公开(公告)号：US20210360226A1

公开(公告)日：2021-11-18

申请号：US17276786

申请日：2019-09-19

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jin HEO

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/117 ,  H04N19/82 ,  H04N19/176

Abstract: An image decoding method according to the present document comprises the steps of: generating a prediction sample for the current block on the basis of an intra prediction mode for the current block and neighboring reference samples; and generating a reconstructed picture for the current block on the basis of the prediction sample, wherein, when the reference sample position indicated by a prediction direction of a directional prediction mode of the current block from the position of the prediction sample is the fractional sample position, the prediction sample is derived from among the neighboring reference samples by interpolating with respect to specific neighboring reference samples located around the fractional sample position, when the specific neighboring reference samples include outer neighboring reference samples located at (2*nW+1, −1) and (2*nW+2, −1) positions, the values of the outer neighboring reference samples are set to be equal to the value of a sample located at (2*nW, −1), and nW may indicate the width of the current block.

公开(公告)号：US20210344907A1

公开(公告)日：2021-11-04

申请号：US17374274

申请日：2021-07-13

Applicant: LG Electronics Inc.

Inventor： Jin HEO ,  Sunmi YOO ,  Ling LI ,  Jangwon CHOI ,  Jungah CHOI

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

Abstract: An image decoding method includes: configuring a MPM list including candidate intra prediction modes for a current block; deriving an intra prediction mode of the current block from the MPM list on the basis of MPM index information indicating an intra prediction mode, among the candidate intra prediction modes included in the MPM list, for the current block; generating prediction samples for the current block on the basis of the intra prediction mode; and generating a reconstructed picture for the current block on the basis of the prediction samples, wherein the step for configuring the MPM list comprises, on the basis of the case where the value of reference line index information, representing a reference line used for the intra prediction of the current block, is not zero, deriving a DC mode as one mode among the candidate intra prediction modes, and including same in the MPM list.

公开(公告)号：US20200252615A1

公开(公告)日：2020-08-06

申请号：US16855785

申请日：2020-04-22

Applicant: LG ELECTRONICS INC.

Inventor： Jungah CHOI ,  Seunghwan KIM ,  Jin HEO ,  Sunmi YOO ,  Ling LI ,  Jangwon CHOI

IPC: H04N19/132 ,  H04N19/60 ,  H04N19/129 ,  H04N19/46 ,  H04N19/176

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure includes receiving a bitstream including residual information; deriving quantized transform coefficients for a current block based on the residual information included in the bitstream; deriving transform coefficients for the current block from the quantized transform coefficients based on an inverse quantization process; deriving residual samples for the current block by applying inverse transform to the derived transform coefficients; and generating a reconstructed picture based on the residual samples for the current block.

公开(公告)号：US20190335170A1

公开(公告)日：2019-10-31

申请号：US16475306

申请日：2018-01-03

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE ,  Seunghwan KIM ,  Sunmi YOO

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

Abstract: The present invention provides a method of decoding a video signal comprising a current block using an affine mode, including parsing a skip flag or a merge flag from the video signal, identifying whether the sample number or size of the current block satisfies a preset condition if a skip mode or a merge mode is applied based on the skip flag or merge flag, parsing an affine flag if the condition is satisfied, wherein the affine flag indicates whether an affine prediction mode is applied, and the affine prediction mode indicates a mode deriving a motion vector in a pixel or subblock unit using a control point motion vector, and determining an affine merge mode as an optimal prediction mode if the affine prediction mode is applied based on the affine flag.

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：US20190191156A1

公开(公告)日：2019-06-20

申请号：US16301088

申请日：2016-05-12

Applicant: LG Electronics Inc.

Inventor： Sunmi YOO ,  Bumshik LEE

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/46 ,  H04N19/124

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/124 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/192 ,  H04N19/46 ,  H04N19/593

Abstract: According to the present invention, a picture encoding method comprises the steps of: selecting a Vth basis function for a current block according to a specific order from among basis functions; deriving a Vth expansion coefficient on the basis of the selected Vth basis function; calculating a Vth weighted error criterion on the basis of the selected Vth basis function and the derived Vth expansion coefficient; and encoding and outputting information indicating the Vth number as a basis number when the value of the Vth weighted error criterion is less than a specific critical value. According to the present invention, more accurate intra prediction in a sample unit can be performed, and intra prediction performance can be significantly improved. In addition, according to the present invention, calculation complexity can be reduced, thereby enabling a data amount for a residual signal for a current block to be removed or reduced and the overall coding efficiency to be improved.

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：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：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。