公开(公告)号：US20200236359A1

公开(公告)日：2020-07-23

申请号：US16844796

申请日：2020-04-09

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/30 ,  H04N19/46 ,  H04N19/172

Abstract: An apparatus and a method for image coding with boundary partitioning processing are disclosed. In image coding, and particularly in video coding, images are typically split into smaller blocks or units that are then processed. Effective splitting or partitioning has an important role in effective image coding. The apparatus and method use a particular boundary partitioning processing for improving splitting, which can be used in improving compression performance. The boundary partitioning reduces unnecessary partitioning on the frame boundary and reduces complexity of a forced partitioning procedure.

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.

公开(公告)号：US20220400282A1

公开(公告)日：2022-12-15

申请号：US17849405

申请日：2022-06-24

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/513 ,  H04N19/57

Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.

公开(公告)号：US20220394291A1

公开(公告)日：2022-12-08

申请号：US17832353

申请日：2022-06-03

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/563 ,  H04N19/103 ,  H04N19/176 ,  H04N19/57 ,  H04N19/80 ,  H04N19/172 ,  H04N19/513 ,  H04N19/55 ,  H04N19/56 ,  H04N19/577

Abstract: The present disclosure relates to motion vector determination using template or bilateral matching and predictor generation based on the motion vector. The template or bilateral matching and/or the predictor generation use interpolation filtering. The interpolation filtering operation accesses integer sample positions within a window, and further uses padded sample values for integer sample positions outside the window, which are based on at least one sample within said window, and uses the accessed integer sample position values as well as the padded sample values to perform the template or bilateral matching and/or predictor generation.

公开(公告)号：US20220377326A1

公开(公告)日：2022-11-24

申请号：US17871753

申请日：2022-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/96 ,  H04N19/167

Abstract: A method of filtering a sample value of a picture and a video decoding apparatus are disclosed, the method comprises: obtaining a reconstructed sample value for a block of the picture; obtaining filter coefficients for adaptive loop filtering according to a bitstream; obtaining a sum value according to the filter coefficients and the reconstructed sample value for the block; rounding the sum value according to a vertical position of a sample in the block, to obtain a rounded sum value; obtaining a filter reconstructed sample value for the block according to the rounded sum value.

公开(公告)号：US20220368888A9

公开(公告)日：2022-11-17

申请号：US17466129

申请日：2021-09-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sriram SETHURAMAN ,  Semih ESENLIK ,  Jeeva Raj A ,  Sagar KOTECHA

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/46 ,  H04N19/176

Abstract: The present disclosure provides an inter prediction method, comprising the steps of obtaining an initial motion vector and a reference picture for bi-prediction; obtaining sets of candidate sample positions in the reference picture according to the initial motion vector and candidate motion vectors, wherein each candidate motion vector is derived by the initial motion vector and a respective motion vector offset, and wherein each set of candidate sample positions corresponds to each candidate motion vector; obtaining a respective set of sample positions from each set of candidate sample positions; computing a matching cost for each candidate motion vector within each set of sample positions; obtaining a refined motion vector based on the computed matching cost of each candidate motion vector; and obtaining prediction values for a current block based on the refined motion vector.

公开(公告)号：US20220286684A1

公开(公告)日：2022-09-08

申请号：US17684224

申请日：2022-03-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: The general intra prediction process is unnecessarily complicated with inclusion of the reference sample filtering. This application provides solutions for this problem. A method for intra prediction is provided. The method includes: during an intra predicted sample generation stage, obtaining a filtering indication, which indicates whether a filtered value or an unfiltered value of reference samples of the current coding block will be used. When the value of the filtering indication is true, a prediction sample is generated by using the filtered value of the reference samples based on the planar mode. When the value of the filtering indication is false, a prediction sample is generated by using the unfiltered value of the reference samples based on the planar mode. As a result, the reference sample filtering stage can be fully removed or can be combined with other stage.