公开(公告)号：US12088845B2

公开(公告)日：2024-09-10

申请号：US17740284

申请日：2022-05-09

Applicant: LG ELECTRONICS INC.

Inventor： Junghak Nam ,  Seunghwan Kim ,  Hyeongmoon Jang ,  Jaehyun Lim

IPC: H04N19/64 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

CPC classification number: H04N19/647 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

Abstract: An image decoding method performed by means of a decoding device according to the present invention comprises the steps of: obtaining first split information relating to a first target block; if the first split information indicates that the first target block is to be split, splitting the first target block into first sub-blocks; obtaining MPT split information relating to a second target block which is one of the first sub-blocks of the first target block; splitting the second target block into second sub-blocks on the basis of the MPT split information; and decoding the second sub-blocks, wherein the second sub-blocks are non-square blocks.

公开(公告)号：US12088830B2

公开(公告)日：2024-09-10

申请号：US18100781

申请日：2023-01-24

Applicant: LG ELECTRONICS INC.

Inventor： Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim ,  Moonmo Koo

IPC: H04N19/18 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/60 ,  H04N19/91

CPC classification number: H04N19/18 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/60 ,  H04N19/91

Abstract: An image information decoding method performed by means of a decoding device according to the present invention comprises the steps of: decoding a non-separable secondary transform (NSST) index from a bitstream if NSST is applied to a target block; decoding information relating to transform coefficients with respect to the target block from the bitstream on the basis of the decoded NSST index; and deriving the transform coefficients with respect to the target block on the basis of the decoded information relating to the transform coefficients, wherein the NSST index is decoded prior to the information relating to the transform coefficients with respect to the target block.

公开(公告)号：US12088812B2

公开(公告)日：2024-09-10

申请号：US17777241

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: In relation to an in-loop filtering procedure described in the present document, a virtual boundary is defined so as to further increase the subjective/objective visual quality of a restored picture and the in-loop filtering procedure can be applied across the virtual boundary. The virtual boundary can include, for example, a discontinuous edge such as a 360-degree image, a VR image, or picture in picture (PIP). For example, the virtual boundary can be at a predetermined appointed position, and the existence and/or the position thereof can be signaled. Embodiments of the present document present a method for efficiently signaling virtual boundary-related information.

公开(公告)号：US20240291984A1

公开(公告)日：2024-08-29

申请号：US18644627

申请日：2024-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

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

CPC classification number: H04N19/119 ,  H04N19/167 ,  H04N19/174 ,  H04N19/196 ,  H04N19/70

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：US12075050B2

公开(公告)日：2024-08-27

申请号：US17629597

申请日：2020-08-20

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: acquiring image information; and generating a reconstruction picture on the basis of the image information.

公开(公告)号：US12069254B2

公开(公告)日：2024-08-20

申请号：US18141159

申请日：2023-04-28

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/91

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/91

Abstract: According to the disclosure of the present disclosure, the index of an alternative filter is derived from ALF information, and an ALF procedure for a chroma component of a current block can be performed on the basis of the alternative filter.

公开(公告)号：US20240275973A1

公开(公告)日：2024-08-15

申请号：US18611275

申请日：2024-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/96

CPC classification number: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/96

Abstract: An image decoding method according to the present document can comprise the steps of: acquiring, from a bitstream, intra prediction mode information and an LFNST index; deriving, as a cross-component linear model (CCLM) mode, an intra prediction mode of a chroma block on the basis of the intra prediction mode information; changing the intra prediction mode of the chroma block from the CCLM mode to an intra prediction mode of a luma block corresponding to the chroma block; determining an LFNST set, including LFNST matrices, on the basis of the intra prediction mode of the luma block; selecting one of the LFNST matrices on the basis of the LFNST set and the LFNST index; and deriving transform coefficients for the chroma block on the basis of the selected LFNST matrix.

公开(公告)号：US12063368B2

公开(公告)日：2024-08-13

申请号：US18128132

申请日：2023-03-29

Applicant: LG Electronics Inc.

Inventor： Moonmo Koo ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N7/18 ,  G06F9/48 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N23/60

CPC classification number: H04N19/132 ,  G06F9/4812 ,  G06F9/4881 ,  H04N19/176 ,  H04N19/18 ,  H04N19/1883 ,  H04N19/60 ,  H04N23/60

Abstract: An image decoding method according to the present document comprises a step of deriving a corrected transform coefficient, wherein the step of deriving the corrected transform coefficient comprises the steps of: determining whether LFNST can be applied to the height and width of a divided sub-partition block when an ISP is applied to a current block; parsing a LFNST index when the LFNST can be applied; and deriving the corrected transform coefficient on the basis of the LFNST index and a LFNST matrix.

公开(公告)号：US12052424B2

公开(公告)日：2024-07-30

申请号：US18141782

申请日：2023-05-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/132 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding device according to the present document comprises the steps of: parsing a flag pertaining to a weighted prediction from a bitstream; parsing the syntax of a prediction weighted table from the bitstream based on the flag; performing a weighted prediction for the current block in the current picture based on the prediction weighted table syntax to generate prediction samples for the current block; generating residual samples based on residual information acquired from the bitstream; and generating reconstructed samples for the current block based on the prediction samples and the residual samples, wherein the prediction weighted table syntax can be parsed from the picture header of the bitstream based on the value of the flag being 1, and can be parsed from the slice header of the bitstream based on the value of the flag being 0.

公开(公告)号：US12041247B2

公开(公告)日：2024-07-16

申请号：US17637290

申请日：2020-08-20

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.