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：US20210195232A1

公开(公告)日：2021-06-24

申请号：US17135624

申请日：2020-12-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Zhijie ZHAO ,  Ivan KRASNOV ,  Jianle CHEN

IPC: H04N19/513 ,  H04N19/172 ,  H04N19/55 ,  H04N19/56 ,  H04N19/176 ,  H04N19/57 ,  H04N19/577

Abstract: An apparatus and method determining a motion vector for a block, which relates to motion vector determination employing template matching or bilateral matching, are provided. At first, candidate motion vectors are obtained and are mapped to respective representatives (representative motion vectors). In particular, if the obtained candidate motion vectors point to fractional positions and thus, interpolation from the integer sample positions is required, the initial motion vector is rounded to a closest integer sample position. The rounded position is then used to define the search space for the template or bilateral matching to determine the best matching motion vector for the block (in other words, a refinement of an initial motion vector around which the candidate space is spanned). Finally, the mapping operation can be reverted in order to obtain a result in the original search space.

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：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：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：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：US20220295048A1

公开(公告)日：2022-09-15

申请号：US17830782

申请日：2022-06-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: Parallel processing of inter prediction of a current coding block and preceding coding blocks depending on the partition depth of the current coding block is disclosed. An apparatus comprises a processing circuitry configured for: obtaining a value of a parameter for the current coding block, wherein the value of the parameter indicates a partition depth of the current coding block, and performing an inter prediction process for the current coding block; wherein no Motion Vector Predictor candidate comprising a motion vector of a coded block of the picture that is not spatially adjacent to the current coding block for the current coding block is used in the inter prediction process or a merge mode inter prediction process comprised in the inter prediction process, when the value of the parameter for the current coding block is greater than a threshold.