公开(公告)号：US20210037238A1

公开(公告)日：2021-02-04

申请号：US16766982

申请日：2018-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Junghak NAM ,  Jungdong SEO ,  Jaeho LEE ,  Hyeongmoon JANG

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  H04N19/182

Abstract: An image decoding method that is performed by a decoding apparatus according to the present disclosure comprises the steps of: forming a merge candidate list based on neighbouring blocks of a current block; deriving costs with respect to merge candidates included in the merge candidate list; deriving a revised merge candidate list based on the costs with respect to the merge candidates; deriving movement information of the current block based on the revised merge candidate list; and performing prediction on the current block based on the movement information, wherein the neighbouring blocks include spatial neighbouring blocks and temporal neighbouring blocks.

公开(公告)号：US20210029373A1

公开(公告)日：2021-01-28

申请号：US17065822

申请日：2020-10-08

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Junghak NAM ,  Hyeongmoon 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：US20210021860A1

公开(公告)日：2021-01-21

申请号：US17060582

申请日：2020-10-01

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon JANG ,  Junghak NAM ,  Naeri PARK

IPC: H04N19/513 ,  H04N19/109 ,  H04N19/176 ,  H04N19/136 ,  H04N19/587

Abstract: In the present disclosure, a method of decoding a video signal and a device therefor are disclosed. Specifically, a method of decoding an image based on an inter prediction mode includes deriving a motion vector of an available spatial neighboring block around a current block; deriving a collocated block of the current block based on the motion vector of the spatial neighboring block; deriving a motion vector in a sub-block unit in the current block based on a motion vector of the collocated block; and generating a prediction block of the current block using the motion vector derived in the sub-block unit, wherein the collocated block may be specified by the motion vector of the spatial neighboring block in one pre-defined reference picture.

公开(公告)号：US20210021840A1

公开(公告)日：2021-01-21

申请号：US16323488

申请日：2017-08-08

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon JANG ,  Junghak NAM

IPC: H04N19/174 ,  G06T9/40 ,  H04N19/176 ,  H04N19/122 ,  H04N19/70 ,  H04N19/96 ,  H04N19/64

Abstract: The present invention relates to an image processing method and an apparatus therefor. Specifically, a method for decoding an image may comprise the steps of: decoding a first split flag indicating whether to split a first block using a binary tree structure; when the first split flag indicates that the first block is split, decoding split mode information indicating the direction in which the first block is split; checking whether a second block split from the first block is a square block, according to the split mode information; and when, as a result of the checking, it is determined that the second block is a square block, decoding a second split flag indicating whether to split the second block using a quad tree structure.

公开(公告)号：US20190098299A1

公开(公告)日：2019-03-28

申请号：US16095590

申请日：2016-04-22

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Jaehyun LIM ,  Junghak NAM

IPC: H04N19/109 ,  H04N19/513 ,  H04N19/577 ,  H04N19/119 ,  H04N19/176

Abstract: The present invention discloses an inter prediction mode-based image processing method and an apparatus therefore. Specifically, a method for processing an image based on an inter prediction may include: deriving motion information of a first prediction unit determined by a first partitioning mode of a current block and motion information of a second prediction unit determined by a second partitioning mode of the current block; generating a prediction block of the first prediction unit by using the motion information of the first prediction unit and generating a prediction block of the second prediction unit by using the motion information of the second prediction unit; and generating a prediction block of the current block in units of sub-prediction unit determined by combining the first prediction unit and the second prediction unit by using the first prediction block and the second prediction block.

公开(公告)号：US20180338144A1

公开(公告)日：2018-11-22

申请号：US15777847

申请日：2016-11-22

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Jin HEO ,  Seungwook PARK

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

CPC classification number: H04N19/13 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91

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：US20180309983A1

公开(公告)日：2018-10-25

申请号：US15768773

申请日：2016-10-24

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Eunyong SON ,  Junghak NAM

IPC: H04N19/105 ,  H04N19/147 ,  H04N19/11 ,  H04N19/176 ,  H04N19/44 ,  H04N19/139 ,  H04N19/13 ,  H04N19/91

CPC classification number: H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/13 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176 ,  H04N19/44 ,  H04N19/91

Abstract: According to the present invention, an image decoding method performed by a decoding device comprises the steps of: deriving a prediction mode of a current block; generating a prediction block of the current block on the basis of the prediction mode of the current block; deriving a neighboring block of the current block; deriving correlation information on the basis of a reconstruction block of the neighboring block and a prediction block of the neighboring block; deriving a modified prediction block of the current block on the basis of the prediction block of the current block and the correlation information; and deriving a reconstruction block of the current block on the basis of the modified prediction block. According to the present invention, a current block can be predicted in consideration of the correlation between a prediction sample and a reconstruction sample of a neighboring block, and a complicated image can be more efficiently reconstructed through the prediction.

