公开(公告)号：US20200186820A1

公开(公告)日：2020-06-11

申请号：US16790089

申请日：2020-02-13

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Junghak Nam ,  Hyeonbmoon Jang

IPC: H04N19/513 ,  H04N19/44

Abstract: An image decoding method according to the present disclosure includes deriving a history-based motion vector prediction (HMVP) buffer for a current block, deriving motion information of the current block based on an HMVP candidate included in the HMVP buffer, generating prediction samples for the current block based on the motion information, and generating reconstructed samples based on the prediction samples, and the HMVP buffer is initialized when processing a first-ordered CTU in a CTU row in which a current CTU is located, and the current block is included in the current CTU.

公开(公告)号：US10681347B2

公开(公告)日：2020-06-09

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 ,  H04N19/42 ,  H04N19/196 ,  H04N19/44 ,  H04N19/82 ,  H04N19/147 ,  H04N19/176 ,  H04N19/513

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.

公开(公告)号：US10674146B2

公开(公告)日：2020-06-02

申请号：US15764685

申请日：2016-09-30

Applicant: LG ELECTRONICS INC.

Inventor： Jin Heo ,  Eunyong Son ,  Jaeho Lee ,  Seungwook Park ,  Sehoon Yea ,  Junghak Nam

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/124 ,  H04N19/44 ,  H04N19/90 ,  H04N19/119 ,  H04N19/129 ,  H04N19/70 ,  H04N19/14 ,  H04N19/18 ,  H04N19/61

Abstract: An image decoding method according to the present invention comprises the steps of: deriving quantized transform coefficients by unit of sub-blocks in a transform unit on the basis of residual information included in a bitstream; deriving transform coefficients on the basis of the quantized transform coefficients; generating a residual sample on the basis of the transform coefficients; generating a prediction sample on the basis of an inter prediction or an intra prediction; and restoring an image on the basis of the residual sample and the prediction sample. According to the present invention, a quantity of data required for a residual signal can be reduced, and an overall coding efficiency can be improved.

公开(公告)号：US10609374B2

公开(公告)日：2020-03-31

申请号：US15777847

申请日：2016-11-22

Applicant: LG ELECTRONICS INC.

Inventor： Junghak Nam ,  Jin Heo ,  Seungwook Park

IPC: H04N19/13 ,  H04N19/91 ,  H04N19/176 ,  H04N19/70 ,  H04N19/174 ,  H04N19/149

Abstract: The present invention provides a method of performing an entropy decoding for a video signal including obtaining a context model initial value for a current slice; calculating a probability value based on syntax statistics of a previous slice; deriving weighted values corresponding to the context model initial value for the current slice and the syntax statistics of the previous slice; and updating the context model initial value for the current slice using the weighted values.

公开(公告)号：US10397611B2

公开(公告)日：2019-08-27

申请号：US15510807

申请日：2015-09-07

Applicant: LG Electronics Inc.

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

IPC: H04N19/597 ,  H04N19/50 ,  H04N19/176 ,  H04N19/70 ,  H04N19/105 ,  H04N19/593 ,  H04N19/146

Abstract: The present invention relates to a device and a method for coding a 3D video, a decoding method, according to the present invention, comprising the steps of: receiving a single depth mode (SDM) flag information indicating whether the SDM is applied to a current block; and if the SDM is applied to the current block, generating a prediction sample on the basis of a first candidate and a second candidate derived by using spatial neighboring reference samples of the current block, wherein the number of the spatial neighboring reference samples is two, and among the neighboring reference samples, the first neighboring reference sample is positioned on the left side of the current block, and the second neighboring reference sample is positioned on the upper side of the current block. According to the present invention, the current block may be predicted on the basis of one representative value derived by using the predetermined neighboring reference sample, and the complexity of an operation may be decreased, and coding efficiency may be increased.

公开(公告)号：US20180288409A1

公开(公告)日：2018-10-04

申请号：US15764685

申请日：2016-09-30

Applicant: LG ELECTRONICS INC.

Inventor： Jin Heo ,  Eunyong Son ,  Jaeho Lee ,  Seungwook PARK ,  Sehoon Yea ,  Junghak Nam

IPC: H04N19/105 ,  H04N19/124 ,  H04N19/176 ,  H04N19/44 ,  H04N19/61 ,  H04N19/18

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/44 ,  H04N19/61 ,  H04N19/70 ,  H04N19/90

Abstract: An image decoding method according to the present invention comprises the steps of: deriving quantized transform coefficients by unit of sub-blocks in a transform unit on the basis of residual information included in a bitstream; deriving transform coefficients on the basis of the quantized transform coefficients; generating a residual sample on the basis of the transform coefficients; generating a prediction sample on the basis of an inter prediction or an intra prediction; and restoring an image on the basis of the residual sample and the prediction sample. According to the present invention, a quantity of data required for a residual signal can be reduced, and an overall coding efficiency can be improved.

公开(公告)号：US10070147B2

公开(公告)日：2018-09-04

申请号：US15028806

申请日：2014-10-20

Applicant: LG ELECTRONICS INC.

Inventor： Taesup Kim ,  Sehoon Yea ,  Jin Heo ,  Jungdong Seo ,  Sunmi Yoo ,  Junghak Nam

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/119 ,  H04N19/513 ,  H04N19/137 ,  H04N19/105 ,  H04N19/139

Abstract: The present invention relates to a method for constituting a merge candidate list by using a view synthesis prediction (VSP) and the like in multi-view video coding. The method for constituting the merge candidate list according to the present invention comprises the steps of: determining a prediction mode for a current block; inducing, as a merge candidate, motion information from neighboring blocks of the current block when the prediction mode for the current block is a merge mode or a skip mode; and constituting the merge candidate list by using the motion information of the neighboring blocks and the deep parity information induced from the neighboring blocks of the current block.

公开(公告)号：US10063887B2

公开(公告)日：2018-08-28

申请号：US15028649

申请日：2014-10-20

Applicant: LG ELECTRONICS INC.

Inventor： Junghak Nam ,  Jungdong Seo ,  Sunmi Yoo ,  Sehoon Yea ,  Jin Heo ,  Taesup Kim ,  Moonmo Koo

IPC: H04N19/52 ,  H04N19/597 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/597 ,  H04N19/176 ,  H04N19/182 ,  H04N19/52

Abstract: A method inducing video information required for decoding a current block by entropy-decoding a bitstream; inducing a first disparity vector based on a neighboring block of the current block in the same view by using the video information, inducing a second disparity vector by using the first disparity vector and a reference view depth, and inducing a third disparity vector using the difference between the first disparity vector and the second disparity vector; inducing a prediction sample of the current block by using one of the first disparity vector, the second disparity vector, or the third disparity vector; and applying filtering to a current picture which has been restored using the prediction sample.