公开(公告)号：US20250055982A1

公开(公告)日：2025-02-13

申请号：US18918992

申请日：2024-10-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

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：US20250047853A1

公开(公告)日：2025-02-06

申请号：US18923375

申请日：2024-10-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sergey Yurievich IKONIN ,  Roman Igorevich CHERNYAK ,  Timofey Mikhailovich SOLOVYEV ,  Alexander Alexandrovich KARABUTOV ,  Jianle CHEN ,  Elena Alexandrovna ALSHINA

IPC: H04N19/126 ,  H04N19/124 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/44

Abstract: A method of obtaining a chrominance quantization parameter (QP) for chrominance components based on a luminance QP for luminance component, wherein the method is performed by a decoder, comprising parsing a received bitstream to obtain the luminance QP and information of a mapping function (ƒ) which associates a QP index (QPi) to the chrominance QP (QPc); obtaining the QPi based at least in a part on the luminance QP; obtaining the mapping function based on the obtained information; and obtaining a QPc based on the obtained mapping function and the obtained QPi.

公开(公告)号：US20240422353A1

公开(公告)日：2024-12-19

申请号：US18820014

申请日：2024-08-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/176

Abstract: A method of coding comprises determining a predicted sample value P(x, y) based on one or more reference sample values for a sample from a plurality of samples of a block using a DC intra-prediction mode; determining a vertical weighting factor based on one of a height of the block, a width of the block, or both; determining a horizontal weighting factor based on one of the height, the width, or both; obtaining a modified predicted sample value {circumflex over (P)}(x, y) without a weighting factor of the top-left reference sample R−1,−1 based on: (wL×R-1,y+WT×Rx,−1+(64−wL−wT)×P(x,y)+32))>>6; and reconstructing the block based on the modified predicted sample value {circumflex over (P)}(x, y) and a residual block; wherein wT is the vertical weighting factor, wL is the horizontal weighting factor, Rx,−1 represents a value of nearest reference samples located above the sample, and R−1,y represents a value of nearest reference samples located to the left of the sample.

公开(公告)号：US20240414329A1

公开(公告)日：2024-12-12

申请号：US18802109

申请日：2024-08-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

Abstract: A method of coding implemented by a decoding device, comprising: setting a value of candidate intra prediction mode of a current block to be a default value, wherein the current block is predicted using an intra prediction mode but not a Matrix-based Intra Prediction (MIP) mode and a neighboring block adjacent to the current block is used to derive the value of candidate intra prediction mode of the current block and is predicted using MIP mode; obtaining a value of the intra prediction mode of the current block according to the default value.

公开(公告)号：US20240205397A1

公开(公告)日：2024-06-20

申请号：US18589185

申请日：2024-02-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

Abstract: Embodiments of the present disclosure relate to the field of picture processing. Especially, the embodiments are directed to improving the deblocking filter of an image coding device. During the deblocking, at most a number MA of sample values of the first coding block adjacent to the block edge are modified and at most a number MB of sample values of the second coding block adjacent to the block edge are modified; or at most a number MA of sample values of the second coding block adjacent to the block edge are modified and at most a number MB of sample values of the first coding block adjacent to the block edge are modified, MA≠MB.

公开(公告)号：US20240146974A1

公开(公告)日：2024-05-02

申请号：US18529826

申请日：2023-12-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/82 ,  H04N19/105 ,  H04N19/50

CPC classification number: H04N19/82 ,  H04N19/105 ,  H04N19/50

Abstract: The present disclosure relates to intra- or inter-prediction for video encoding and decoding. For that purpose, an apparatus and methods obtain a reference sample and a subpixel offset value. A 4-tap interpolation filter is used to filter the reference sample to obtain a predicted sample value. The filter coefficients c0, c1, c2, and c3 of the 4-tap interpolation filter satisfy subpixel offset.






c
0

=


1
⁢
6

-

p
2



,








c
1

=


1
⁢
6

+

1
⁢
6

-

p
2



,








c
2

=


1
⁢
6

+

p
2



,





and







c
3

=

p
2


,




with p being a fractional part of the value of the

公开(公告)号：US20240137499A1

公开(公告)日：2024-04-25

申请号：US18400754

申请日：2023-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/107 ,  H04N19/119 ,  H04N19/176

CPC classification number: H04N19/107 ,  H04N19/119 ,  H04N19/176

Abstract: The present disclosure provides methods and devices of processing a block according to a merge candidate list, the method comprising: constructing a first list according to motion information of neighboring blocks of a current block; obtaining prediction information of the current block; when the prediction information of the current block indicates that a sub-block prediction is applied to the current block, obtaining a uni-prediction candidate for the current block according to the first list; using, the uni-prediction candidate for the current block to perform inter prediction of the current block. According to embodiment of the present disclosure, the regular merge list can be directly used and there is no need to explicitly generate the uni-prediction merge candidate list for sub-block prediction.

公开(公告)号：US20240040146A1

公开(公告)日：2024-02-01

申请号：US18230384

申请日：2023-08-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich SOLOVYEV ,  Roman Igorevich CHERNYAK ,  Alexander Alexandrovich KARABUTOV ,  Jianle CHEN ,  Sergey Yurievich IKONIN ,  Elena Alexandrovna ALSHINA

IPC: H04N19/573 ,  H04N19/159 ,  H04N19/176 ,  H04N19/577

CPC classification number: H04N19/573 ,  H04N19/159 ,  H04N19/176 ,  H04N19/577

Abstract: The present disclosure relates to video encoding and decoding, and in particular to determining motion information for a current block using a history-based motion vector predictor, HMVP, list. The HMVP list is constructed, with said list being an ordered list of N HMVP candidates Hk, k=0, . . . , N−1, which are associated with motion information of N preceding blocks of the frame and precede the current block. Each HMVP candidate has motion information including elements of one or more motion vectors, MVs, one or more reference picture indices corresponding to the MVs, and one or more bi-prediction weight indices. One or more HMVP candidates from the HMVP list are added into a motion information candidate list for the current block; and the motion information is derived based on the motion information candidate list.

公开(公告)号：US20240040126A1

公开(公告)日：2024-02-01

申请号：US18483175

申请日：2023-10-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch SYCHEV ,  Timofey Mikhailovich SOLOVYEV ,  Alexander Alexandrovich KARABUTOV ,  Sergey Yurievich IKONIN ,  Jianle CHEN

IPC: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503

CPC classification number: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503

Abstract: The disclosure provides a motion vector compression method, comprising: obtaining a temporal motion vector; determining a compressed motion vector using a binary representation of the temporal motion vector comprising an exponent part and/or a mantissa part, wherein the exponent part comprises N bits, the mantissa part comprises M bits, and wherein N is a non-negative integer and M is a positive integer; and performing a temporal motion vector prediction (TMVP) using the compressed motion vector.

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.