公开(公告)号：US20240414357A1

公开(公告)日：2024-12-12

申请号：US18813296

申请日：2024-08-23

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

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：US20240414332A1

公开(公告)日：2024-12-12

申请号：US18697111

申请日：2022-09-29

Applicant: LG Electronics Inc.

Inventor： Jaehyun LIM ,  Chul Keun KIM

IPC: H04N19/117 ,  H04N19/60 ,  H04N19/70

Abstract: Provided are a feature encoding/decoding method and apparatus, and a computer-readable recording medium generated by the feature encoding method are provided. The feature decoding method according to the present disclosure may comprise the steps of: acquiring, from a bitstream, first feature information and filtering information regarding the first feature information; inversely transforming the first feature information; and deriving, on the basis of the filtering information, second feature information for the inversely transformed first feature information.

公开(公告)号：US20240414327A1

公开(公告)日：2024-12-12

申请号：US18697617

申请日：2022-09-30

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Jaehyun LIM ,  Hyeongmoon JANG ,  Seunghwan KIM

IPC: H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/132 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/503 ,  H04N19/593 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device includes: obtaining image information including prediction-related information from a bitstream; determining whether combined inter-picture merge and intra-picture prediction (CIIP) is applied to a current block, on the basis of the prediction-related information; deriving a prediction sample of the current block on the basis of it being determined that the CIIP is applied to the current block; and generating a reconstructed sample of the current block on the basis of the prediction sample, wherein the prediction sample of the current block is derived on the basis of an intra prediction sample and an inter prediction sample, wherein the intra prediction sample is derived on the basis of an intra prediction mode, wherein the intra prediction mode is derived on the basis of a decoder side intra mode derivation (DIMD) mode or a template-based inter mode derivation (TIMD) mode.

公开(公告)号：US20240406375A1

公开(公告)日：2024-12-05

申请号：US18695684

申请日：2022-09-29

Applicant: LG Electronics Inc.

Inventor： Jaehyun LIM ,  Naeri PARK

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

Abstract: An encoding/decoding method and device according to the present disclosure can: obtain a prediction sample of a current block; derive a first parameter for correcting the prediction sample of the current block on the basis of a first reference region for the current block; correct the prediction sample of the current block on the basis of the first parameter; and obtain a first corrected prediction sample.

公开(公告)号：US20240380901A1

公开(公告)日：2024-11-14

申请号：US18771179

申请日：2024-07-12

Applicant: LG Electronics Inc.

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

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

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: obtaining, through a bitstream, image information including a motion information candidate index and residual information; deriving motion information of a current block on the basis of the motion information candidate index; deriving a prediction sample on the basis of the motion information; deriving, on the basis of residual syntax elements for a current residual coefficient in the current block, the current residual coefficient; deriving a residual sample on the basis of the current residual coefficient; and deriving a reconstruction sample of the current block on the basis of the prediction sample and the residual sample.

公开(公告)号：US20240364896A1

公开(公告)日：2024-10-31

申请号：US18767539

申请日：2024-07-09

Applicant: LG Electronics Inc.

Inventor： Seungwook PARK ,  Joonyoung PARK ,  Jungsun KIM ,  Younghee CHOI ,  Yongjoon JEON ,  Jaewon SUNG ,  Byeongmoon JEON ,  Jaehyun LIM

IPC: H04N19/139 ,  H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/51 ,  H04N19/513 ,  H04N19/56 ,  H04N19/61 ,  H04N19/96

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/51 ,  H04N19/521 ,  H04N19/56 ,  H04N19/61 ,  H04N19/96

Abstract: The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.

公开(公告)号：US20240323371A1

公开(公告)日：2024-09-26

申请号：US18680226

申请日：2024-05-31

Applicant: LG Electronics Inc.

Inventor： Seungwook PARK ,  Jaehyun LIM ,  Yongjoon JEON ,  Chulkeun KIM ,  Jungsun KIM ,  Naeri PARK ,  Hendry HENDRY ,  Byeongmoon JEON ,  Joonyoung PARK

IPC: H04N19/117 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82 ,  H04N19/86

Abstract: A deblocking filtering method, a boundary strength (bS) deriving method, and encoding/decoding method and apparatus using the methods are provided. The bS deriving method includes the steps of: deriving a boundary of a deblocking filtering unit block which is a unit block on which deblocking filtering is performed; and setting a bS for each bS setting unit block in the deblocking filtering unit block. Here, the step of setting the bS includes setting a bS value of a target boundary corresponding to the boundary of the deblocking filtering unit block as the bS setting unit block.

公开(公告)号：US20240314322A1

公开(公告)日：2024-09-19

申请号：US18278790

申请日：2022-02-21

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Jaehyun LIM ,  Seunghwan KIM ,  Jie ZHAO

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

CPC classification number: H04N19/132 ,  H04N19/176 ,  H04N19/18

Abstract: An image decoding method according to the present document comprises the steps of: deriving corrected transform coefficients on the basis of secondary inverse transformation with respect to transform coefficients; and deriving residual samples for a target block on the basis of primary inverse transformation with respect to the corrected transform coefficients, wherein, on the basis of which the size of the target block is M×N (M≥16, N≥16), L (48

公开(公告)号：US20240297984A1

公开(公告)日：2024-09-05

申请号：US18662464

申请日：2024-05-13

Applicant: LG Electronics Inc.

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

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/18 ,  H04N19/1883 ,  H04N19/70

Abstract: A video decoding method performed by a decoding apparatus according to the present document may comprise the steps of: obtaining, from a bitstream, information indicating a level value of a transform coefficient in a current block; selecting one Rice parameter look-up table for the information indicating the level value of the transform coefficient, from among a plurality of Rice parameter look-up tables; deriving a Rice parameter for the information indicating the level value of the transform coefficient on the basis of the selected Rice parameter look-up table; deriving a bin string for the information indicating the level value of the transform coefficient on the basis of the Rice parameter; and deriving the level value of the transform coefficient on the basis of the bin string.

公开(公告)号：US20240291977A1

公开(公告)日：2024-08-29

申请号：US18569032

申请日：2022-08-03

Applicant: LG Electronics Inc.

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

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/186 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/186 ,  H04N19/82

Abstract: Provided are an image encoding/decoding method, a bitstream transmission method, and a computer-readable recording medium that stores a bitstream. The image decoding method according to the present disclosure is performed by an image decoding apparatus, and comprises the steps of: applying deblocking filtering to reconstructed samples; and deriving a modified luma sample and modified chroma samples by applying one or more of sample adaptive offset (SAO) filtering and cross component sample adaptive offset (CC-SAO) filtering to the reconstructed samples to which the deblocking filtering has been applied, wherein the modified luma sample is derived by applying the SAO filtering to a luma sample to which the deblocking filtering has been applied, and the modified chroma samples are derived by applying the SAO filtering to chroma samples to which the deblocking filtering has been applied, and applying the CC-SAO filtering to chroma samples to which the deblocking filtering has been applied and a luma sample to which first in-loop filtering has been applied.