公开(公告)号：US20230171419A1

公开(公告)日：2023-06-01

申请号：US17922718

申请日：2021-05-17

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Junghak NAM ,  Hyeongmoon JANG

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/174 ,  H04N19/172

CPC classification number: H04N19/46 ,  H04N19/70 ,  H04N19/174 ,  H04N19/172

Abstract: According to the disclosure of the present document, slices included in a current picture are decoded, a picture output flag for the current picture is derived after decoding of all the slices in the current picture is completed, and an output for the current picture may be determined on the basis of the picture output flag. The current picture may be displayed as “not needed for output” on the basis of the value of the picture output flag being 0, and the current picture may be displayed as “needed for output” on the basis of the value of the picture output flag being 1.

公开(公告)号：US20230164334A1

公开(公告)日：2023-05-25

申请号：US17918081

申请日：2021-04-12

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY

IPC: H04N19/30 ,  H04N19/172 ,  H04N19/70 ,  H04N19/107 ,  H04N19/593

CPC classification number: H04N19/30 ,  H04N19/172 ,  H04N19/70 ,  H04N19/107 ,  H04N19/593

Abstract: An image decoding method performed by a decoding device according to the present disclosure is characterized by comprising the steps of: acquiring a bitstream for a Coded Video Sequence (CVS) including a Coded Video Sequence Start (CVSS) Access Unit (AU); deriving image information about the current picture of the CVSS AU on the basis of the bitstream; and decoding the current picture on the basis of the image information, wherein the CVSS AU only includes a Picture Unit (PU) for an independent layer 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：US20230144371A1

公开(公告)日：2023-05-11

申请号：US17915313

申请日：2021-03-30

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY

IPC: H04N19/423 ,  H04N19/70 ,  H04N19/172 ,  H04N19/184

CPC classification number: H04N19/423 ,  H04N19/70 ,  H04N19/172 ,  H04N19/184

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: obtaining image information including HRD-related information relating to a target OLS, wherein the target OLS is one of OLSs including a plurality of layers; determining whether an HRD parameter syntax structure relating to the target OLS exists, on the basis of the HRD-related information; deriving an HRD parameter syntax structure relating to the target OLS on the basis of a result of the determination; performing a DPB management process relating to a DPB on the basis of the HRD parameter syntax structure for the target OLS; and decoding a current picture on the basis of the DPB.

公开(公告)号：US20230143648A1

公开(公告)日：2023-05-11

申请号：US17916724

申请日：2021-04-05

Applicant: LG ELECTRONICS INC.

Inventor： Jung Hak NAM ,  Hendry HENDRY ,  Hyeong Moon JANG ,  Seung Hwan KIM

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/174

CPC classification number: H04N19/159 ,  H04N19/176 ,  H04N19/174

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method may comprise determining whether an inter slice type is allowed for a current picture including a current block, determining whether an intra slice type is allowed for the current picture, based on the inter slice type being allowed for the current picture, and decoding the current block based on a slice type allowed for the current picture. Whether the inter slice type is allowed for the current picture may be determined based on a picture type of the current picture and whether a current layer including the current picture is able to use inter-layer prediction.

公开(公告)号：US20230141607A1

公开(公告)日：2023-05-11

申请号：US17915235

申请日：2021-03-26

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY

IPC: H04N19/70 ,  H04N19/187 ,  H04N19/30 ,  H04N19/105 ,  H04N19/467

CPC classification number: H04N19/70 ,  H04N19/187 ,  H04N19/30 ,  H04N19/105 ,  H04N19/467

Abstract: Disclosed herein are an image encoding/decoding method and apparatus for signaling hypothetical reference decoder (HRD) related parameters, and a method of transmitting a bitstream. An image decoding method may comprise obtaining first information specifying the number of one or more hypothetical reference decoder (HRD) parameter syntax structures in a video parameter set (VPS), obtaining the one or more HRD parameter syntax structures from the VPS based on the first information, obtaining second information on mapping between one or more multi-layer output layer sets (OLSs) and the one or more HRD parameter syntax structures from the VPS based on the first information, selecting a HRD parameter syntax structure that applies to a current OLS based on the second information, and processing the current OLS based on the selected HRD parameter syntax structure.

公开(公告)号：US20230136821A1

公开(公告)日：2023-05-04

申请号：US17918439

申请日：2021-04-07

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY

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

Abstract: According to the disclosure of the present document, image information acquired through a bitstream may include a picture header including information related to a reference picture list, the picture header may include a non-reference picture flag related to whether a current picture is not used as a reference picture, and the non-reference picture flag may be included in a fixed location relative to a starting point of the picture header in the picture header. As a result, it is possible to derive the effect of enhancing prediction performance and coding efficiency in a video/image coding.

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：US20230046583A1

公开(公告)日：2023-02-16

申请号：US17788247

申请日：2020-12-23

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY

IPC: H04N19/82 ,  G06T7/11 ,  G06T7/13 ,  H04N19/105 ,  H04N19/132 ,  H04N19/86 ,  H04N19/96

Abstract: An in-loop filtering procedure for improving the picture quality of a reconstructed image (video) can be performed. The in-loop filtering procedure can be also performed on a picture divided into sub pictures. According to embodiments of the present document, sub picture-related information and in-loop filtering-related information can be efficiently signaled.