公开(公告)号：US20200236403A1

公开(公告)日：2020-07-23

申请号：US16841062

申请日：2020-04-06

Applicant: LG Electronics Inc.

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

IPC: H04N19/64 ,  H04N19/124 ,  H04N19/176 ,  H04N19/13 ,  H04N19/91 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure includes receiving a bitstream including residual information; deriving quantized transform coefficients for a current block based on the residual information included in the bitstream; deriving residual samples for the current block based on the quantized transform coefficients; and generating a reconstructed picture based on the residual samples for the current block.

公开(公告)号：US12301868B2

公开(公告)日：2025-05-13

申请号：US18524327

申请日：2023-11-30

Applicant: LG Electronics Inc.

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

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of deriving an intra prediction type for a current block from among intra prediction types; constituting an intra prediction mode candidate list of the current block on the basis of intra prediction modes of neighboring blocks of the current block; deriving an intra prediction mode of the current block on the basis of the intra prediction mode candidate list; and generating prediction samples of the current block on the basis of the intra prediction type and the intra prediction mode.

公开(公告)号：US12301867B2

公开(公告)日：2025-05-13

申请号：US18220646

申请日：2023-07-11

Applicant: LG Electronics Inc.

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

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/59 ,  H04N19/70

Abstract: An image decoding method includes obtaining image information including residual information and prediction-related information through a bitstream, deriving transform coefficients based on the residual information, generating residual samples for a current block based on the transform coefficients, deriving an intra prediction mode for the current block based on the prediction-related information, generating prediction samples for the current block based on the intra prediction mode, generating reconstructed samples for the current block based on the prediction samples and the residual samples, wherein the image information includes flag information related to whether an intra prediction mode type for the current block is a matrix-based intra prediction (MIP), wherein the intra prediction mode type for the current block is determined as the MIP based on the flag information, and wherein the prediction samples for the current block are generated based on MIP samples.

公开(公告)号：US12273560B2

公开(公告)日：2025-04-08

申请号：US18422857

申请日：2024-01-25

Applicant: LG Electronics Inc.

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

IPC: H04N11/02 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30 ,  H04N19/593 ,  H04N19/70

Abstract: An image decoding method according to this disclosure includes receiving image information including intra matrix-based intra prediction (MIP) flag information related to whether an MIP is applied to a current block through a bitstream, deriving an intra prediction type for the current block as the MIP based on the intra MIP flag information, generating intra prediction samples for the current block based on the MIP, and generating reconstructed samples for the current block based on the intra prediction samples.

公开(公告)号：US12267528B2

公开(公告)日：2025-04-01

申请号：US17801492

申请日：2021-02-25

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/11 ,  H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: acquiring residual information about the 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：US12238287B2

公开(公告)日：2025-02-25

申请号：US18375004

申请日：2023-09-29

Applicant: LG Electronics Inc.

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

IPC: H04N11/02 ,  H04N19/12 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: obtaining a dependent quantization available flag; obtaining a TSRC available flag, on the basis of the dependent quantization available flag; determining a residual coding syntax for a current block, on the basis of the TSRC available flag; obtaining residual information of the determined residual coding syntax for the current block; deriving a residual sample of the current block, on the basis of the residual information; and generating a reconstructed picture, on the basis of the residual sample, wherein the dependent quantization available flag is a flag regarding whether dependent quantization is available, the TSRC available flag is a flag regarding whether TSRC is available, and the TSRC available flag is obtained on the basis of the dependent quantization available flag having a value of 0.

公开(公告)号：US12200205B2

公开(公告)日：2025-01-14

申请号：US18377577

申请日：2023-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Jin Heo ,  Sunmi Yoo ,  Ling Li ,  Jangwon Choi ,  Jungah Choi

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593

Abstract: An image decoding method according to the present document derives a left mode, which is a candidate intra prediction mode for a left peripheral block of a current block, derives an upper mode, which is a candidate intra prediction mode for an upper peripheral block of the current block, constructs an MPM list on the basis of the left mode and the upper mode, derives an intra prediction mode of the current block on the basis of the MPM list, generates prediction samples of the current block on the basis of the intra prediction mode, generates a restoration picture of the current block on the basis of the prediction samples, and derives the left mode or the upper mode as one from among candidate intra prediction modes of the MPM list, on the basis of when the left mode and the upper mode are not the same and the left mode and the upper mode are respectively a planar mode and a DC mode.

公开(公告)号：US12200202B2

公开(公告)日：2025-01-14

申请号：US17428138

申请日：2020-02-21

Applicant: LG ELECTRONICS INC.

Inventor： Jangwon Choi ,  Jin Heo ,  Sunmi Yoo ,  Jungah Choi ,  Ling Li

IPC: H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70

Abstract: An image decoding method executed by a decoding apparatus according to the present document comprises the steps of: deriving an intra prediction type for the current block from among the intra prediction types; establishing an intra prediction mode candidate list for the current block by executing a process for establishing an intra prediction mode candidate list; selecting an intra prediction mode for the current block on the basis of the intra prediction mode candidate list; and generating prediction samples for the current block on the basis of the intra prediction type and intra prediction mode.

公开(公告)号：US12155830B2

公开(公告)日：2024-11-26

申请号：US18201700

申请日：2023-05-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/136 ,  H04N19/122 ,  H04N19/176 ,  H04N19/196

Abstract: A method for decoding a picture performed by a decoding apparatus according to the present disclosure includes receiving a bitstream including residual information, deriving a quantized transform coefficient for a current block based on the residual information included in the bitstream, deriving a transform coefficient from the quantized transform coefficient based on a dequantization process, deriving a residual sample for the current block by applying an inverse transform to the derived transform coefficient, and generating a reconstructed picture based on the residual sample for the current block.

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.