公开(公告)号：US20240015290A1

公开(公告)日：2024-01-11

申请号：US18349988

申请日：2023-07-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Anand Meher KOTRA ,  Elena Alexandrovna ALSHINA ,  Semih ESENLIK ,  Biao WANG ,  Han GAO ,  Roman Igorevich CHERNYAK

IPC: H04N19/124 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/124 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186

Abstract: A method for deblocking a chroma block edge between a first chroma block of a first image block and a second chroma block of a second image block. The method includes a decision process which includes: determining a first chroma quantization parameter for the first chroma block based on a first luma quantization parameter of a first luma block of the first image block and a chroma QP mapping table for the first chroma block; determining a second chroma quantization parameter for the second chroma block based on a second luma quantization parameter of a second luma block of the second image block and a chroma QP mapping table for the second chroma block; determining an averaged and rounded chroma quantization parameter based on the first chroma quantization parameter and the second chroma quantization parameter; and determining a threshold parameter based on the averaged and rounded chroma quantization parameter.

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：US20230007270A1

公开(公告)日：2023-01-05

申请号：US17896012

申请日：2022-08-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Biao WANG ,  Anand Meher KOTRA ,  Elena Alexandrovna ALSHINA

IPC: H04N19/14 ,  H04N19/423 ,  H04N19/174

Abstract: A method of coding implemented by a decoding device and a decoder are disclosed, the method comprising: obtaining a bitstream for a current picture; obtaining a quantity of tiles in a tile row of the current picture; obtaining a value of an address of a current slice, the current slice is comprised in the current picture; obtaining a value of tileX according to the value of the address of the current slice; parsing an indication value for a slice width from the bitstream for the current picture, when a difference value between the quantity of tiles in the tile row of the current picture and the value of tileX is not equal to a first threshold.

公开(公告)号：US20220394247A1

公开(公告)日：2022-12-08

申请号：US17879337

申请日：2022-08-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher KOTRA ,  Semih ESENLIK ,  Biao WANG ,  Han GAO ,  Elena Alexandrovna ALSHINA

IPC: H04N19/117 ,  H04N19/70 ,  H04N19/176 ,  H04N19/186 ,  H04N19/174

Abstract: A method of coding is disclosed. The method comprises obtaining a bitstream for a coding block; obtaining a value of a syntax from the bitstream; obtaining a value of deblocking control parameter from the bitstream, when the value of the syntax is equal to a preset value.

公开(公告)号：US20220337870A1

公开(公告)日：2022-10-20

申请号：US17850123

申请日：2022-06-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao WANG ,  Semih ESENLIK ,  Anand Meher KOTRA ,  Han GAO ,  Elena Alexandrovna ALSHINA

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176

Abstract: A method of coding implemented is provided. The method includes the following operations: obtained the height and width of a prediction block without applying clipping operation; calculating a value of a vertical component of an intra prediction sample based on the height and width of the prediction block; calculating a value of a horizontal component of the intra prediction sample based on the height and width of the prediction block; and generating the intra prediction sample based on the value of the vertical component and the value of the horizon component.

公开(公告)号：US20220239909A1

公开(公告)日：2022-07-28

申请号：US17712980

申请日：2022-04-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Elena Alexandrovna ALSHINA ,  Semih ESENLIK ,  Anand Meher KOTRA ,  Biao WANG ,  Han GAO

IPC: H04N19/117 ,  H04N19/80 ,  H04N19/132 ,  H04N19/30 ,  H04N19/184

Abstract: A method for operating a two-dimensional (2D) separable interpolation filter for coding a video, wherein the two-dimensional separable interpolation filter comprises a first and a second one-dimensional (1D) interpolation filter and a temporal buffer of a predetermined buffer size, wherein the method comprises: obtaining filter coefficients for the first one-dimensional interpolation filter of the two-dimensional interpolation filter; comparing a sum of positive filter coefficients of the obtained filter coefficients with a threshold; and upon determining that the sum of positive filter coefficients is larger than the threshold, amending one or more of the filter coefficients to obtain amended filter coefficients, wherein the one or more filter coefficients are amended such that a sum of positive filter coefficients of the amended filter coefficients is not larger than the threshold; applying the amended filter coefficients to samples of the video to obtain a value of a fractional sample position of the video; re-scaling the value of the fractional sample position and storing the re-scaled value of the fractional sample position in the temporal buffer.

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.