公开(公告)号：US20190052875A1

公开(公告)日：2019-02-14

申请号：US15758967

申请日：2016-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Eunyong SON ,  Seungwook PARK ,  Yongjoon JEON ,  Jin HEO ,  Moonmo KOO ,  Sunmi YOO

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/593 ,  H04N19/82 ,  H04N19/176

Abstract: An intra prediction method includes the steps of: acquiring intra prediction mode information from a bitstream; deriving neighboring samples of a current block; determining an intra prediction mode for the current block on the basis of the intra prediction mode information; deriving a prediction sample of the current block on the basis of the intra prediction mode and the neighboring samples; determining filtering reference samples for the prediction sample on the basis of the intra prediction mode; and deriving a filtered prediction sample by applying filtering to the prediction sample on the basis of the filtering reference samples. According to the present invention, a prediction sample can be adaptively filtered according to the intra prediction mode, and intra prediction performance can be improved.

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：US20180309984A1

公开(公告)日：2018-10-25

申请号：US15768992

申请日：2016-09-27

Applicant: LG ELECTRONICS INC.

Inventor： Eunyong SON ,  Jin HEO ,  Seoungwook PARK ,  Sehoon YEA

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52

Abstract: An image decoding method, which is performed by a decoding device according to the present invention, comprises the steps of: acquiring the information on an intra-prediction mode of a current block from a received bit stream; deriving neighboring reference samples of the current block; deriving a first prediction value for a current sample of the current block on the basis of the intra-prediction mode and the neighboring reference samples; deriving a second prediction value for the current sample on the basis of adjacent samples of the current sample; and deriving a prediction value for the current sample on the basis of the first prediction value and the second prediction value. According to the present invention, the intra-prediction value can be derived on the basis of the adjacent samples of the current sample within the present block, and the intra-prediction accuracy can be improved therethrough.

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：US20180295384A1

公开(公告)日：2018-10-11

申请号：US15762946

申请日：2016-09-08

Applicant: LG ELECTRONICS INC.

Inventor： Eunyong SON ,  Jin HEO ,  Seungwook PARK ,  Sehoon YEA

IPC: H04N19/61 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/44 ,  H04N19/96

CPC classification number: H04N19/61 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/44 ,  H04N19/96

Abstract: An intra prediction method includes: receiving intra prediction mode information through a bitstream; deriving an intra prediction mode of a current block as a first intra directional mode on the basis of the intra prediction mode information; deriving first neighboring samples of the current block; deriving a reference sample adjacent to a target sample in the current block on the basis of a prediction direction of the first intra directional mode; deriving second neighboring samples of a neighboring block to which the reference sample belongs; determining a modified prediction direction on the basis of a comparison between the reference sample and at least one of the second neighboring samples; and deriving a prediction value for the target sample on the basis of the modified prediction direction and the first neighboring samples.

公开(公告)号：US20180213224A1

公开(公告)日：2018-07-26

申请号：US15746139

申请日：2016-04-22

Applicant: LG Electronics Inc.

Inventor： Eunyong SON ,  Yongjoon JEON ,  Jin HEO ,  Seungwook PARK ,  Moonmo KOO ,  Hyeongmoon JANG

IPC: H04N19/11 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96 ,  H04N19/52

CPC classification number: H04N19/11 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/593 ,  H04N19/96

Abstract: An intra prediction method performed by a decoding device, according to the present invention, comprises the steps of: deriving an intra prediction mode for a current block; deriving neighboring samples of the current block; and generating a prediction sample for the current block by using at least one of the neighboring samples according to the intra prediction mode, wherein the derived neighboring samples include left neighboring samples, upper left neighboring samples, upper neighboring samples, right neighboring samples, lower right neighboring samples, and lower neighboring samples of the current block. According to the present invention, intra prediction performance can be improved by using expanded neighboring reference samples, and coding efficiency for CUs can be improved.

公开(公告)号：US20180041768A1

公开(公告)日：2018-02-08

申请号：US15553078

申请日：2016-02-15

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Sehoon YEA ,  Eunyong SON ,  Jin HEO

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/132

CPC classification number: H04N19/513 ,  H04N19/103 ,  H04N19/117 ,  H04N19/119 ,  H04N19/124 ,  H04N19/132 ,  H04N19/14 ,  H04N19/17 ,  H04N19/176 ,  H04N19/52 ,  H04N19/537 ,  H04N19/70 ,  H04N19/96

Abstract: A polygon unit-based image processing method, and a device for the same are disclosed. Specifically, a method for decoding an image on the basis of a polygon unit can comprise the steps of: deriving a motion vector predictor for a polygon apex forming the polygon unit; deriving a motion vector for the polygon apex on the basis of a motion vector difference for the polygon apex and the motion vector predictor; and deriving a prediction sample for the polygon unit from a division unit, which is specified by the motion vector, in a reference picture.

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。

公开(公告)号：US20160249066A1

公开(公告)日：2016-08-25

申请号：US15026152

申请日：2014-10-20

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Sunmi YOO ,  Sehoon YEA

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/117 ,  H04N19/91

CPC classification number: H04N19/597 ,  H04N19/117 ,  H04N19/176 ,  H04N19/463 ,  H04N19/513 ,  H04N19/70 ,  H04N19/82 ,  H04N19/91

Abstract: The present invention relates to a method and an apparatus for coding a multi-view video, and a decoding apparatus according to the present invention comprises: an entropy-decoding unit for entropy-decoding a bitstream and decoding information related to residual prediction by referencing neighboring blocks of a current block; a memory for saving pictures referenced when decoding the current block; a prediction unit for inducing a prediction sample of the current block, based on the difference between sample values of a first block and a second block corresponding to the current block, from among the pictures saved to the memory, by using the residual-related information; and a filtering unit for applying filtering to a current picture restored by using the prediction sample.

Abstract translation: 本发明涉及一种用于编码多视点视频的方法和装置，以及根据本发明的解码装置，包括：熵解码单元，用于对比特流进行熵解码，并通过参考邻域解码与剩余预测相关的信息 当前块的块; 用于保存解码当前块时参考的图像的存储器; 基于与当前块对应的第一块和第二块的采样值之间的差异，通过使用剩余相关信息，从保存到存储器的图像中，感应当前块的预测样本的预测单元 ; 以及滤波单元，用于对通过使用预测样本恢复的当前图像应用滤波。