公开(公告)号：US11716479B2

公开(公告)日：2023-08-01

申请号：US17830875

申请日：2022-06-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Yin Zhao ,  Sergey Yurievich Ikonin ,  Jianle Chen

IPC: H04N11/02 ,  H04N19/186 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60 ,  H04N19/70

CPC classification number: H04N19/186 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60 ,  H04N19/70

Abstract: A method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax and a coding unit syntax, the transform unit syntax includes a value of a first flag and a value of a second flag related to, respectively, a first chroma transform block and a second chroma transform block of a current transform unit or a current sub-transform unit within the current transform unit, the first or second flag specifies whether the first or second chroma transform block contains at least one transform coefficient levels not equal to 0, the coding unit syntax includes a value of a third flag specifying whether a transform tree structure is present or not; and deriving a value of a fourth flag based on the values of the first, second, and third flags, the fourth flag specifies whether a luma transform block contains at least one transform coefficient levels not equal to 0.

公开(公告)号：US11689723B2

公开(公告)日：2023-06-27

申请号：US17249946

申请日：2021-03-19

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：US20230199227A1

公开(公告)日：2023-06-22

申请号：US18172174

申请日：2023-02-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Kamilla Railevna DAVLETSHINA ,  Sergey Yurievich Ikonin ,  Elena Alexandrovna Alshina

IPC: H04N19/80 ,  H04N19/60 ,  H04N19/182 ,  H04N19/176

CPC classification number: H04N19/80 ,  H04N19/60 ,  H04N19/182 ,  H04N19/176

Abstract: A method of coding is implemented by a decoding device, the method includes: receiving a bitstream, and obtaining from the bitstream, a first luma bit depth value of luma samples of a current picture. The method also includes performing a Hadamard Transform Domain Filtering (HTDF) post reconstruction filtering of a block of the current picture by using a lookup table based on the obtained first luma bit depth value.

公开(公告)号：US20220174326A1

公开(公告)日：2022-06-02

申请号：US17678253

申请日：2022-02-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich Solovyev ,  Maxim Borisovitch Sychev ,  Huanbang Chen ,  Alexander Alexandrovich Karabutov ,  Roman Igorevich Chernyak ,  Sergey Yurievich Ikonin ,  Haitao Yang ,  Elena Alexandrovna Alshina

IPC: H04N19/80 ,  H04N19/139 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/117 ,  H04N19/61 ,  H04N19/122 ,  H04N19/85

Abstract: A method for coding a video implemented in an encoder or a decoder including the enhanced interpolation filter, EIF, for motion compensation, the method comprising: i) determining control point motion vectors, CPMVs, for a block according to affine inter-prediction, the block being an affine block or a sub-block of the affine block; ii) for a predefined sub-block size determining a reference area for a sub-block with the predefined sub-block size according to values of the CPMVs; iii) comparing the determined reference area with a predefined threshold; iv) applying EIF for motion compensation, comprising deriving the pixel-based motion vector field for the block; wherein if the determined reference area is larger than the threshold, deriving the pixel-based motion vector field for the block further comprises motion vector clipping, wherein motion vector clipping range is determined based on motion model of the block and the size of the block.

公开(公告)号：US12244806B2

公开(公告)日：2025-03-04

申请号：US17700904

申请日：2022-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Sergey Yurievich Ikonin ,  Timofey Mikhailovich Solovyev ,  Alexander Alexandrovich Karabutov ,  Elena Alexandrovna Alshina

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: A method for inverse quantization of a current block of a picture, the method comprising: receiving a bitstream; obtaining a joint chrominance component residual, JCCR, control flag from the bitstream; obtaining a chrominance mapping information from the bitstream based on the JCCR control flag; obtaining at least one chrominance quantization parameter, QP, offset from the bitstream based on the JCCR control flag; obtaining a QP value for the current chrominance block based on the obtained chrominance mapping information and the at least one obtained chrominance QP offset; performing inverse quantization on the current chrominance block by using the obtained QP value.

公开(公告)号：US12206903B2

公开(公告)日：2025-01-21

申请号：US18371593

申请日：2023-09-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin ,  Alexander Alexandrovich Karabutov ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/107 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

Abstract: The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.

公开(公告)号：US12177469B2

公开(公告)日：2024-12-24

申请号：US18146372

申请日：2022-12-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich Solovyev ,  Semih Esenlik ,  Jianle Chen ,  Anand Meher Kotra ,  Han Gao ,  Biao Wang ,  Roman Igorevich Chernyak ,  Alexander Alexandrovich Karabutov ,  Sergey Yurievich Ikonin

IPC: H04N19/503 ,  H04N19/105 ,  H04N19/13 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A prediction method for an image block comprising a first prediction sub-block and a second prediction sub-block, the prediction method comprising: parsing a first index from a bitstream, wherein the first index is used to obtain prediction information of the first prediction sub-block; parsing a second index from the bitstream; comparing the first index with the second index; adjusting the second index in the event that the second index is equal to or greater than the first index; and obtaining prediction information of the second prediction sub-block according to the adjusted second index.

公开(公告)号：US11924407B2

公开(公告)日：2024-03-05

申请号：US17451139

申请日：2021-10-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin ,  Roman Igorevich Chernyak ,  Alexander Alexandrovich Karabutov ,  Elena Alexandrovna Alshina ,  Huanbang Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82

Abstract: The present disclosure relates to video encoding and decoding, and in particular, a method for inter prediction for a block in a frame of a video signal includes: constructing a history-based motion information candidate list, wherein the list is an ordered list comprising N history-based motion information candidates Hk containing motion information of N preceding blocks preceding the block, wherein each history-based motion information candidate comprises: one or more motion vectors (MVs), one or more reference picture indices corresponding to the MVs, and an interpolation filter index; adding one or more history-based motion information candidates from the history-based motion information candidate list into a motion information candidate list for the block; and deriving motion information for the block based on the motion information candidate list.

公开(公告)号：US11765383B2

公开(公告)日：2023-09-19

申请号：US17237924

申请日：2021-04-22

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：US11706412B2

公开(公告)日：2023-07-18

申请号：US17139913

申请日：2020-12-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Victor Alexeevich Stepin ,  Sergey Yurievich Ikonin ,  Roman Igorevich Chernyak ,  Jianle Chen ,  Dmitry Yurievich Kuryshev

IPC: H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82 ,  H04N19/105 ,  H04N19/129 ,  H04N19/60 ,  G06F1/03 ,  H04N19/80

CPC classification number: H04N19/117 ,  G06F1/03 ,  H04N19/105 ,  H04N19/124 ,  H04N19/129 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/60 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82

Abstract: A filter for video coding is configured for processing a block for generation of a filtered block, where the block comprises a plurality of pixels. The filter includes one or more processor configured to: scan a current pixel of the block and its neighboring pixels of the current pixel according to a predefined scan template, obtain spectrum components by performing transform for the current pixel and its neighboring pixels, obtain filtered spectrum components based on a filtering parameter and the spectrum components, obtain filtered pixels by performing inverse transform for the filtered spectrum components, and generate a filtered block based on the filtered pixels.