公开(公告)号：US20200021806A1

公开(公告)日：2020-01-16

申请号：US16507558

申请日：2019-07-10

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  H04N19/46

Abstract: Provided is a video decoding method performed by a decoding apparatus, which includes: obtaining intra prediction information of the current block through a bitstream; deriving MPM (Most Probable Mode) list including MPM candidates of the current block; when a value of a MPM flag is 0, deriving an intra prediction mode of the current block based on the remaining intra prediction mode information, in which the intra prediction mode is one of remaining intra prediction modes excluding the MPM candidates; deriving a prediction sample of the current block based on the intra prediction mode; and deriving a reconstructed picture based on the prediction sample, in which the intra prediction information includes the MPM flag, the intra prediction information includes the remaining intra prediction mode information when the value of the MPM flag is 0, the MPM flag is coded through a fixed length (FL) binarization process, a binarization parameter for the FL binarization process is 1, the remaining intra prediction mode information is coded through a truncated binary (TB) binarization process, and a binarization parameter for the TB binarization process is 60.

公开(公告)号：US20190273926A1

公开(公告)日：2019-09-05

申请号：US16336830

申请日：2017-08-31

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Hyeongmoon JANG

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/91

Abstract: The intra prediction method according to the present invention comprises the steps of: deriving an intra prediction mode of a current block; deriving neighboring reference samples of the current block; and generating a prediction sample of the current block on the basis of linear interpolation of a first neighboring reference sample positioned in the prediction direction of the intra prediction mode, and a second neighboring reference sample positioned in the opposite direction of the prediction direction, among the neighboring reference samples of the current block, wherein the neighboring reference samples include left neighboring reference samples, left upper neighboring reference samples, upper neighboring reference samples, right neighboring reference samples, right lower neighboring reference samples, and lower neighboring reference samples of the current block. The present invention can improve intra prediction performance, and thereby reduce the amount of data required for residual information and increase the overall coding efficiency.

公开(公告)号：US20190238863A1

公开(公告)日：2019-08-01

申请号：US16338583

申请日：2017-08-14

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Hyeongmoon JANG ,  Jin HEO

IPC: H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: The present invention provides a method for decoding a chroma block of a video signal, comprising the steps of: inducing division information of a luma block, wherein the division information of the luma block includes split depth information of the luma block; parsing depth inheritance information of the chroma block from a video signal, wherein the depth inheritance information indicates the degree of use of the split depth information of the luma block; inducing division information of the chroma block on the basis of the split depth information of the luma block and/or the depth inheritance information, wherein the division information of the chroma block includes split depth information of the chroma block; and decoding the chroma block on the basis of the division information of the chroma block.

公开(公告)号：US20180310000A1

公开(公告)日：2018-10-25

申请号：US15762958

申请日：2016-09-23

Applicant: LG Electronics Inc.

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

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/11 ,  H04N19/593

CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/146 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61

Abstract: An image decoding method, which is performed by a decoding apparatus, includes the steps of: deriving a frequency domain-neighboring block for a neighboring block of a current block in a spatial domain; deriving a frequency domain-prediction block for the current block by applying a prediction pattern to the frequency domain-neighboring block; generating a frequency domain-reconstructed block for the current block on the basis of the frequency domain-prediction block; and generating a reconstructed block for the current block in the spatial domain on the basis of the frequency inverse transform of the frequency domain-reconstructed block. The present invention can generate a prediction block for a current block in a frequency domain, and accordingly can more efficiently reconstruct a complex image.

公开(公告)号：US20180249156A1

公开(公告)日：2018-08-30

申请号：US15758275

申请日：2016-09-02

Applicant: LG Electronics Inc.

Inventor： Jin HEO ,  Seungwook PARK ,  Eunyong SON ,  Naeri PARK

IPC: H04N19/105 ,  H04N19/147 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/103 ,  H04N19/129 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176 ,  H04N19/59 ,  H04N19/70 ,  H04N19/82

Abstract: The present invention provides a method for processing an image based on a Joint inter-intra prediction mode and an apparatus for the same. Particularly, the method may include deriving a prediction mode of a current block; generating an inter-prediction block of the current block and an intra-prediction block of the current block, when the prediction mode of the current block is a Joint inter-intra prediction mode; and generating a joint inter-intra prediction block by combining the inter-prediction block and the intra-prediction block.

