtained based on a predicted motion vector of the reference block; and using the initial motion vector as a predicted motion vector of the to-be-processed block.

公开(公告)号：US20230379490A1

公开(公告)日：2023-11-23

申请号：US18358700

申请日：2023-07-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu CHEN ,  Jicheng AN ,  Jianhua ZHENG

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

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/176

Abstract: Embodiments of this application disclose a method for obtaining a motion vector, including: determining a reference block of a to-be-processed block, wherein the reference block and the to-be-processed block have a preset spatial correlation, the reference block is obtained based on a prediction block of the reference block determined by a refined initial motion vector, the refined initial motion vector is obtained based on an initial motion vector and one or more preset motion vector offsets, and the initial motion vector is obtained based on a predicted motion vector of the reference block; and using the initial motion vector as a predicted motion vector of the to-be-processed block.

公开(公告)号：US20210076036A1

公开(公告)日：2021-03-11

申请号：US17099470

申请日：2020-11-16

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Quanhe YU ,  Jicheng AN ,  Jianhua ZHENG ,  Yongbing LIN ,  Liqiang WANG ,  Benben NIU ,  Ziwei WEI ,  Yun HE

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/46 ,  H04N19/176

Abstract: Embodiments of this application relate to the video coding and compression field, and disclose an encoding method and apparatus, and a decoding method and apparatus, to resolve a problem that an existing split mode cannot satisfy a relatively complex texture requirement. The decoding method specifically includes: parsing a bitstream to determine a basic split mode for a current to-be-decoded picture block and a target derivation mode for a subpicture block of the current to-be-decoded picture block; splitting the current to-be-decoded picture block into N subpicture blocks in the basic split mode, where N is an integer greater than or equal to 2; deriving one derived picture block from at least two adjacent subpicture blocks in the N subpicture blocks in the target derivation mode; and decoding the derived picture block.

公开(公告)号：US20190387254A1

公开(公告)日：2019-12-19

申请号：US16457041

申请日：2019-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jicheng AN ,  Jianhua ZHENG

IPC: H04N19/86 ,  H04N19/119 ,  H04N19/186 ,  H04N19/176

Abstract: An image filtering method and apparatus are disclosed. The method includes: obtaining a first index of the luma blocks, wherein the first index represents a filter type applicable to the luma blocks; obtaining a second index of the first chroma blocks, wherein the second index represents a filter type applicable to the first chroma blocks; filtering the luma blocks by applying a first filter in a filter set, the first filter corresponding to the first index; and filtering the first chroma blocks by applying a second filter in the filter set, the second filer corresponding to the second index.