公开(公告)号：US11277608B2

公开(公告)日：2022-03-15

申请号：US17156246

申请日：2021-01-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher Kotra ,  Biao Wang ,  Semih Esenlik ,  Jianle Chen ,  Han Gao ,  Zhijie Zhao

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

Abstract: The present disclosure relates to a method and device of decoding video data. The device and method use a mapping process to simplify the calculation procedure for intra prediction, to improve coding efficiency. The decoding of encoded data comprises: obtaining an indication indicating whether the intra-prediction mode for a picture block is in a set of most probable modes, MPM, or not; if the indication indicates that the intra prediction mode for the picture block is not in the set of MPMs, generating a mapping relationship between at least one intra prediction mode in the first set of intra prediction modes and at least one intra prediction mode in the set of non-MPMs; decoding the encoded data to obtain an intra prediction mode codeword for the picture block; and obtaining the intra prediction mode for the picture block according to the mapping relationship and the intra prediction mode codeword.

公开(公告)号：US11245900B2

公开(公告)日：2022-02-08

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: H04N19/46 ,  H04N19/119 ,  H04N19/136 ,  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：US11240493B2

公开(公告)日：2022-02-01

申请号：US17014993

申请日：2020-09-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao Wang ,  Anand Meher Kotra ,  Semih Esenlik ,  Han Gao ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

Abstract: Apparatuses and methods for encoding and decoding a video are provided. A method includes determining whether at least one of two blocks of an image in a video is predicted with a combined inter-intra prediction (CIIP), wherein the two blocks include a first block (block Q) and a second block (block P). There is a boundary between the two blocks. The method further includes setting a boundary strength (Bs) for the boundary to a first value based on determining that at least one of the two blocks is predicted with the CIIP, and performing deblocking for the boundary between the first block and the second block based on the Bs to generate a modified reconstructed block for each of the first block and the second block.

公开(公告)号：US20220021883A1

公开(公告)日：2022-01-20

申请号：US17489793

申请日：2021-09-30

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Semih Esenlik ,  Max Blaeser ,  Zhijie Zhao ,  Han Gao ,  Anand Meher Kotra ,  Biao Wang ,  Elena Alexandrovna Alshina

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176

Abstract: A method of coding implemented by a decoding device, comprising obtaining a value of a parameter for a current block, the value of the parameter indicating a partition mode for the current block; obtaining a first prediction mode for the current block; obtaining a second prediction mode for the current block; generate a first prediction value for a chroma sample in the current block according to the first prediction mode; generate a second prediction value for a chroma sample in the current block according to the second prediction mode; obtaining a combined prediction value by combining the first prediction value and the second prediction value.

公开(公告)号：US20210377532A1

公开(公告)日：2021-12-02

申请号：US17401865

申请日：2021-08-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Biao Wang ,  Semih Esenlik ,  Anand Meher Kotra ,  Han Gao ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A method of video coding implemented by a coding device includes obtaining block size information of a current block to be coded in an intra sub-partition (ISP) coding mode, determining a partitioning direction based on the block size information, determining, based on the block size information, a number of sub-partitions to which the current block is to be partitioned in the partitioning direction, wherein the sub-partitions are for intra prediction separately with a width of each of the sub-partitions bigger than or equal to 4 or collaboratively by combining at least two of the sub-partitions with a combined width of the at least two sub-partitions bigger than or equal to 4, and coding the sub-partitions.

公开(公告)号：US20210274216A1

公开(公告)日：2021-09-02

申请号：US17317711

申请日：2021-05-11

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Semih Esenlik ,  Han Gao ,  Anand Meher Kotra ,  Biao Wang ,  Jianle Chen

IPC: H04N19/56 ,  H04N19/57

Abstract: An inter-prediction method and apparatus are provided. An initial motion vector is obtained for a current block. Search space positions are determined according to the initial motion vector. Matching costs for the search space positions are checked according to a checking order to select a target search space position with a minimal matching cost. A refining motion vector of the current block is determined based on the initial motion vector and the target search space position. A central search space position is determined first according to the checking order, and the central search space position is pointed to by the initial motion vector.

公开(公告)号：US11082714B2

公开(公告)日：2021-08-03

申请号：US16730823

申请日：2019-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih Esenlik ,  Anand Meher Kotra ,  Zhijie Zhao ,  Han Gao

IPC: H04N19/56 ,  H04N19/513 ,  H04N19/55

Abstract: The present invention relates to the construction of a search space for determining a motion vector for a current block of a picture in a video sequence. The search space construction is split into two main stages, wherein a first and a second partial search space are respectively determined. Based on an initial estimate of a motion vector, a first search space is first constructed. A first and a second candidate motion vector of the first search space are identified according to a cost function. Based on the first and the second candidate motion vectors, a second search space is constructed. The motion vector for the current block is selected from the candidate motion vectors of the first search space and the second search space.

公开(公告)号：US20210235127A1

公开(公告)日：2021-07-29

申请号：US17228306

申请日：2021-04-12

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jianle Chen ,  Anand Meher Kotra ,  Semih Esenlik ,  Biao Wang ,  Han Gao ,  Zhijie Zhao

IPC: H04N19/86 ,  H04N19/82 ,  H04N19/96 ,  H04N19/176 ,  H04N19/186

Abstract: A method and image processing device are provided, including a deblocking filter. The deblocking filter modifies values of at most MA samples of the first image block as first filter output values, the at most MA samples being obtained from a column of the first image block that is perpendicular to and adjacent to the horizontal block edge; and modifies values of at most MB samples of the second image block as second filter output values, the at most MB samples being obtained from a column of the second image block that is perpendicular to and adjacent to the horizontal block edge. At most a number MA of sample values of the first image block adjacent to the block edge are modified and at most a number MB of sample values of the second image block adjacent to the block edge are modified, wherein MA

公开(公告)号：US11044469B2

公开(公告)日：2021-06-22

申请号：US16947840

申请日：2020-08-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher Kotra ,  Biao Wang ,  Semih Esenlik ,  Jianle Chen ,  Zhijie Zhao ,  Han Gao

IPC: H04N7/18 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/169

Abstract: A method for constructing a most probable mode (MPM) list for prediction process corresponding to video block is provided. The method includes determining whether a left block of a current coding block is available, in response to determining that the left block of the current coding block is available, adding an intra prediction mode of the left block into an MPM list; determining whether an above block of the current coding block is available, in response to determining that the above block of the current coding block is available, adding an intra prediction mode of the above block into the MPM list; adding an offset to the prediction mode of the left block to obtain a new prediction mode; and adding the above-offset prediction mode into the MPM list when the above-offset prediction mode is not in the MPM list. The MPM list is used to improve coding efficiency.

公开(公告)号：US20210084298A1

公开(公告)日：2021-03-18

申请号：US17106163

申请日：2020-11-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han Gao ,  Semih Esenlik ,  Zhijie Zhao ,  Anand Meher Kotra ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/70 ,  H04N19/169 ,  H04N19/176

Abstract: A method for boundary partition of a current block of a picture is provided. The method includes that a decoder receives a bitstream, where the bitstream includes a partition indicator; parses the bitstream to obtain the partition indicator; determines whether the current block is to be split based on the partition indicator; determines whether the current block is a boundary block when the current block is not to be split; and performs a boundary partition on the current block when the current block is a boundary block. The partition indicator of a same partition syntax is used no matter whether the current block is a boundary block (isB) or a non-boundary block (noB), which is benefit to keep the continuity of context-adaptive binary arithmetic coding (CABAC) engine, thus it will lead to higher coding efficiency.