公开(公告)号：US10687073B2

公开(公告)日：2020-06-16

申请号：US15769261

申请日：2016-10-24

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong Seo ,  Jaehyun Lim ,  Naeri Park

IPC: H04N19/51 ,  H04N19/176 ,  H04N19/119 ,  H04N19/137 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/46 ,  H04N19/70

Abstract: Disclosed are a method for encoding/decoding an image and a device therefor. Particularly, a method by which a decoding device decodes an image comprises the steps of: deriving a part mode of a coding block within a predefined part mode set; decoding a motion parameter in a prediction block unit partitioned from the coding block according to the part mode; and generating a predicted block by using the motion parameter decoded in the prediction block unit, wherein the part mode set includes an asymmetric 4-block part mode, the asymmetric 4-block part mode enables four prediction blocks to be partitioned from the coding block, and a horizontal partition and/or a vertical partition can be defined as an asymmetric partition form.

公开(公告)号：US10587894B2

公开(公告)日：2020-03-10

申请号：US15510500

申请日：2015-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Jungdong Seo ,  Junghak Nam ,  Sehoon Yea

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/70 ,  H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/52 ,  H04N19/513

Abstract: The present invention relates to a device and a method for coding a multi-view video, a residual prediction method, according to the present invention, comprising the steps of: deriving a disparity vector of a current block; performing residual prediction on the current block on the basis of the disparity vector; and generating a residual prediction sample, wherein the disparity vector is not derived on the basis of a neighboring block of the current block, but is derived from a preset default vector. According to the present invention, the effect of prediction may be increased by performing residual prediction on the current block according to a certain condition, not only when the disparity vector is induced but also when the disparity vector is not induced from the neighboring block of the current block.

公开(公告)号：US20170310994A1

公开(公告)日：2017-10-26

申请号：US15517792

申请日：2015-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong Seo ,  Sehoon Yea ,  Sunmi Yoo ,  Junghak Nam

IPC: H04N19/597 ,  H04N19/593

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593 ,  H04N2013/0081

Abstract: The present invention relates to a device and method for coding a 3D video, and a decoding method according to the present invention comprises the steps of: decoding information on an intra-skip mode for a current block; deriving, as the intra-skip mode, a prediction mode of the current block on the basis of the information on the intra-skip mode; generating a candidate list for the intra-skip mode; and generating a reconstruction sample of the current block on the basis of the candidate list. The present invention can reduce the amount of data to be transmitted and improve coding efficiency by coding a current block on the basis of an intra-skip mode in 3D video coding. In addition, the present invention can perform an intra-skip mode procedure on the basis of an intra-directional mode using a neighboring block in 3D video coding, and reconstruct the current block without a residual signal.

公开(公告)号：US12284340B2

公开(公告)日：2025-04-22

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

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.

公开(公告)号：US12003708B2

公开(公告)日：2024-06-04

申请号：US18091933

申请日：2022-12-30

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.

公开(公告)号：US20230345033A1

公开(公告)日：2023-10-26

申请号：US18215656

申请日：2023-06-28

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyun Lim ,  Naeri Park ,  Jungdong Seo ,  Junghak Nam

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

CPC classification number: H04N19/51 ,  H04N19/53 ,  H04N19/70 ,  H04N19/513 ,  H04N19/523 ,  H04N19/176

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：US10924730B2

公开(公告)日：2021-02-16

申请号：US16347422

申请日：2016-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Jungdong Seo ,  Jaehyun Lim ,  Junghak Nam

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/172 ,  H04N19/91 ,  H04N19/132 ,  H04N19/86 ,  H04N19/109

Abstract: According to the present invention, an image decoding method performed by a decoding device comprises the steps of: generating a first prediction block and a second prediction block of a current block; selecting a prediction block, to which a Wiener filter is to be applied, among the first prediction block and the second prediction block; deriving Wiener filter coefficients of the selected prediction block based on the first prediction block and the second prediction block; filtering the selected prediction block based on the derived Wiener filter coefficients; and generating a reconstructed block of the current block based on the filtered prediction block. According to the present invention, the overall coding efficiency can be improved by minimizing the difference between prediction blocks.

公开(公告)号：US10602141B2

公开(公告)日：2020-03-24

申请号：US15768403

申请日：2016-01-25

Applicant: LG ELECTRONICS INC.

Inventor： Kyuwoon Kim ,  Jaehyun Lim ,  Naeri Park ,  Jungdong Seo

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/503 ,  H04N19/82 ,  H04N19/176 ,  H04N19/513

Abstract: An inter prediction method according to the present invention, which is performed by a decoding apparatus, comprises the steps of: acquiring prediction-related information and residual information from a received bitstream; performing inter prediction on a current block on the basis of the prediction-related information so as to generate prediction samples; generating a list of Wiener filter candidates on the basis of spatially neighboring blocks of the current block, and deriving Wiener filter coefficients for the current block on the basis of candidate blocks in the list of the Wiener filter candidates; filtering the prediction samples on the basis of the derived Wiener filter coefficients; deriving residual samples for the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the filtered prediction samples and the residual samples. The present invention can reduce the amount of data for a residual signal and improve coding efficiency.

公开(公告)号：US20200036970A1

公开(公告)日：2020-01-30

申请号：US16591238

申请日：2019-10-02

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Jaeho Lee ,  Jangwon Choi ,  Jungdong Seo ,  Jin Heo

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

公开(公告)号：US20180295361A1

公开(公告)日：2018-10-11

申请号：US15764816

申请日：2016-09-23

Applicant: LG Electronics Inc.

Inventor： Chulkeun Kim ,  Junghak Nam ,  Jaehyun Lim ,  Naeri Park ,  Jungdong Seo

IPC: H04N19/117 ,  H04N19/80 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/117 ,  H04N19/147 ,  H04N19/176 ,  H04N19/196 ,  H04N19/42 ,  H04N19/44 ,  H04N19/513 ,  H04N19/80 ,  H04N19/82

Abstract: A filtering method performed by a decoding device according to the present invention comprises the steps of: deriving a specific neighboring block of a current block so as to derive filter information on the current block; deriving the specific neighboring block and a reference block within a reference picture corresponding to the specific neighboring block; deriving the filter information on the current block on the basis of the specific neighboring block and the reference block; and filtering the current block on the basis of the filter information. According to the present invention, the overall coding efficiency can be improved by deriving the filter information on the basis of the neighboring block of the already decoded current block and reducing or removing the amount of data for the transmission of the information necessary for filter generation.