公开(公告)号：US20240171765A1

公开(公告)日：2024-05-23

申请号：US18416294

申请日：2024-01-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Jianle CHEN

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

CPC classification number: 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 indication information, where the indication information is used to indicate that second motion information is determined based on first motion information, the first motion information is motion information of a current picture block in a first direction, and the second motion information is motion information of the current picture block in a second direction; obtaining the first motion information; determining the second motion information based on the first motion information; and determining prediction samples of the current picture block based on the first motion information and the second motion information.

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：US20230319322A1

公开(公告)日：2023-10-05

申请号：US18295986

申请日：2023-04-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Anand Meher KOTRA ,  Semih ESENLIK ,  Jianle CHEN ,  Biao WANG ,  Han GAO ,  Zhijie ZHAO

IPC: H04N19/96 ,  H04N19/172 ,  H04N19/52

CPC classification number: H04N19/96 ,  H04N19/172 ,  H04N19/52

Abstract: A video processing method, comprising: initializing a HMVP list for a current CTU row when the current CTU is the beginning CTU of a current CTU row; and processing the current CTU row based on the HMVP list. By performing the method, the encoding efficiency and decoding efficiency are improved.

公开(公告)号：US20230171437A1

公开(公告)日：2023-06-01

申请号：US17955229

申请日：2022-09-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han GAO ,  Semih ESENLIK ,  Jianle CHEN ,  Anand Meher KOTRA ,  Biao WANG ,  Zhijie ZHAO

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: The present disclosure relates generally to video coding and picture partitioning methods. In particular, the disclosure is concerned with relations between partition constraint elements, by setting partitioning rules for different picture partitioning methods. The disclosure provides devices and corresponding methods for generating or processing a bitstream including encoded pictures, particularly for setting and including partition constraint element into the bitstream. One of the devices is configured to determine a minimum luma size of a leaf block resulting from quadtree splitting (MinQtSizeY), determine a maximum luma size of a coding block where partitioning using a binary tree splitting is allowed (MaxBtSizeY) based on the MinQtSizeY, and include information for the determined MinQtSizeY into the bitstream.

公开(公告)号：US20230025763A1

公开(公告)日：2023-01-26

申请号：US17856428

申请日：2022-07-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Biao WANG ,  Semih ESENLIK ,  Anand Meher KOTRA ,  Han GAO ,  Jianle CHEN

IPC: H04N19/11 ,  H04N19/167 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/186

Abstract: Devices and methods for Intra prediction are provided. The method includes: obtaining a value of an indication information of a current block. When the value of the indication information indicates the intra prediction mode of the current block is not comprised in the set of most probable modes, deriving the intra prediction mode IntraPredModeY of the current block by the following ordered steps: i. IntraPredModeY is set equal to intra_luma_mpm_remainder[xCb][yCb], ii. The value of IntraPredModeY is incremented by one. The method can improve the efficiency to determine the intra prediction mode of the current block.

公开(公告)号：US20230007273A1

公开(公告)日：2023-01-05

申请号：US17897216

申请日：2022-08-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han GAO ,  Semih ESENLIK ,  Biao WANG ,  Anand Meher KOTRA ,  Jianle CHEN

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/96

Abstract: A method of coding implemented by a decoding device, comprising initializing a dedicated buffer for intra block copy (IBC) referencing, when a current coding tree unit (CTU) to be decoded is a first CTU of a CTU row, determining whether a current block in the current CTU is predicted using IBC mode, obtaining an IBC block vector for the current block when the current block is predicted using IBC mode, and obtaining predicted sample values for the current block, based on reference samples from the dedicated buffer and the IBC block vector for the current block.

公开(公告)号：US20220256184A1

公开(公告)日：2022-08-11

申请号：US17731109

申请日：2022-04-27

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 indication information, where the indication information is used to indicate that second motion information is determined based on first motion information, the first motion information is motion information of a current picture block in a first direction, and the second motion information is motion information of the current picture block in a second direction; obtaining the first motion information; determining the second motion information based on the first motion information; and determining prediction samples of the current picture block based on the first motion information and the second motion information.

公开(公告)号：US20220224895A1

公开(公告)日：2022-07-14

申请号：US17582947

申请日：2022-01-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Anand Meher KOTRA ,  Zhijie ZHAO ,  Jianle CHEN

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/169 ,  H04N19/82

Abstract: An apparatus and a method for filtering reconstructed images, in particular, video images, with adaptive multiplicative filters. The efficiency of the filtering operation is increased by restricting the allowable values of the filter coefficients to those that have only a limited number of “ones” in the binary representation.

公开(公告)号：US20210314581A1

公开(公告)日：2021-10-07

申请号：US17303976

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang MA ,  Jianle CHEN ,  Haitao YANG

IPC: H04N19/196 ,  H04N19/176 ,  H04N19/186 ,  H04N19/132 ,  H04N19/159 ,  H04N19/593

Abstract: This application provides a chroma block prediction method and apparatus. The method includes: obtaining a maximum luma value and a minimum luma value based on luma samples corresponding to neighboring samples of a target chroma block, and calculating a first difference between the maximum luma value and the minimum luma value; if the first difference is not equal to 0, processing the first difference based on a quantity of significant bits of the first difference and a first preset bit depth to obtain a second difference; and determining, based on a first chroma value, a second chroma value, and the second difference, an intra prediction model parameter corresponding to the target chroma block, and determining prediction information of the target chroma block based on the intra prediction model parameter and luma reconstruction information corresponding to the target chroma block.

公开(公告)号：US20210266538A1

公开(公告)日：2021-08-26

申请号：US17245037

申请日：2021-04-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han GAO ,  Semih ESENLIK ,  Biao WANG ,  Anand Meher KOTRA ,  Jianle CHEN

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/159 ,  H04N19/132 ,  H04N19/176

Abstract: Methods, systems, and computer programs encoded on a computer storage medium for marking the availability of a potential candidate coding block for intra prediction mode estimation of a current coding block are provided. One example method includes obtaining a parent block of a current coding block (parentCurr), and a parent block of a candidate coding block (parentCand). The current coding block and the candidate coding block are each obtained by splitting of the parentCurr and the parentCand, respectively. In one aspect, the current coding block cannot use an intra prediction mode of a potential candidate coding block when parentCand and parentCurr are the same block, a function of a number of quadtree, ternary tree, and binary tree splitting operations is greater than a threshold minus 1, and a split mode of the parent block of the current coding block parentCurr is a ternary tree split.