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：US12262011B2

公开(公告)日：2025-03-25

申请号：US18646405

申请日：2024-04-25

Applicant: LG ELECTRONICS INC.

Inventor： Ling Li ,  Jung Hak Nam

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include obtaining a current block by splitting an image, determining a prediction mode of the current block, generating an intra prediction block of the current block, based on the prediction mode of the current block being an intra prediction mode, generating a residual block of the current block, and reconstructing the current block based on the prediction block and the residual block of the current block.

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：US12184868B1

公开(公告)日：2024-12-31

申请号：US18242961

申请日：2023-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Ling Li ,  Seunghwan Kim ,  Jin Heo

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

Abstract: Disclosed are a method for decoding a video signal and a device therefore. More particularly, a method for decoding an image based on an intra prediction mode, may comprise the steps of: acquiring a most probable mode (MPM) flag for indicating whether an MPM is applied to a current block, the MPM representing a mode in which an intra prediction mode of the current block is induced from an intra predicted block neighboring the current block; configuring an MPM list, on the basis of whether intra prediction modes of a left neighboring block and an above neighboring block of the current block satisfy predefined conditions, if the MPM is applied to the current block; acquiring an MPM index for indicating, within the MPM list, a specific intra prediction mode; and generating a prediction block for the current block by using the intra prediction mode specified by the MPM index.

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：US12058318B2

公开(公告)日：2024-08-06

申请号：US18112259

申请日：2023-02-21

Applicant: LG Electronics Inc.

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: An image decoding method according to the present disclosure comprises the steps of: obtaining intra prediction type related information for a current block from a bit stream; deriving the intra prediction type of the current block based on the intra prediction type-related information; obtaining intra prediction mode-related information for the current block from the bitstream; configuring a most probable mode (MPM) list including candidate intra prediction modes for the current block based on neighboring blocks of the current block; deriving the intra prediction mode of the current block based on the MPM list and the intra prediction mode-related information; and generating a predicted block of the current block based on the intra prediction type and the intra prediction mode, wherein when the intra prediction type indicates the particular intra prediction type, the MPM index is parsed from the bit stream without parsing of an MPM flag.

公开(公告)号：US12003721B2

公开(公告)日：2024-06-04

申请号：US18209665

申请日：2023-06-14

Applicant: LG ELECTRONICS INC.

Inventor： Ling Li ,  Jung Hak Nam

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include obtaining a current block by splitting an image, determining a prediction mode of the current block, generating an intra prediction block of the current block, based on the prediction mode of the current block being an intra prediction mode, generating a residual block of the current block, and reconstructing the current block based on the prediction block and the residual block of the current block.

公开(公告)号：US11979608B2

公开(公告)日：2024-05-07

申请号：US17283906

申请日：2019-10-07

Applicant: LG Electronics Inc.

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

IPC: H04N11/02 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60

CPC classification number: H04N19/60 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18

Abstract: An image decoding method according to the present document comprises the steps of: receiving a bitstream including residual information; deriving a quantized transform coefficient for a current block on the basis of the residual information included in the bitstream; deriving a residual sample for the current block on the basis of the quantized transform coefficient; and generating a restoration picture on the basis of the residual sample for the current block, wherein the residual information includes position information for indicating the position of a transform coefficient, which is not the last 0 in a transform block, and the position information can be derived if a transform skip is not applied to the transform block.

公开(公告)号：US11889068B2

公开(公告)日：2024-01-30

申请号：US17964368

申请日：2022-10-12

Applicant: LG ELECTRONICS INC.

Inventor： Ling Li ,  Seunghwan Kim ,  Jin Heo

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: obtaining a reference sample line index of a current block and most probable mode (MPM)-related information; constructing an alternative MPM list on the basis of the reference sample line index; deriving an intra prediction mode of the current block on the basis of the alternative MPM list and the MPM-related information; and generating a predicted block of the current block on the basis of the intra prediction mode, wherein the alternative MPM list is constructed on the basis of an intra prediction mode of an upper adjacent block of the current block and an intra prediction mode of a left adjacent block of the current block.