公开(公告)号：US12120299B2

公开(公告)日：2024-10-15

申请号：US17795071

申请日：2021-01-25

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: According to the disclosure of this document, it is possible to derive a residual sample by applying an adaptive color transform (ACT) to a current block on the basis of ACT-related information, and at this time, the residual sample is clipped and derived on the basis of a clipping range, wherein the clipping range is determined on the basis of a bit depth.

公开(公告)号：US12113992B2

公开(公告)日：2024-10-08

申请号：US18135291

申请日：2023-04-17

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/30 ,  H04N19/124 ,  H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

CPC classification number: H04N19/30 ,  H04N19/124 ,  H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

Abstract: According to the disclosure of the present document, scaling list data transferred from an adaptation parameter set (APS) can be signaled through a hierarchical structure, and restrictions are placed on the scaling list data transferred from the APS, whereby the amount of data to be signaled for video/image coding can be reduced, and easiness in implementation can be provided.

公开(公告)号：US20240333944A1

公开(公告)日：2024-10-03

申请号：US18737596

申请日：2024-06-07

Applicant: LG ELECTRONICS INC.

Inventor： Jungah Choi ,  Jin Heo ,  Sunmi Yoo ,  Jangwon Choi ,  Jaehyun Lim ,  Seunghwan Kim

IPC: H04N19/18 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/18 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: A video decoding method performed by a decoding apparatus comprises the steps of: acquiring, from a bitstream, residual information for a current transform block, wherein the residual information includes at least one of information indicating a level value of a target transform coefficient within the current transform block or information indicating a residual level value; based on a neighboring transform coefficient of the target transform coefficient, deriving a rice parameter for at least one of the information indicating the level value of the target transform coefficient or the information indicating the residual level value; based on the rice parameter, deriving a bin string for at least one of the information indicating the level value of the target transform coefficient or the information indicating the residual level value; and based on the bin string, deriving the level value of the target transform coefficient.

公开(公告)号：US12101509B2

公开(公告)日：2024-09-24

申请号：US18101335

申请日：2023-01-25

Applicant: LG Electronics Inc.

Inventor： Moonmo Koo ,  Hyeongmoon Jang ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/61 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186

Abstract: An image decoding method according to the present document comprises the steps of: updating an intra-prediction mode of a chroma block on the basis of an intra-prediction mode of a luma block corresponding to the chroma block on the basis of the intra-prediction mode of the chroma block being a cross-component linear model (CCLM) mode; and determining a LFNST set including LFNST matrixes on the basis of the updated intra-prediction mode, wherein the updated intra-prediction mode is derived as an intra-prediction mode corresponding to a specific position in the luma block, and the updated intra-prediction mode is updated as an intra-DC mode on the basis of the intra-prediction mode, that corresponds to the specific position, being an intra-block copy (IBC) mode.

公开(公告)号：US12101480B2

公开(公告)日：2024-09-24

申请号：US17779487

申请日：2020-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

Abstract: A method by which a decoding apparatus decodes an image, according to the present disclosure, can signal slice-associated information on the basis of a flag related to whether there is sub-picture information and a flag related to whether a sub-picture includes a single slice.

公开(公告)号：US12101464B2

公开(公告)日：2024-09-24

申请号：US17441841

申请日：2020-03-18

Applicant: LG Electronics Inc.

Inventor： Jangwon Choi ,  Jin Heo ,  Seunghwan Kim ,  Jaehyun Lim ,  Ling Li

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

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A method for decoding an image by a decoding device according to the present document comprises the steps of: receiving prediction-related information of a current block; deriving an intra prediction type of the current block on the basis of the prediction-related information; forming an intra prediction mode candidate list of the current block on the basis of intra prediction modes of blocks neighboring the current block; deriving an intra prediction mode of the current block on the basis of the intra prediction mode candidate list; and deriving reference samples of the current block on the basis of the intra prediction type and the intra prediction mode, and deriving a prediction sample on the basis of the reference samples.

公开(公告)号：US12096011B2

公开(公告)日：2024-09-17

申请号：US17598123

申请日：2020-04-07

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/30 ,  H04N19/124 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18

CPC classification number: H04N19/30 ,  H04N19/124 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18

Abstract: According to a disclosure of the present document, scaling list data and scaling list-related information may be hierarchically signaled, and through same, the amount of data which must be signaled for video/image coding may be reduced, and coding efficiency may be increased.

公开(公告)号：US12088814B2

公开(公告)日：2024-09-10

申请号：US17797924

申请日：2021-02-05

Applicant: LG Electronics Inc.

Inventor： Jungah Choi ,  Sunmi Yoo ,  Jin Heo ,  Jangwon Choi ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/70

Abstract: A method, performed by a decoding device, for decoding an image according to the present document comprises the steps of: acquiring residual information of a current block; deriving residual samples of the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the residual samples.

公开(公告)号：US20240298034A1

公开(公告)日：2024-09-05

申请号：US18605477

申请日：2024-03-14

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Jie Zhao ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/159 ,  H04N19/169 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/70 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/1887 ,  H04N19/82

Abstract: According to the disclosure of the present document, an image decoding method performed by a decoding device comprises the steps of: acquiring, through a bitstream, image information including prediction mode information and residual information; deriving a prediction mode of a current block on the basis of the prediction mode information; deriving prediction samples on the basis of the prediction mode; deriving residual samples on the basis of the residual information; generating reconstruction samples on the basis of the prediction samples and the residual samples; deriving filter coefficients for an adaptive loop filter (ALF) procedure for the reconstruction samples; and generating modified reconstruction samples on the basis of the reconstruction samples and the filter coefficients, wherein the image information includes a first adaptation parameter set (APS) including an ALF data field, and the ALF data field includes ALF parameters used to derive the filter coefficients.

公开(公告)号：US12081805B2

公开(公告)日：2024-09-03

申请号：US17777265

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

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

CPC classification number: H04N19/82 ,  H04N19/103 ,  H04N19/117 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61 ,  H04N19/70

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.