公开(公告)号：US20220210403A1

公开(公告)日：2022-06-30

申请号：US17598151

申请日：2020-04-07

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/126 ,  H04N19/132 ,  H04N19/139 ,  H04N19/17 ,  H04N19/30 ,  H04N19/70

Abstract: According to the disclosure of the present document, scaling list data and scaling list-related information may be hierarchically signaled, thereby enabling a reduction in data volume to be signaled for video/image coding and an increase in coding efficiency.

公开(公告)号：US20220191500A1

公开(公告)日：2022-06-16

申请号：US17555837

申请日：2021-12-20

Applicant: LG Electronics Inc.

Inventor： Junghak NAM ,  Moonmo KOO ,  Jaehyun LIM ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/13 ,  H04N19/18 ,  H04N19/176

Abstract: An image decoding method, according to the present document, comprises a step of generating residual samples for a current block on the basis of residual information, wherein the residual samples are generated on the basis of information on a transform kernel set and transform coefficients for the current block, the transform coefficients are derived on the basis of the residual information, and the information on the transform kernel set represents a transform kernel set to be applied to the current block from among transform kernel set candidates. At least one bin from among bins of a bin string of the information on the transform kernel set is derived on the basis of context coding, and the context coding is performed on the basis of at least one context model.

公开(公告)号：US20220182681A1

公开(公告)日：2022-06-09

申请号：US17442358

申请日：2020-03-24

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Jongyeul SUH ,  Jaehyun LIM ,  Seunghwan KIM

IPC: H04N19/82 ,  H04N19/176 ,  H04N19/105 ,  H04N19/70

Abstract: According to the disclosure of the present document, an image/video coding procedure may be performed on the basis of a sub-picture partitioning structure, and encoded image/video information may include individual information on each of subpictures. In addition, output sub-picture sets, each including sub-pictures, may be used for encoding or decoding of an image/video, whereby the overall image/video compression efficiency can be improved and the subjective/objective visual quality can be improved.

公开(公告)号：US20220174316A1

公开(公告)日：2022-06-02

申请号：US17677602

申请日：2022-02-22

Applicant: LG ELECTRONICS INC.

Inventor： Jangwon CHOI ,  Seunghwan KIM ,  Jin HEO ,  Jungah CHOI ,  Sunmi YOO

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

Abstract: According to one embodiment of the present document, in a matrix-based intra prediction (MIP) process, the MIP process can be performed regardless of requirements related to the forms of blocks, and MIP performance efficiency can be increased.

公开(公告)号：US20220166968A1

公开(公告)日：2022-05-26

申请号：US17438567

申请日：2019-11-14

Applicant: LG Electronics Inc.

Inventor： Jangwon CHOI ,  Jaehyun LIM ,  Jin HEO ,  Ling LI ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/593 ,  H04N19/132 ,  H04N19/167

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: obtaining reference line index information and prediction information for a current block; determining an intra prediction mode of the current block on the basis of the prediction information; deriving a reference sample of the current block on the basis of the intra prediction mode and the reference line index information; and generating a prediction sample of the current block on the basis of the reference sample, wherein the intra prediction mode includes a non-directional intra prediction mode, and the reference sample is derived from among surrounding samples of the current block on the basis of the non-directional intra prediction mode and the reference line index information.

公开(公告)号：US20220159266A1

公开(公告)日：2022-05-19

申请号：US17592771

申请日：2022-02-04

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/52 ,  H04N19/91

Abstract: A picture decoding method performed by a decoding apparatus according to the present disclosure includes obtaining motion prediction information from bitstream, generating an affine MVP candidate list including affine MVP candidates for a current block, deriving CPMVPs for respective CPs of the current block based on one of the affine MVP candidates included in the affine MVP candidate list, deriving the CPMVDs for the CPs of the current block based on information on CPMVDs for each of the CPs included in the obtained motion prediction information, deriving CPMVs for the CPs of the current block based on the CPMVPs and the CPMVDs, deriving prediction samples for the current block based on the CPMVs, and generating reconstructed samples for the current block based on the derived prediction samples.

公开(公告)号：US20220159239A1

公开(公告)日：2022-05-19

申请号：US17442270

申请日：2020-03-23

Applicant: LG Electronics Inc.

Inventor： Jangwon CHOI ,  Jin HEO ,  Seunghwan KIM ,  Jaehyun LIM ,  Ling LI

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

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 intra prediction types; deriving a first intra prediction mode for a neighboring block to the left of the current block; deriving a second intra prediction mode for a neighboring block above the current block; constructing an intra prediction mode candidate list of the current block on the basis of the first intra prediction mode and the second intra prediction mode; 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：US20220132115A1

公开(公告)日：2022-04-28

申请号：US17570284

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/132 ,  H04N19/13 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

Abstract: An image decoding method, according to the present disclosure, enables: acquiring, from a bitstream, image information including prediction mode information and adaptive loop filter (ALF) information including alternative filter information for a chroma component of a current block; deriving prediction samples for the current block on the basis of the prediction mode information; generating reconstructed samples on the basis of the prediction samples; and generating modified reconstructed samples for the chroma component of the current block on the basis of the alternative filter information.

公开(公告)号：US20220132114A1

公开(公告)日：2022-04-28

申请号：US17570247

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM

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

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：US20220116632A1

公开(公告)日：2022-04-14

申请号：US17561409

申请日：2021-12-23

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/186 ,  H04N19/109 ,  H04N19/159 ,  H04N19/172 ,  H04N19/96

Abstract: According to a disclosure of the present document, image information including prediction mode information and information associated with luma mapping with chroma scaling (LMCS) is acquired from a bitstream, wherein the image information includes LMCS adaptation parameter sets (APSs), and by limiting the range of APS ID information included in the LMCS APSs, a memory used in a LMCS procedure may be reduced (limited).