公开(公告)号：US20180098074A1

公开(公告)日：2018-04-05

申请号：US15560651

申请日：2015-12-03

Applicant: LG Electronics Inc.

Inventor： Jin HEO ,  Yongjoon JEON ,  Sunmi YOO ,  Eunyong SON ,  Junghak NAM

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/107

CPC classification number: H04N19/159 ,  H04N19/107 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593

Abstract: In the present invention, a method for processing an image on the basis of an intra prediction mode and an apparatus therefor are disclosed. Particularly, the method for processing an image on the basis of an intra prediction mode may comprise the steps of: partitioning a block to be processed, on the basis of an intra prediction mode of the block to be processed; and performing intra prediction for the split block to be processed, wherein the direction in which the block to be processed is split is perpendicular to the prediction direction of the intra prediction mode of the block to be processed.

公开(公告)号：US20180091810A1

公开(公告)日：2018-03-29

申请号：US15560101

申请日：2016-03-22

Applicant: LG Electronics Inc.

Inventor： Eunyong SON ,  Seungwook PARK ,  Yongjoon JEON ,  Moonmo KOO ,  Jin HEO ,  Sunmi YOO

IPC: H04N19/105 ,  H04N19/109 ,  H04N19/115 ,  H04N19/96 ,  H04N19/13

CPC classification number: H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/115 ,  H04N19/13 ,  H04N19/96

Abstract: The present invention relates to a method and a device for decoding a bitstream for a video signal, the method comprising the steps of: acquiring, from the bitstream, type number information and type information for a plurality of CTBs; acquiring, from the bitstream, type indication information for a current CTB among the plurality of CTBs; determining the size of the current CTB on the basis of a CTB type indicated by the type indication information; determining one or more coding blocks within the current CTB on the basis of the determined size of the current CTB and the determined minimum size of the coding block; acquiring, from the bitstream, prediction mode information with respect to each of the one or more coding blocks; and reconstructing a current coding block among the one or more coding blocks on the basis of prediction mode information related to the current coding block.

公开(公告)号：US20250159180A1

公开(公告)日：2025-05-15

申请号：US19021641

申请日：2025-01-15

Applicant: LG Electronics Inc.

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

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: deriving a context model for a sign flag of a current residual coefficient of a current block; and decoding the sign flag on the basis of the context model, wherein the context model for the sign flag is derived on the basis of a sign flag of a residual coefficient decoded before the current residual coefficient in the current block.

公开(公告)号：US20250071276A1

公开(公告)日：2025-02-27

申请号：US18935072

申请日：2024-11-01

Applicant: LG Electronics Inc.

Inventor： Sunmi YOO ,  Jungah CHOI ,  Jangwon CHOI

IPC: H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/60 ,  H04N19/70

Abstract: According to the disclosure of the present document, transform skip availability information and palette availability information are signaled via a sequence parameter set (SPS), and transform skip- and/or palette coding-related information can be effectively parsed/signaled on the basis of at least one of the transform skip availability information and the palette availability information. Accordingly, bits that need to be signaled for video/image coding can be reduced, and coding efficiency can be improved.

公开(公告)号：US20250063180A1

公开(公告)日：2025-02-20

申请号：US18724653

申请日：2022-12-30

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Hyeongmoon JANG ,  Junghak NAM ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

Abstract: According to the present disclosure, an image decoding method performed by a decoding device includes the steps of acquiring image information including prediction-related information from a bitstream; deriving an intra prediction mode with respect to a current block on the basis of the prediction-related information; generating prediction samples with respect to the current block on the basis of the intra prediction mode with respect to the current block; and generating reconstruction samples with respect to the current block on the basis of the prediction samples with respect to the current block, wherein the intra prediction mode is derived on the basis of whether an upper neighboring block of the current block exists in the same coding tree unit (CTU) as the current block.

公开(公告)号：US20240414328A1

公开(公告)日：2024-12-12

申请号：US18702283

申请日：2022-10-21

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG ,  Jangwon CHOI

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

Abstract: According to the present disclosure, an image decoding method performed by a decoding apparatus comprises the steps of: receiving a bitstream including prediction-related information; configuring a list of MPMs including intra prediction mode candidates for a current block; decoding remaining mode information related to remaining intra prediction modes other than the intra prediction mode candidates included in the list of MPMs; deriving an intra prediction mode of the current block on the basis of the remaining mode information; generating prediction samples for the current block on the basis of the intra prediction mode of the current block; and generating reconstructed samples for the current block on the basis of the prediction samples for the current block, wherein on the basis that DIMD mode or TIMD for the current block can be derived, a plurality of intra prediction modes are derived on the basis of the remaining mode information.

公开(公告)号：US20240380884A1

公开(公告)日：2024-11-14

申请号：US18285957

申请日：2022-04-08

Applicant: LG Electronics Inc.

Inventor： Nae Ri PARK ,  Jaehyun LIM ,  Sunmi YOO ,  Jung Hak NAM ,  Hyeong Moon JANG ,  Jangwon CHOI ,  Seung Hwan KIM

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

Abstract: An image encoding/decoding method and apparatus are provided. The image decoding method is performed by the image decoding apparatus and comprises generating a first prediction sample for a current block based on a first intra prediction mode, generating a second prediction sample for the current block based on a second intra prediction mode, and generating a prediction block for the current block based on the first prediction sample and the second prediction sample. The prediction block may be generated by respectively applying a first weight and a second weight to the first prediction sample and the second prediction sample.

公开(公告)号：US20240373022A1

公开(公告)日：2024-11-07

申请号：US18778196

申请日：2024-07-19

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/124 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/184 ,  H04N19/60 ,  H04N19/70

Abstract: A method by which a decoding device decodes an image, according to the present invention, 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 restored picture on the basis of the residual sample for the current block.

公开(公告)号：US20240283937A1

公开(公告)日：2024-08-22

申请号：US18590546

申请日：2024-02-28

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jangwon CHOI ,  Jin HEO

IPC: H04N19/132 ,  H04N19/122 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/132 ,  H04N19/122 ,  H04N19/176 ,  H04N19/61

Abstract: A method for decoding an image by a decoding apparatus according to the present invention comprises the steps of: deriving predicted samples by performing prediction on a current block; determining whether the current block is to be divided, on the basis of a size and a maximum transform size of the current block; when the current block is determined to be divided, dividing the current block into transform blocks; deriving transform coefficients of the transform blocks; deriving residual samples by performing an inverse transform procedure for the transform coefficients; and generating a reconstructed picture on the basis of the residual samples and the predicted samples, wherein, when the size of the current block is larger than the maximum transform size, the current block is determined to be divided.

公开(公告)号：US20240275957A1

公开(公告)日：2024-08-15

申请号：US18644829

申请日：2024-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jaeho LEE ,  Jangwon CHOI ,  Jungdong SEO ,  Jin HEO

IPC: H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: A method by which a decoding device performs image decoding, according to the present invention, comprises the steps of: deriving an intra prediction mode of a current block; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving reference samples for prediction of a target sample among the neighboring samples on the basis of the position of the target sample of the current block and the prediction angle of the intra prediction mode; determining an interpolation filter for the target sample; and deriving the prediction sample of the target sample on the basis of the interpolation filter and the reference samples.