公开(公告)号：US20240064337A1

公开(公告)日：2024-02-22

申请号：US17766362

申请日：2020-10-05

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Jaehyun LIM ,  Seunghwan KIM ,  Mehdi SALEHIFAR

IPC: H04N19/70 ,  H04N19/18 ,  H04N19/176 ,  H04N19/132 ,  H04N19/172 ,  H04N19/136 ,  H04N19/124 ,  H04N19/61

CPC classification number: H04N19/70 ,  H04N19/18 ,  H04N19/176 ,  H04N19/132 ,  H04N19/172 ,  H04N19/136 ,  H04N19/124 ,  H04N19/61 ,  H04N19/186

Abstract: An image decoding method, according to the present document, comprises the steps of: determining whether to parse an MTS index for applying an MTS to the current block; deriving residual samples for the current block by applying the MTS to the current block on the basis of the MTS index; and generating a reconstructed picture on the basis of the residual samples, wherein the step of determining whether to parse the MTS index includes determining the tree type of the current block, the division type of the current block, and whether zero-out for the MTS has been performed in the current block.

公开(公告)号：US20240056594A1

公开(公告)日：2024-02-15

申请号：US18380071

申请日：2023-10-13

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/46 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: obtaining image information; and generating a reconstructed picture on the basis of the image information.

公开(公告)号：US20240056591A1

公开(公告)日：2024-02-15

申请号：US18278113

申请日：2022-04-12

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seunghwan KIM

IPC: H04N19/44 ,  H04N19/136 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/136 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus according to the disclosure of the present document may comprise the steps of: obtaining information related to decoder initialization from a bitstream, initializing a decoder on the basis of the information related to decoder initialization; and performing decoding after initializing the decoder, wherein the information related to decoder initialization includes one or more decoder initialization information sets, and the decoder initialization information set includes level id information and maximum value information of parameters for decoding a bitstream related to the level id information, the value of the level id information specifying a level related to the decoder initialization information set.

公开(公告)号：US20240048713A1

公开(公告)日：2024-02-08

申请号：US18377171

申请日：2023-10-05

Applicant: LG ELECTRONICS INC.

Inventor： Jungah CHOI ,  Sunmi YOO ,  Jaehyun LIM ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of: acquiring a block-based delta pulse code modulation (BDPCM) available flag about whether a BDPCM is available for a chroma block and a luma block; acquiring, on the basis of the BDPCM available flag, a BDPCM luma flag about whether to apply the BDPCM to the current luma block; and acquiring, on the basis of the BDPCM available flag, a BDPCM chroma flag about whether to apply the BDPCM to the current chroma blocks.

公开(公告)号：US20240048712A1

公开(公告)日：2024-02-08

申请号：US18374401

申请日：2023-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

Abstract: According to the disclosure of the present document, it is possible for various LMCS application cases to apply an LMCS procedure to a block having a dual tree structure. In addition, the coding performance of the block can be improved. According to the disclosure of the present document, resources required for the LMCS procedure can be reduced. Therefore, the complexity of the LMCS can be reduced and the video/image coding efficiency can be increased.

公开(公告)号：US20240031573A1

公开(公告)日：2024-01-25

申请号：US18369493

申请日：2023-09-18

Applicant: LG ELECTRONICS INC

Inventor： Moonmo KOO ,  Mehdi SALEHIFAR ,  Seunghwan KIM ,  Jaehyun LIM

IPC: H04N19/122 ,  H04N19/167 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/122 ,  H04N19/167 ,  H04N19/176 ,  H04N19/61

Abstract: The embodiments of the present disclosure provides a method and apparatus for video signal processing. A method for decoding an image signal according to an embodiment of the present disclosure may include determining an input length and an output length of a non-separable transform based on a height and a width of a current block; determining a non-separable transform matrix corresponding to the input length and the output length of a non-separable transform; and applying the non-separable transform matrix to coefficients by a number of the input length in the current block, wherein the height and the width of a current block is greater than or equal to 8, wherein, if each of the height and the width of a current block is equal to 8, the input length of the non-separable transform is determined as 8.

公开(公告)号：US20240022749A1

公开(公告)日：2024-01-18

申请号：US18230286

申请日：2023-08-04

Applicant: LG ELECTRONICS INC.

Inventor： Jungah CHOI ,  Sunmi YOO ,  Jaehyun LIM ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/46 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/46 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of: acquiring image information including a Block-based Delta Pulse Code Modulation (BDPCM) available flag; and generating a reconstructed picture on the basis of the image information, wherein the BDPCM available flag relates to whether BDPCM is available for chroma and luma blocks.

公开(公告)号：US20230396807A1

公开(公告)日：2023-12-07

申请号：US18235485

申请日：2023-08-18

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/132 ,  H04N19/18 ,  H04N19/176 ,  H04N19/124

CPC classification number: H04N19/70 ,  H04N19/30 ,  H04N19/132 ,  H04N19/18 ,  H04N19/176 ,  H04N19/124 ,  H04N19/174

Abstract: According to the disclosure of the present document, scaling list data delivered in an adaptation parameter set (APS) may be signaled through a hierarchical structure, and the amount of data that needs to be signaled for video/image coding may be reduced and implementation may be facilitated by placing limits on the scaling list data delivered in the APS.

公开(公告)号：US20230362406A1

公开(公告)日：2023-11-09

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

CPC classification number: 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：US20230345006A1

公开(公告)日：2023-10-26

申请号：US18217328

申请日：2023-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Mehdi SALEHIFAR ,  Seunghwan KIM

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

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: An image decoding method according to the present document can comprise the steps of: receiving flag information indicating whether a matrix-based intra prediction (MIP) is used with respect to a current block; receiving matrix-based intra prediction (MIP) mode information on the basis of the flag information; generating an intra prediction sample for the current block on the basis of the MIP mode information; and generating restoration samples for the current block on the basis of the intra prediction samples.