公开(公告)号：US20230291904A1

公开(公告)日：2023-09-14

申请号：US18319174

申请日：2023-05-17

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/129 ,  H04N19/174 ,  H04N19/176 ,  H04N19/169

CPC classification number: H04N19/129 ,  H04N19/174 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/70

Abstract: A method of decoding of a picture from a video bitstream is disclosed. The video bitstream includes a slice header of a current slice and data representing the current slice. The method comprises: obtaining a parameter used to derive a number of tiles in the current slice from the slice header when a slice address of the current slice is not an address of a last tile in the picture where the current slice located; and reconstructing the current slice using the number of tiles in the current slice and the data representing the current slice.

公开(公告)号：US20230217025A1

公开(公告)日：2023-07-06

申请号：US18168188

申请日：2023-02-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/96 ,  H04N19/70

Abstract: The present disclosure relates to methods and devices to be employed for encoding and decoding of image or video signal. They include determination of whether or not the size of a current block is larger than a minimum allowed quadtree leaf node size. If the size of the current block is not larger than the minimum allowed quadtree leaf node size, multi-type tree splitting is applied to the current block. The minimum allowed quadtree leaf node size is not larger than a maximum allowed binary tree root node size or the minimum allowed quadtree leaf node size is not larger than a maximum allowed ternary tree root node size.

公开(公告)号：US20220286690A1

公开(公告)日：2022-09-08

申请号：US17827144

申请日：2022-05-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

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：US20220224944A1

公开(公告)日：2022-07-14

申请号：US17698824

申请日：2022-03-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/82

Abstract: A method of coding implemented by a decoding device, a decoder, an encoder are disclosed, the method comprising: obtaining a bitstream; obtaining a value of a syntax element sps_num_subpics_minus1 according to parse the bitstream; when the value of the syntax element sps_num_subpics_minus1 is greater than a preset value, obtaining a value of a syntax element sps_independent_subpics_flag from the bitstream.

公开(公告)号：US20220217420A1

公开(公告)日：2022-07-07

申请号：US17579387

申请日：2022-01-19

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50

Abstract: An apparatus and method of partitioning of an image or an image slice is described herein. In particular, on an image processing apparatus, the image or image slice is split into an integer number of coding tree units in both vertical and horizontal directions. The remaining boundary portion is then at least partly forced-split so that the deepest partitioning level is a result of binary partitioning, i.e. includes a coding unit which is longer on one side than on the other side. The longer side is parallel or concurrent to the image or image slice boundary.

公开(公告)号：US20220132144A1

公开(公告)日：2022-04-28

申请号：US17360805

申请日：2021-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Johannes SAUER ,  Ye-Kui WANG ,  Zhijie ZHAO ,  Semih ESENLIK

IPC: H04N19/174 ,  H04N19/172 ,  H04N19/119

Abstract: A device for encoding and a device for decoding a picture, respectively, and corresponding methods relating to the field of picture coding are provided. The devices are respectively configured to partition the picture into one or more slices, each slice comprising one or more tiles, and one or more slices holding coded picture data. Further, the devices are configured to encode the one or more slices holding coded picture data, thereby improving coding and decoding of pictures with uncoded buffer space.

公开(公告)号：US20220007052A1

公开(公告)日：2022-01-06

申请号：US17447952

申请日：2021-09-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Biao WANG ,  Semih ESENLIK ,  Jianle CHEN

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176

Abstract: Devices and methods for intra prediction of DC intra prediction mode are provided. The method includes: obtaining a value of an intra prediction reference line index of a transform block; obtaining prediction samples of the transform block based on reference samples from a reference line. The reference line is indexed by the value of the intra prediction reference line index. The method introduces a harmonization of MRL and non-directional intra prediction (i.e. DC). The harmonization consists of aligning the reference samples from a reference line, which is indexed by the value of the intra prediction reference line index.

公开(公告)号：US20210392334A1

公开(公告)日：2021-12-16

申请号：US17407617

申请日：2021-08-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/82 ,  H04N19/159 ,  H04N19/176

Abstract: It is provided a method of video coding implemented in a decoding device or an encoding device, the method comprising: obtaining initial motion vectors for a current block; obtaining first predictions for a sample value in the current block based on the initial motion vectors; calculating a first matching cost according to the first predictions; determining whether an optical flow refinement process should be performed or not, according to at least one preset condition, the at least one preset condition comprising a condition of whether the calculated first matching cost is equal to or larger than a threshold value; and performing an optical flow refinement process for obtaining a final inter prediction for the sample value in the current block, when it is determined that the optical flow refinement process should be performed.

公开(公告)号：US20210337211A1

公开(公告)日：2021-10-28

申请号：US17370151

申请日：2021-07-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/159 ,  H04N19/61 ,  H04N19/139 ,  H04N19/105 ,  H04N19/117

Abstract: The present disclosure provides a coding method, wherein the coding includes decoding or encoding, and the method comprises determining whether a current coding unit is predicted by application of combined inter-intra prediction (CIIP); and in response to determining that the current coding unit is predicted by application of CIIP, setting a boundary strength of a boundary of the current coding unit to a first value.

公开(公告)号：US20210314563A1

公开(公告)日：2021-10-07

申请号：US17346005

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/11 ,  H04N19/167 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/186

Abstract: Devices and methods for Intra prediction are provided. The method includes: parsing a bitstream, wherein the bitstream includes indication information to indicate whether a closest neighboring reference line to the current block is used for an intra prediction; determining an intra prediction mode of the current block is not Planar mode when the closest neighboring reference line to the current block is not used for the intra prediction; and obtaining an index indicating which intra prediction mode in a set of most probable modes is used for the intra prediction mode of the current block when the intra prediction mode of the current block is not Planar mode. The method can improve the efficiency to determine the intra prediction mode of the current block.