公开(公告)号：US20230276065A1

公开(公告)日：2023-08-31

申请号：US17916260

申请日：2021-03-31

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seung Hwan KIM ,  Seethal PALURI

IPC: H04N19/46 ,  H04N19/172 ,  H04N19/105 ,  H04N19/119 ,  H04N19/167 ,  H04N19/82

CPC classification number: H04N19/46 ,  H04N19/172 ,  H04N19/105 ,  H04N19/119 ,  H04N19/167 ,  H04N19/82

Abstract: Provided is an image encoding/decoding method and apparatus. The image decoding method comprises obtaining subpicture information from a bitstream, deriving one or more subpictures in a current picture based on the subpicture information, and decoding a current subpicture in the current picture based on the subpicture information. The subpicture information may comprise a first flag specifying whether each of the one or more subpictures is treated as a picture, and, based on the bitstream including at least one first layer referring to a current layer including the current picture, the first flag for the first subpicture included in a first layer and corresponding to the current subpicture, and the first flag for the current subpicture have the same value.

公开(公告)号：US20230239463A1

公开(公告)日：2023-07-27

申请号：US18127257

申请日：2023-03-28

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry Hendry ,  Jie Zhao ,  Seunghwan Kim

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding device according to this document comprises the steps of: parsing prediction weighted table syntax from a bitstream; parsing information on the number of reference pictures in a reference picture list from the prediction weighted table syntax; deriving weights for weighted prediction on the basis of the information on the number of reference pictures; deriving prediction samples of a current block by performing weighted prediction for the current block on the basis of the weights; and reconstructing a current picture on the basis of the prediction samples, wherein the prediction weighted table syntax may be parsed from a picture header of the bitstream.

公开(公告)号：US20230217015A1

公开(公告)日：2023-07-06

申请号：US18120637

申请日：2023-03-13

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method executed by a video decoding apparatus according to the present document comprises the steps of: parsing a flag associated with weighted prediction from a bitstream; on the basis of the flag, parsing a prediction weighted table syntax from the bitstream; and on the basis of the prediction weighted table syntax, executing a weighted prediction on a current block in a current picture to reconstruct the current picture, wherein on the basis of the value of the flag being 1, the prediction weighted table syntax may be parsed from a picture header of the bitstream, and on the basis of the value of the flag being 0, the prediction weighted table syntax may be parsed from a slice header of the bitstream.

公开(公告)号：US20230156180A1

公开(公告)日：2023-05-18

申请号：US17916371

申请日：2021-03-26

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seung Hwan KIM ,  Seethal PALURI ,  Jie ZHAO

IPC: H04N19/102 ,  H04N19/70 ,  H04N19/169

CPC classification number: H04N19/102 ,  H04N19/70 ,  H04N19/1883

Abstract: An image encoding/decoding method and apparatus for signaling decoded picture buffer (DPB) related information and profile tier level (PTL) related information and a method of transmitting a bitstream are provided. The image decoding method according to the present disclosure may comprise obtaining first information indicating the number of one or more decoded picture buffer (DPB) parameter syntax structures in a video parameter set (VPS), obtaining the one or more DPB parameter syntax structures from the VPS based on the first information, obtaining second information between one or more multi-layer output layer sets (OLSs) and the one or more DPB parameter syntax structures from the VPS based on the first information, selecting a DPB parameter syntax structure that applies to a current OLS based on the second information, and processing the current OLS based on the selected DPB parameter syntax structure.

公开(公告)号：US20230100733A1

公开(公告)日：2023-03-30

申请号：US17858707

申请日：2022-07-06

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/70 ,  H04N19/176 ,  H04N19/137 ,  H04N19/51 ,  H04N19/46

Abstract: According to the present document, a video decoding method performed by a video decoding apparatus may comprise the steps of: parsing a first flag and a second flag from a bitstream, wherein the first flag is related to whether weighted prediction is applied to slices referring to a picture parameter set, and the second flag is related to whether information relating to the weighted prediction exists in a picture header; parsing a prediction weighted table syntax from the picture header based on the first flag and the second flag; generating prediction samples for a current block in a current picture based on syntax elements within the prediction weighted table syntax; generating residual samples based on residual information; and generating reconstructed samples based on the prediction samples and the residual samples, wherein the second flag is parsed from the picture parameter set based on the first flag.

公开(公告)号：US20230062754A1

公开(公告)日：2023-03-02

申请号：US17954151

申请日：2022-09-27

Applicant: LG ELECTRONICS INC

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seung Hwan KIM

IPC: H04N19/136 ,  H04N19/187 ,  H04N19/70

Abstract: An image encoding/decoding method and apparatus for signaling PTL related information through a VPS and a recording medium storing a bitstream are provided. An image decoding method may comprise obtaining first information indicating the number of profile_tier_level (PTL) syntax structures in a video parameter set (VPS), obtaining PTL syntax structures in the VPS based on the first information, determining whether a total number of output layer sets (OLSs) specified by the VPS is equal to the number of PTL syntax structures in the VPS, and deriving mapping information between the OLSs and the PTL syntax structures respectively applied to the OLSs based on the determination.

公开(公告)号：US20230029653A1

公开(公告)日：2023-02-02

申请号：US17780333

申请日：2020-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/119 ,  H04N19/70 ,  H04N19/174 ,  H04N19/196 ,  H04N19/167

Abstract: In a method for decoding an image by a decoding apparatus according to the present disclosure, a current picture is configured to include a single slice, on the basis of a flag indicating whether information on a subpicture exists and a flag indicating whether the subpicture includes a single slice.

公开(公告)号：US20230016701A1

公开(公告)日：2023-01-19

申请号：US17623377

申请日：2020-06-24

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/124 ,  H04N19/172 ,  H04N19/70 ,  H04N19/186

Abstract: A method for decoding an image performed by a decoding apparatus, according to the present document, comprises the steps of: obtaining image information; and generating a reconstructed picture on the basis of the image information.

公开(公告)号：US20220417564A1

公开(公告)日：2022-12-29

申请号：US17777370

申请日：2020-11-17

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/82 ,  H04N19/136 ,  H04N19/132 ,  H04N19/103 ,  H04N19/172 ,  H04N19/117 ,  H04N19/70 ,  H04N19/167

Abstract: According to the embodiments of the present document, information necessary to control in-loop filtering performed across virtual boundaries can be efficiently signaled by a coding device. In one example, information related to whether in-loop filtering is available across virtual boundaries can be signaled.

公开(公告)号：US20220400291A1

公开(公告)日：2022-12-15

申请号：US17777265

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/82 ,  H04N19/18 ,  H04N19/103 ,  H04N19/132 ,  H04N19/117 ,  H04N19/70 ,  H04N19/167 ,  H04N19/176 ,  H04N19/61

Abstract: In a decoding method performed by a decoding apparatus according to embodiments of the present document, whether signaling of information related to virtual boundaries is present in a sequence parameter set (SPS) or picture header information may be determined based on a virtual boundaries enabled flag.