公开(公告)号：US20180184082A1

公开(公告)日：2018-06-28

申请号：US15736415

申请日：2016-06-14

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jin HEO ,  Yongjoon JEON ,  Eunyong SON ,  Junghak NAM

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/107 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593

Abstract: Disclosed are an intra prediction mode based image processing method, and an apparatus therefor. In particular, a method for processing an image on the basis of an intra prediction mode comprises the steps of: inputting, in most probable mode (MPM) candidates, intra prediction modes of a plurality of neighboring blocks which neighbor a current block, and then deriving the MPM candidates by inputting, in the MPM candidates, intra prediction modes within substitute modes consisting of a plurality of intra prediction modes, to which priorities are given, according to the priorities until the total number of MPM candidates is satisfied; deriving, from the MPM candidates, an intra prediction mode applied to the current block using an MPM index indicating a specific intra prediction mode; and generating a prediction block of the current block by applying the derived intra prediction mode.

公开(公告)号：US20180124397A1

公开(公告)日：2018-05-03

申请号：US15565092

申请日：2015-11-09

Applicant: LG Electronics Inc.

Inventor： Sunmi YOO ,  Jin HEO ,  Junghak NAM ,  Jaehyun LIM ,  Yongjoon JEON

IPC: H04N19/109 ,  H04N19/107 ,  H04N19/119 ,  H04N19/96 ,  H04N19/176

CPC classification number: H04N19/109 ,  H04N19/107 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70 ,  H04N19/96

Abstract: A method for decoding a video signal includes obtaining block partition information of a current coding unit; deriving an intra prediction mode of a partition block based on the block partition information; and generating a prediction signal of the partition block based on the derived intra prediction mode, and the intra prediction mode of the partition block is defined by a limited number based on a prediction direction.

公开(公告)号：US20180048915A1

公开(公告)日：2018-02-15

申请号：US15553975

申请日：2015-11-24

Applicant: LG Electronics Inc.

Inventor： Yongjoon JEON ,  Jin HEO ,  Sunmi YOO ,  Seungwook PARK

IPC: H04N19/61 ,  H04N19/44 ,  H04N19/105 ,  H04N19/70 ,  H04N19/176 ,  H04N19/107

CPC classification number: H04N19/61 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/14 ,  H04N19/176 ,  H04N19/45 ,  H04N19/70

Abstract: A method for encoding a video signal includes determining a dominant prediction direction of a current block using information of a neighboring block; determining a number of intra prediction modes to transmit based on the dominant prediction direction; determining an optimal intra prediction mode based on the number of intra prediction modes; and generating a prediction signal according to the optimal intra prediction mode.

公开(公告)号：US20180041760A1

公开(公告)日：2018-02-08

申请号：US15550721

申请日：2016-02-04

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Jin HEO ,  Eunyong SON ,  Sehoon YEA ,  Seungwook PARK ,  Kyuwoon KIM ,  Bumshik LEE

IPC: H04N19/14 ,  H04N19/61

Abstract: The present invention provides a method of decoding a video signal using graph-based transform comprising the steps: extracting prediction unit partition information of a current coding unit from the video signal; obtaining a graph-based transform kernel from predetermined table information based on the prediction unit partition information; and performing an inverse-transform of a transform unit using the graph-based transform kernel, wherein the graph-based transform kernel corresponds to at least one of the prediction unit partition information and an edge weight, and the edge weight is a predetermined value representing a correlation between pixels.

公开(公告)号：US20180027236A1

公开(公告)日：2018-01-25

申请号：US15551516

申请日：2016-02-17

Applicant: LG Electronics Inc.

Inventor： Yongjoon JEON ,  Jin HEO ,  Sunmi YOO

IPC: H04N19/129 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/129 ,  H04N19/12 ,  H04N19/159 ,  H04N19/17 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/70 ,  H04N19/96

Abstract: A method for decoding a video signal including extracting an intra prediction mode of a current block from the video signal; generating a prediction block based on scan order information corresponding to the intra prediction mode; and reconstructing the current block by using the generated prediction block and a residual block, and the scan order information is determined based on a direction of the intra prediction mode.