公开(公告)号：US20190320200A1

公开(公告)日：2019-10-17

申请号：US16340617

申请日：2017-08-30

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/59 ,  H04N19/132

Abstract: An image decoding method performed by a decoding apparatus according to the present invention comprises: a step of deriving an intra prediction mode for a current block; a step of deriving upper neighboring samples of a plurality of rows for the current block, and left neighboring samples of a plurality of columns; a step of deriving one row of upper reference samples on the basis of the upper neighboring samples; a step of deriving one column of left reference samples on the basis of the left neighboring samples; and a step of generating a prediction sample for the current block by using at least one of the upper reference samples and the left reference samples in accordance with the intra prediction mode.

公开(公告)号：US20190200011A1

公开(公告)日：2019-06-27

申请号：US16331497

申请日：2016-09-08

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jin HEO

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/82 ,  H04N19/159

CPC classification number: H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/80 ,  H04N19/82

Abstract: Disclosed are an intra-prediction mode-based image processing method and an apparatus therefor. Particularly, the intra-prediction mode-based image processing method may comprise the steps of: generating a predicted sample of a current block on the basis of an intra-prediction mode of the current block; calculating the distance between the predicted sample and a first reference sample used to generate the predicted sample; and when the distance between the predicted sample and the first reference sample is larger than a filtering reference value, filtering the predicted sample by a weighted addition of the predicted sample and a second reference sample, wherein, among reference samples adjacent to the current block, at least one of a reference sample having the same horizontal coordinate component as the predicted sample and a reference sample having the same vertical coordinate component as the predicted sample is used as the second reference sample.

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。