公开(公告)号：US20210144399A1

公开(公告)日：2021-05-13

申请号：US17124231

申请日：2020-12-16

申请人： LG ELECTRONICS INC.

发明人： Jaeho LEE ,  Junghak Nam ,  Naeri Park ,  Hyeongmoon Jang

IPC分类号： H04N19/52 ,  H04N19/119 ,  H04N19/176

摘要： An image decoding method according to the present document includes obtaining motion prediction information for a current block from a bitstream, generating an affine MVP candidate list for the current block, deriving CPMVPs for CPs of the current block based on the affine MVP candidate list, deriving CPMVDs for the CPs of the current block based on the motion prediction information, deriving CPMVs for the CPs of the current block based on the CPMVPs and the CPMVDs, and deriving prediction samples for the current block based on the CPMVs.

公开(公告)号：US10979738B2

公开(公告)日：2021-04-13

申请号：US16605447

申请日：2018-04-03

申请人： LG ELECTRONICS INC.

发明人： Junghak Nam ,  Seunghwan Kim ,  Hyeongmoon Jang ,  Jaehyun Lim

IPC分类号： H04N19/64 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

摘要： An image decoding method performed by means of a decoding device according to the present invention comprises the steps of: obtaining first split information relating to a first target block; if the first split information indicates that the first target block is to be split, splitting the first target block into first sub-blocks; obtaining MPT split information relating to a second target block which is one of the first sub-blocks of the first target block; splitting the second target block into second sub-blocks on the basis of the MPT split information; and decoding the second sub-blocks, wherein the second sub-blocks are non-square blocks.

公开(公告)号：US10917639B2

公开(公告)日：2021-02-09

申请号：US16324452

申请日：2017-02-07

申请人： LG Electronics Inc.

发明人： Hyeongmoon Jang ,  Junghak Nam ,  Jaehyun Lim ,  Jin Heo

IPC分类号： H04N19/11 ,  H04N19/132 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/105

摘要： Disclosed are an intra-prediction mode-based image processing method and a device therefor. Particularly, a method for processing an image on the basis of an intra-prediction mode may comprise the steps of: configuring a reference sample to be used for prediction of a current block on the basis of width information and height information of the current block when the current block is a non-square block; deriving an intra-prediction mode of the current block; and generating a prediction sample of the current block by using the reference sample on the basis of the intra-prediction mode of the current block.

公开(公告)号：US10911754B2

公开(公告)日：2021-02-02

申请号：US16818677

申请日：2020-03-13

申请人： LG ELECTRONICS INC.

发明人： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang ,  Jaeho Lee

IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/423 ,  H04N19/533 ,  H04N19/70

摘要： According to an embodiment disclosed in the present specification, a history-based motion vector prediction (HMVP) candidate set with respect to a current block may be derived based on a history, the HMVP candidate set may be updated or initialized according to a condition, and motion information of the current block may be derived based on the HMVP candidate set, through which inter prediction efficiency can be improved.

公开(公告)号：US10798400B2

公开(公告)日：2020-10-06

申请号：US15754720

申请日：2016-02-29

申请人： LG Electronics Inc.

发明人： Jaehyun Lim ,  Naeri Park ,  Jungdong Seo ,  Junghak Nam

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

摘要： 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：US10587894B2

公开(公告)日：2020-03-10

申请号：US15510500

申请日：2015-09-07

申请人： LG ELECTRONICS INC.

发明人： Sunmi Yoo ,  Jungdong Seo ,  Junghak Nam ,  Sehoon Yea

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

摘要： 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：US10547848B2

公开(公告)日：2020-01-28

申请号：US15773374

申请日：2016-11-04

申请人： LG ELECTRONICS INC.

发明人： Junghak Nam ,  Chulkeun Kim

IPC分类号： H04N19/14 ,  H04N19/176 ,  H04N19/70

摘要： An image decoding method performed by a decoding apparatus, according to the present invention, comprises the steps of: acquiring information on a first SAO and information on a second SAO of a current block through a bit stream; generating a reconstructed block of the current block; and performing an SAO procedure for the reconstructed block on the basis of the first SAO and the second SAO, wherein the information on the first SAO comprises first offset type information applied to the first SAO and first offset value information for n offset values, and the information on the second SAO comprises second offset type information applied to the second SAO and second offset value information for m offset values. According to the present invention, an efficient SAO procedure can be performed on the basis of a plurality of SAOs, and the video quality of images can be further improved.

公开(公告)号：US20170310994A1

公开(公告)日：2017-10-26

申请号：US15517792

申请日：2015-10-06

申请人： LG ELECTRONICS INC.

发明人： Jungdong Seo ,  Sehoon Yea ,  Sunmi Yoo ,  Junghak Nam

IPC分类号： H04N19/597 ,  H04N19/593

CPC分类号： H04N19/597 ,  H04N13/161 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593 ,  H04N2013/0081

摘要： 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：US11632567B2

公开(公告)日：2023-04-18

申请号：US17466155

申请日：2021-09-03

申请人： LG ELECTRONICS INC

发明人： Jaeho Lee ,  Junghak Nam

IPC分类号： H04N19/52 ,  H04N19/176 ,  H04N19/139 ,  H04N19/157

摘要： A method for processing a video signal using an affine motion prediction is disclosed. The method includes checking that a current block is encoded by the affine motion prediction, obtaining motion vectors for a plurality of control points of the current block, determining a motion vector for each of a plurality of subblocks included in the current block based on the motion vectors for the plurality of control points, and performing a prediction for the current block from the motion vector for each of the plurality of subblocks, wherein each of the plurality of subblocks is configured to have a pre-defined width and a pre-defined height.

公开(公告)号：US11627334B2

公开(公告)日：2023-04-11

申请号：US17559964

申请日：2021-12-22

申请人： LG ELECTRONICS INC.

发明人： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70 ,  H04N19/107 ,  H04N19/139 ,  H04N19/172 ,  H04N19/573

摘要： An image decoding method according to the present document may comprise the steps of: deriving an inter prediction mode from encoded information; configuring reference picture lists, deriving motion information comprising reference picture indexes for symmetric motion vector differences (SMVD); and generating prediction samples on the basis of the motion information, wherein the reference picture indexes for SMVD can be derived on the basis of short-term reference pictures included within the reference picture lists.