公开(公告)号：US20170310993A1

公开(公告)日：2017-10-26

申请号：US15517712

申请日：2015-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Sehoon YEA ,  Jungdong SEO ,  Sunmi YOO

IPC: H04N19/597 ,  H04N19/513 ,  H04N19/44

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N2013/0081

Abstract: The present invention relates to 3D video coding device and method. A decoding method according to the present invention provides a 3D video decoding method. A decoding method comprises the steps of: deriving a disparity vector with respect to a current block; deriving the location of a corresponding sample on a reference view on the basis of the disparity vector; deriving the location of a reference sample on the basis of the location of the corresponding sample; and deriving movement information of a prediction block that covers the location of the reference sample. According to the present invention, when a corresponding block in a reference view is derived by means of a disparity vector, movement information of the corresponding block can be derived in accordance with movement information compression, a buffer load of an encoder and a decoder can be reduced, and coding efficiency can be enhanced by having the amount of information being processed reduced.

公开(公告)号：US20160255371A1

公开(公告)日：2016-09-01

申请号：US15029941

申请日：2014-10-20

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Sehoon YEA ,  Taesup KIM ,  Junghak NAM

IPC: H04N19/597 ,  H04N19/11

CPC classification number: H04N19/597 ,  H04N19/11 ,  H04N19/159 ,  H04N19/187

Abstract: The present invention provides a method for coding and decoding a 3D video comprising a depth-map picture. The method for coding a 3D video, according to one embodiment of the present invention, comprises the steps of: inducing a first index value with respect to a first sample of a current block by mapping a depth lookup table (DLT) on a predicted depth value of the first sample of the current block which has been induced based on an intra-prediction mode of the current block in a depth map picture; inducing a second index value with respect to the first sample of the current block by mapping the DLT on an original depth value of the first sample of the current block; inducing a residual index value between the first index value and the second index value with respect to the first sample of the current block; and transforming, quantizing, and entropy-coding the residual index value.

Abstract translation: 本发明提供了一种用于对包含深度图图像的3D视频进行编码和解码的方法。 根据本发明的一个实施例的用于对3D视频进行编码的方法包括以下步骤：通过将深度查找表（DLT）映射到预测深度上来引导相对于当前块的第一样本的第一索引值 基于深度图图像中的当前块的帧内预测模式感应的当前块的第一样本的值; 通过将DLT映射到当前块的第一样本的原始深度值上来，相对于当前块的第一样本来诱导第二索引值; 在所述第一指数值和所述第二指数值之间相对于所述当前块的所述第一样本感知剩余指数值; 并对剩余指标值进行变换，量化和熵编码。

公开(公告)号：US20160255369A1

公开(公告)日：2016-09-01

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

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

Abstract: The present invention relates to a video decoding apparatus and method for decoding a multi-view video, and the method for decoding a video, according to the present invention, is the video decoding method for decoding a multi-view video, comprising the steps of: 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.

Abstract translation: 本发明涉及用于解码多视点视频的视频解码装置和方法，以及根据本发明的解码视频的方法，是用于对多视点视频进行解码的视频解码方法，包括以下步骤： ：通过对比特流进行熵解码来诱导解码当前块所需的视频信息; 通过使用视频信息在同一视图中基于当前块的相邻块来诱导第一视差向量，通过使用第一视差向量和参考视图深度来诱导第二视差向量，并且使用差异来诱导第三视差矢量 在第一视差矢量和第二视差矢量之间; 通过使用第一视差矢量，第二视差矢量或第三视差矢量中的一个来诱导当前块的预测采样; 并对使用预测样本恢复的当前图像应用滤波。