公开(公告)号：US20150078438A1

公开(公告)日：2015-03-19

申请号：US14554189

申请日：2014-11-26

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/11

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/50 ,  H04N19/513 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61

Abstract: A method and apparatus for signaling and receiving a video signal for processing is disclosed. Methods for determining a most probable mode for predicting a current prediction block are provided as well as new methods for grouping intra prediction modes into prediction groups. Methods for predicting a prediction block of video data as well as signaling intra prediction modes are also provided.

Abstract translation: 公开了用于信令和接收用于处理的视频信号的方法和装置。 提供了用于确定用于预测当前预测块的最可能模式的方法以及用于将帧内预测模式分组为预测组的新方法。 还提供了用于预测视频数据的预测块以及信令帧内预测模式的方法。

公开(公告)号：US20130163669A1

公开(公告)日：2013-06-27

申请号：US13772144

申请日：2013-02-20

Applicant: LG Electronics Inc.

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

IPC: H04N7/26

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/50 ,  H04N19/513 ,  H04N19/56 ,  H04N19/573 ,  H04N19/577

Abstract: The present invention relates to a method and apparatus for encoding or decoding a video signal. According to the present invention, a plurality of reference units for image prediction of the current unit is acquired and combined to obtain a unit prediction value, thereby improving the accuracy of image prediction. More particularly, the present invention relates to a method for inducing a variety of reference units using a motion vector prediction value or a motion vector which is used in conventional inter-prediction, and also relates to a method which combines the reference units so as to obtain the prediction value for the current unit. In addition, the present invention relates to a method which involves acquiring a plurality of reference units for a merging mode, and combining the reference units so as to perform image prediction.

公开(公告)号：US20250159263A1

公开(公告)日：2025-05-15

申请号：US19022025

申请日：2025-01-15

Applicant: LG Electronics Inc.

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

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/132 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/61

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：US20250142126A1

公开(公告)日：2025-05-01

申请号：US18941358

申请日：2024-11-08

Applicant: LG Electronics Inc.

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

IPC: H04N19/625 ,  H04N19/119 ,  H04N19/12 ,  H04N19/157 ,  H04N19/176

Abstract: A method and device for processing a video signal using a reduced transform are provided. A method for decoding a video signal includes splitting a current block into a plurality of subblocks based on a first flag for a split direction of the current block, determining a subblock, to which a transform is applied, among the plurality of subblocks based on a second flag for a position of a transform target block, determining a transform target area in the subblock, and applying an inverse transform including a horizontal transform and a vertical transform to transform coefficients of the transform target area. The transform target area is determined based on a transform type applied to the subblock and a size of the subblock.

公开(公告)号：US20250142116A1

公开(公告)日：2025-05-01

申请号：US19009614

申请日：2025-01-03

Applicant: LG Electronics Inc.

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

IPC: H04N19/593 ,  H04N19/70 ,  H04N19/96

Abstract: Disclosed are a method for partitioning a block and a decoding device. A method for decoding an image comprises the steps of: partitioning one prediction unit, in which an intra prediction is performed in a predetermined intra prediction mode, into a plurality of transform units; and performing the intra prediction for each of the plurality of the transform units on the basis of the predetermined intra prediction mode. Thus, the invention increases the image encoding efficiency.

公开(公告)号：US20250126286A1

公开(公告)日：2025-04-17

申请号：US18934064

申请日：2024-10-31

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyun LIM ,  Naeri PARK ,  Jungdong SEO ,  Junghak NAM

IPC: H04N19/51 ,  H04N19/176 ,  H04N19/513 ,  H04N19/523 ,  H04N19/53 ,  H04N19/70

Abstract: Disclosed are an inter prediction mode-based image processing method and an apparatus therefor. Particularly, a method for processing an image on the basis of inter prediction may comprise the steps of: determining whether a motion vector scale adaptation is applied to a block; up-scaling a down-scaled MVD(Motion Vector Difference) when the motion vector scale adaptation is applied to the block; deriving a MV(Motion Vector) for the block, using the up-scaled MVD and a MVP(Motion Vector Predictor); and generating a predictive block of the block, using the derived MV.

公开(公告)号：US20250080754A1

公开(公告)日：2025-03-06

申请号：US18293202

申请日：2022-08-18

Applicant: LG Electronics Inc.

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

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176

Abstract: Provided are an image encoding/decoding method and apparatus. An image decoding method performed by an image decoding apparatus may comprise determining an intra prediction mode of a current block, performing planar intra prediction based on the intra prediction mode being a planar prediction mode and obtaining a reconstructed sample of the current block based on a prediction sample obtained based on the planar intra prediction. The performing the planar intra prediction may comprise applying filtering to an intra prediction reference sample of the current block.

公开(公告)号：US20250080720A1

公开(公告)日：2025-03-06

申请号：US18726662

申请日：2022-12-28

Applicant: LG Electronics Inc.

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: An image encoding/decoding method and device according to the present disclosure can generate a candidate list of a current block, add an average candidate to the candidate list of the current block, and perform inter-prediction on the current block on the basis of the candidate list including the average candidate. Here, the candidate list includes a plurality of affine candidates, the plurality of affine candidates include at least one from among an inherited candidate, a constructed candidate, and a history-based candidate, and the average candidate can be generated on the basis of two affine candidates selected according to a predetermined priority from the candidate list.

公开(公告)号：US20250063186A1

公开(公告)日：2025-02-20

申请号：US18819109

申请日：2024-08-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/625

Abstract: Provided is a method for decoding a video signal based on a reduced transform, which includes: checking whether a transform skip is applied to a current block; obtaining a transform index indicating a transform kernel of the current block from the video signal when the transform skip is not applied to the current block; determining a region where a primary transform is applied to the current block based on the transform kernel indicated by the transform index and a size of the current block; and performing an inverse primary transform on the region to which the primary transform is applied by using the transform kernel indicated by the transform index.

公开(公告)号：US20250063179A1

公开(公告)日：2025-02-20

申请号：US18724568

申请日：2022-12-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/159 ,  H04N19/132 ,  H04N19/186 ,  H04N19/196

Abstract: Provided are an image encoding/decoding method and apparatus. An image decoding method may comprise deriving chroma reference samples located around a chroma block and luma reference samples corresponding to the chroma reference samples based on an intra prediction mode of the chroma block being a cross-component linear model (CCLM) mode, deriving CCLM parameters based on the chroma reference samples and the luma reference samples, and generating a prediction sample of the chroma block based on the CCLM parameters. The chroma reference samples may be obtained from two or more chroma reference lines adjacent to the chroma block.