公开(公告)号：US11284083B2

公开(公告)日：2022-03-22

申请号：US17353137

申请日：2021-06-21

Applicant: LG Electronics Inc.

Inventor： Ling Li ,  Jaehyun Lim ,  Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: A video decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: receiving a bitstream including information about merge data of a current block; checking mh intra flag information for mh intra prediction which is included in the information about the merge data; checking information about a merge triangle prediction on the basis of a checking result that a value of the mh intra flag information is related to checking the information about the merge triangle prediction included in the information about the merge data; deriving prediction samples for the current block on the basis of a result of checking the information about the merge triangle prediction; and generating a reconstructed picture on the basis of the prediction samples.

公开(公告)号：US11218733B2

公开(公告)日：2022-01-04

申请号：US17148970

申请日：2021-01-14

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/64 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91 ,  H04N19/513 ,  H04N19/61

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：US20210360231A1

公开(公告)日：2021-11-18

申请号：US17389810

申请日：2021-07-30

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Seunghwan Kim ,  Ling Li

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

Abstract: An image decoding method according to the present disclosure comprises deriving a first candidate intra prediction mode based on a first neighboring block of a current block; deriving a second candidate intra prediction mode based on a second neighboring block of the current block; constructing MPM (Most Probable Mode) list of the current block based on the first candidate intra prediction mode and the second candidate intra prediction mode; deriving an intra prediction mode for the current block based on the MPM list; and generating a prediction sample for the current block based on the intra prediction mode, wherein the first neighboring block is a left neighboring block located at the lowermost side among neighboring blocks adjacent to a left boundary of the current block, and wherein the second neighboring block is an upper neighboring block located at the rightmost side among neighboring blocks adjacent to an upper boundary of the current block.

公开(公告)号：US20210352321A1

公开(公告)日：2021-11-11

申请号：US17339809

申请日：2021-06-04

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/176 ,  H04N19/136

Abstract: A video decoding method according to the present document comprises the steps of: configuring an MPM list by deriving candidate intra prediction modes on the basis of a first neighboring block located on the left side and a second neighboring block located on the upper side with respect to the current block; deriving an intra prediction mode for the current block on the basis of the MPM list; generating prediction samples for the current block on the basis of the intra prediction mode; and generating a reconstructed picture for the current block on the basis of the prediction samples, wherein a first intra prediction mode of the first neighboring block and a second intra prediction mode of the second neighboring block are the same, wherein the candidate intra prediction modes including a DC mode are derived on the basis of a case where both the first intra prediction mode and the second intra prediction mode are the DC mode.

公开(公告)号：US11128857B2

公开(公告)日：2021-09-21

申请号：US16837857

申请日：2020-04-01

Applicant: LG ELECTRONICS INC.

Inventor： Jin Heo ,  Seunghwan Kim ,  Ling Li

IPC: H04B1/66 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: An image decoding method according to the present disclosure comprises deriving a first candidate intra prediction mode based on a first neighboring block of a current block; deriving a second candidate intra prediction mode based on a second neighboring block of the current block; constructing MPM (Most Probable Mode) list of the current block based on the first candidate intra prediction mode and the second candidate intra prediction mode; deriving an intra prediction mode for the current block based on the MPM list; and generating a prediction sample for the current block based on the intra prediction mode, wherein the first neighboring block is a left neighboring block located at the lowermost side among neighboring blocks adjacent to a left boundary of the current block, and wherein the second neighboring block is an upper neighboring block located at the rightmost side among neighboring blocks adjacent to an upper boundary of the current block.

公开(公告)号：US20210084305A1

公开(公告)日：2021-03-18

申请号：US17104082

申请日：2020-11-25

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/196

Abstract: A method for decoding a picture based on a cross-component linear model (CCLM) mode includes deriving neighboring luma reference samples of a luma block, deriving down-sampled neighboring luma reference samples, deriving a linear model parameter based on the down-sampled neighboring luma reference samples and the neighboring chroma reference samples, where the neighboring luma reference samples includes top neighboring luma reference samples, and left neighboring luma reference samples, and where when the top boundary of the luma block overlaps with a boundary of a coding tree unit (CTU), the number of the top neighboring luma reference samples used for deriving the down-sampled neighboring luma reference samples among the neighboring luma reference samples is less than that of the left neighboring luma reference samples used for deriving the down-sampled neighboring luma reference samples.

公开(公告)号：US20210076027A1

公开(公告)日：2021-03-11

申请号：US16953519

申请日：2020-11-20

Applicant: LG ELECTRONICS INC.

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

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

Abstract: According to the present disclosure, a video decoding method performed by a video decoding device includes parsing remaining intra prediction mode information for a current block, deriving neighboring samples of the current block, deriving MPM list including MPM candidates of the current block, deriving an intra prediction mode of the current block based on the remaining intra prediction mode information, wherein the intra prediction mode is one of remaining intra prediction modes excluding the MPM candidates, deriving a prediction sample of the current block based on the intra prediction mode and the neighboring samples, and deriving a reconstructed picture based on the prediction sample, wherein the remaining intra prediction mode information is coded through a truncated binary (TB) binarization process, and wherein a binarization parameter for the TB binarization process is 60.

公开(公告)号：US12267487B2

公开(公告)日：2025-04-01

申请号：US18644760

申请日：2024-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Ling Li ,  Jin Heo ,  Junghak Nam

IPC: H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176

Abstract: A method for decoding a video performed by a decoding device according to the present disclosure, comprises: a step for deriving a prediction mode of a neighboring block of a current block; a step for deriving an intra prediction mode candidate for configuring an MPM list on the basis of the derived prediction mode of the neighboring block; a step for configuring the MPM list on the basis of the derived intra prediction mode candidate; a step for determining an intra prediction mode for the current block on the basis of the configured MPM list; a step for deriving prediction samples for the current block on the basis of the determined intra prediction mode for the current block; and a step for generating a reconstructed picture on the basis of the prediction samples.

公开(公告)号：US20240406400A1

公开(公告)日：2024-12-05

申请号：US18805205

申请日：2024-08-14

Applicant: LG ELECTRONICS INC.

Inventor： Ling Li ,  Jaehyun Lim ,  Jin Heo ,  Junghak Nam

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82 ,  H04N19/96

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: receiving a bitstream including prediction information for a current block; deriving a chroma array type for the current block on the basis of a separate color plane flag indicating whether three color components are separately coded and a chroma format index indicating a chroma format sampling structure for the current block, which are included in the prediction information for the current block; deriving prediction samples for the current block on the basis of the derived chroma array type; and deriving reconstructed samples for the current block on the basis of the prediction samples.

公开(公告)号：US12143574B2

公开(公告)日：2024-11-12

申请号：US18371319

申请日：2023-09-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: A picture decoding method, performed by a decoding apparatus according to the present disclosure, comprises the steps of: when an intra-prediction mode of a chroma block is a cross-component linear model (CCLM) mode, deriving neighboring chroma reference samples with respect to the chroma block; deriving neighboring luma reference samples of a luma block corresponding to the chroma block and luma samples in the luma block; deriving down-sampled neighboring luma reference samples and downsampled luma samples by down sampling the neighboring luma reference samples and the luma samples, respectively; deriving a linear model parameter on the basis of the down-sampled neighboring luma reference samples and the neighboring chroma reference samples; generating prediction samples with respect to the chroma block on the basis of the linear model parameter and the down-sampled luma samples of the luma block; and reconstructing the chroma block on the basis of the prediction samples with respect to the chroma block.