公开(公告)号：US20210289222A1

公开(公告)日：2021-09-16

申请号：US17333351

申请日：2021-05-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/50 ,  H04N19/159 ,  H04N19/46 ,  H04N19/70 ,  H04N19/176

Abstract: The present disclosure relates to the field of picture processing. Especially, the disclosure deals with improving the prediction of a block of a picture when decoding or encoding. A method of coding a block of a picture, comprising: obtaining an indication parameter for a current coding block. The indication parameter represents whether a multi-hypothesis prediction is applied to the current coding block. When the indication parameter represents that the multi-hypothesis prediction is applied to the current coding block, coding the current coding block according to a planar mode.

公开(公告)号：US20210266541A1

公开(公告)日：2021-08-26

申请号：US17317126

申请日：2021-05-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/105 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176

Abstract: A method of and an apparatus for encoding and decoding are provided. The method comprises determining whether, as a condition for not applying binary splitting to a current block, determining whether the current block is a boundary block and whether a multi-type tree depth resulting from multi-type tree splitting of a quadtree leaf, is equal to or greater than a sum of a maximum boundary multi-type partition depth and a depth offset. Binary splitting is applied in accordance with a result of determining whether said condition is satisfied.

公开(公告)号：US20210258574A1

公开(公告)日：2021-08-19

申请号：US17243792

申请日：2021-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/46 ,  H04N19/176

Abstract: The present disclosure provides a method of coding implemented by a decoding device, the method comprising: obtaining a splitting mode index value for a current coding block; obtaining an angle index value angleIdx for the current coding block according to the splitting mode index value and a table that specifies the angle index value angleIdx based on the splitting mode index value; setting an index value partIdx according to the angle index value angleIdx; and decoding the current coding block according to the index value partIdx.

公开(公告)号：US20210185317A1

公开(公告)日：2021-06-17

申请号：US17188940

申请日：2021-03-01

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/122 ,  H04N19/119 ,  H04N19/60 ,  H04N19/176 ,  H04N19/44

Abstract: A method for boundary partition of a current block is provided. The method includes obtaining a partition indicator from a received bitstream; determining whether the partition indicator indicates that the current block is to be split and whether the current block is a boundary block; and performing a non-inverse transform operation on an inside part of the current block when the partition indicator indicates that the current block is not to be split and the current block is a boundary block, wherein the inside part of the block is located within the picture. For the boundary block which is determined not to be split, a non-inverse transform operation is chosen. This avoids a normal inverse transform on the residuals of the inside part (within the picture) of the current block in the decoder, so number of blocks for the inverse transformation is decreased, and decoding complexity is thus reduced.

公开(公告)号：US20210006786A1

公开(公告)日：2021-01-07

申请号：US17005292

申请日：2020-08-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/70 ,  H04N19/176 ,  H04N19/96 ,  H04N19/159 ,  H04N19/186

Abstract: The present disclosure provides an encoding apparatus and a decoding apparatus, as well as an encoding method and a decoding method. In particular, the present disclosure relates to block partitioning and signaling the partitioning parameters in a bitstream. An override flag in an image region header indicates whether or not a block is to be partitioned according to a first partition constraint information. The override flag is included in the bitstream and the block is partitioned accordingly.

公开(公告)号：US20200137416A1

公开(公告)日：2020-04-30

申请号：US16730735

申请日：2019-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Zhijie ZHAO ,  Anand Meher KOTRA ,  Han GAO

IPC: H04N19/573 ,  H04N19/513 ,  H04N19/533 ,  H04N19/56

Abstract: The present disclosure relates to the performance of motion vector refinement in a search space for multi-reference inter-prediction. Two or more reference pictures are selected, one of those used for motion vector refinement. Based on an initial estimate of a motion vector to the reference picture for motion vector refinement, a search space in this reference image is constructed. Using template matching, the first motion vector is refined. The second motion vector to another reference picture is calculated using its initial estimate, the initial estimate of the first motion vector and the refined first motion vector. The search spaces used in template matching in different iterations overlap.

公开(公告)号：US20240146924A1

公开(公告)日：2024-05-02

申请号：US18545145

申请日：2023-12-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46

Abstract: The present disclosure provides a method of coding implemented by a decoding device, the method comprising: obtaining a value of a splitting mode index for a current coding block; obtaining a value of an angle index for the current coding block according to the value of the splitting mode index value and a pre-stored table; setting a value of an index partIdx according to the value of the angle index; and storing motion information for the current coding block according to the value of the index partIdx.

公开(公告)号：US20240137527A1

公开(公告)日：2024-04-25

申请号：US18371231

申请日：2023-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/197

Abstract: A method of coding implemented by a decoding device or an encoding device, comprising obtaining indication information for a luma position (cbWidth/2, cbHeight/2) of a current coding block, relative to a top-left luma sample position (xCb, yCb) of the current coding block; setting a value of a luma intra prediction mode associated with the current coding block to a first default value, when the indication information indicates that an Intra Block Copy (IBC) mode or palette mode is applied for the luma component at the luma position (cbWidth/2, cbHeight/2), relative to the top-left luma sample position (xCb, yCb) of the current coding block; and obtaining a value of a chroma intra prediction mode based on the value of the luma intra prediction mode of the current coding block.

公开(公告)号：US20240056596A1

公开(公告)日：2024-02-15

申请号：US18494045

申请日：2023-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/50 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/50 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: The present disclosure relates to the field of picture processing. Especially, the disclosure deals with improving the prediction of a block of a picture when decoding or encoding. A method of coding a block of a picture, comprising: obtaining an indication parameter for a current coding block. The indication parameter represents whether a multi-hypothesis prediction is applied to the current coding block. When the indication parameter represents that the multi-hypothesis prediction is applied to the current coding block, coding the current coding block according to a planar mode.

公开(公告)号：US20230068266A1

公开(公告)日：2023-03-02

申请号：US17951499

申请日：2022-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/70 ,  H04N19/187 ,  H04N19/172

Abstract: A method of decoding of a video or picture bitstream implemented by a decoding device, the bitstream including a current sequence parameter set (SPS) comprising syntax elements that apply to a video sequence, the method comprising: obtaining a first syntax element used to determine a maximum number of temporal sublayers that is allowed to be present in each coded layer video sequence) referring to the current SPS, wherein a value of the first syntax element is in a range of 0 to a first value, wherein the first value is a value of a second syntax element used to determine the maximum number of temporal sublayers that is allowed to present in a layer in each coded video sequence referring to a video parameter set, when the second syntax element is referred to by the SPS; decoding the bitstream based on the value of the first syntax element.