公开(公告)号：US20180184131A1

公开(公告)日：2018-06-28

申请号：US15735450

申请日：2016-06-13

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jin HEO ,  Junghak NAM

IPC: H04N19/91 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/91 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/48

Abstract: The present invention provides a method for encoding/decoding an image and a device therefor. Particularly, a method for encoding an image by an encoding device may comprise the steps of: dividing a quantized coefficient block into coefficient groups having a predetermined size; searching a first coefficient group which is a last coefficient group including a non-zero coefficient within the quantized coefficient block according to a predetermined inverse-scanning order; searching the first coefficient group for the last non-zero coefficient according to the inverse-scanning order; relocating the non-zero coefficient of the first coefficient group to a second coefficient group which is a preceding coefficient group of the last coefficient group according to the inverse-scanning order; and entropy-encoding by an encoder according to a predetermined scanning order.

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：US20180048890A1

公开(公告)日：2018-02-15

申请号：US15555424

申请日：2016-02-02

Applicant: LG Electronics Inc.

Inventor： Chulkeun KIM ,  Junghak NAM ,  Seungwook PARK ,  Sehoon YEA

IPC: H04N19/117 ,  H04N19/46

CPC classification number: H04N19/117 ,  H04N19/46 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

Abstract: The present invention provides a method for decoding a video signal. The method includes: obtaining filtering flag information indicating whether to perform filtering for a target unit; obtaining a filter parameter based on the filtering flag information, the filter parameter including at least one of a base filter kernel and a modulation weight; and performing filtering for the target unit using the filter parameter, wherein the filter parameter corresponds to a temporal filter parameter or a spatial filter parameter, and the temporal filter parameter is used to minimize the difference between an original image and a reference image, and the spatial filter parameter is used to minimize the difference between the original image and a reconstructed image.

公开(公告)号：US20250159178A1

公开(公告)日：2025-05-15

申请号：US18695229

申请日：2022-09-29

Applicant: LG Electronics Inc.

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

IPC: H04N19/132 ,  H04N19/137 ,  H04N19/176

Abstract: An image encoding/decoding method and device according to the present disclosure may: partition a current block into a plurality of subregions; derive a control point vector of a current subregion among the plurality of subregions; derive a motion vector of the current subregion on the basis of the control point vector; and generate a prediction sample of the current block on the basis of the motion vector of the current subregion.

公开(公告)号：US20250150623A1

公开(公告)日：2025-05-08

申请号：US19020408

申请日：2025-01-14

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Hyeongmoon JANG

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/132 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/52

Abstract: According to the present disclosure of the present document, prediction can be performed on the basis of information related to the maximum number of block vector candidates included in a merge candidate list for the IBC merge mode, and thus information for IBC, which is distinguished from information used in inter prediction, can be signaled separately, and the efficiency of screen content coding (SCC) can be increased.

公开(公告)号：US20250142051A1

公开(公告)日：2025-05-01

申请号：US18989342

申请日：2024-12-20

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG

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

Abstract: According to the disclosure of the present document, when the inter prediction type of a current block indicates bi-prediction, weight index information for candidates in a merge candidate list or a sub-block merge candidate list can be derived, and thus coding efficiency can be increased.

公开(公告)号：US20250133212A1

公开(公告)日：2025-04-24

申请号：US18833579

申请日：2023-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Junghak NAM ,  Jungah CHOI

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

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: deriving neighboring samples for sign prediction of a current block; deriving costs of sign combination candidates for transform coefficients of the current block on the basis of the neighboring samples; predicting signs of the transform coefficients from the sign combination candidates on the basis of the costs; deriving residual samples of the current block on the basis of the predicted signs; and generating a reconstructed picture on the basis of the residual samples.

公开(公告)号：US20250106433A1

公开(公告)日：2025-03-27

申请号：US18972241

申请日：2024-12-06

Applicant: LG Electronics Inc.

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

IPC: H04N19/60 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18

Abstract: An image decoding method according to the present document comprises the steps of: acquiring prediction-related information and residual-related information for a current block; deriving transform coefficients for the current block on the basis of the residual-related information; and generating residual samples of the current block on the basis of the transform coefficients, wherein the residual-related information includes low-frequency non-separable transform (LFNST) index information indicating information relating to non-separable transform for a low-frequency transform coefficient of the current block on the basis of a matrix-based intra prediction (MIP) flag.

公开(公告)号：US20250080741A1

公开(公告)日：2025-03-06

申请号：US18725975

申请日：2022-12-28

Applicant: LG Electronics Inc.

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

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/513

Abstract: An image decoding/encoding method and device disclosed herein can: acquire prediction samples of the current block; determine a reference area for the current block on the basis of one of a plurality of modes pre-defined in the decoding/encoding device; derive parameters for correcting the prediction samples of the current block, the parameters being derived on the basis of the reference area for the current block; and correct the prediction samples of the current block on the basis of the parameters.

公开(公告)号：US20250024020A1

公开(公告)日：2025-01-16

申请号：US18897734

申请日：2024-09-26

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG

IPC: H04N19/105 ,  H04N19/109 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/527 ,  H04N19/577

Abstract: According to a disclosure of the present document, when the type of inter-prediction of a current block is indicated as biprediction, weight index information for a candidate within a merge candidate list or a sub-block merge candidate list may be derived, and coding efficiency may be increased.