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：US20190238882A1

公开(公告)日：2019-08-01

申请号：US16332735

申请日：2017-09-21

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Sunmi YOO

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

Abstract: An inter-prediction method according to the present invention comprises the steps of: deriving a first motion vector of a current block; deriving a first reference block with respect to a current subunit of the current block on the basis of the first motion vector, the current subunit being adjacent to a target boundary of the current block; deriving a second reference block with respect to the current subunit on the basis of a second motion vector of a neighboring block adjacent to the target boundary; and generating prediction samples on the basis of an illumination compensation (IC)-based weighted sum of the first reference block and second reference block. The present invention enables reduction of the amount of data of additional information as well as efficient illumination compensation-based inter-prediction and block boundary error reduction.

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：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：US20180131943A1

公开(公告)日：2018-05-10

申请号：US15570139

申请日：2016-04-27

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Seungwook PARK ,  Jaehyun LIM ,  Chulkeun KIM ,  Jungdong SEO ,  Sunmi YOO ,  Junghak NAM

IPC: H04N19/159 ,  H04N19/139 ,  H04N19/126 ,  H04N19/122 ,  H04N19/96 ,  H04N19/109

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/126 ,  H04N19/139 ,  H04N19/513 ,  H04N19/537 ,  H04N19/86 ,  H04N19/96

Abstract: The present invention relates to method and device for decoding a bitstream for a video signal, the method comprising the steps of: obtaining a predicted value for a current block on the basis of a moving vector of the current block; and restoring the current block on the basis of the predicted value for the current block. In case a particular condition is satisfied, the step of obtaining the predicted value for the current block comprises: obtaining of a first predicted value by applying, to an area located at a particular boundary of the current block, a motion vector of a neighboring block adjacent to the area; obtaining of a second predicted value by applying a motion vector of the current block to the area; and obtaining of a weighted sum by applying a first weight to the first predicted value and by applying a second weight to the second predicted value.

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：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.

公开(公告)号：US20170180755A1

公开(公告)日：2017-06-22

申请号：US15118392

申请日：2015-03-10

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Junghak NAM ,  Sehoon YEA

IPC: H04N19/597 ,  H04N19/513 ,  H04N19/172 ,  H04N19/176 ,  H04N19/105 ,  H04N19/139

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/30 ,  H04N19/517 ,  H04N19/521 ,  H04N2013/0085

Abstract: The present invention provides a 3D video decoding method and device. A 3D video decoding method according to the present invention comprises the steps of: determining whether to apply motion vector inheritance for inducing a motion vector of a depth picture, using motion information of a texture picture; when it is determined to apply the motion vector inheritance, inducing a current block within the depth picture to a sub-block sized depth sub-block for the motion vector inheritance; inducing a motion vector of the depth sub-block from a texture block within the texture picture corresponding to the depth sub-block; and inducing a reconstructed sample of the current block by generating a prediction sample of the depth sub-block on the basis of the motion vector of the depth sub-block.

公开(公告)号：US20170150178A1

公开(公告)日：2017-05-25

申请号：US15319335

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/597 ,  H04N19/124 ,  H04N19/44 ,  H04N19/51 ,  H04N19/172

CPC classification number: H04N19/597 ,  H04N19/124 ,  H04N19/17 ,  H04N19/172 ,  H04N19/44 ,  H04N19/51

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: obtaining a disparity value on the basis of a reference view and a predetermined value; deriving movement information of a current block in a depth picture on the basis of the disparity value; and generating a prediction sample of the current block on the basis of the movement information, wherein the reference view is a view of a reference picture in a reference picture list. According to the present invention, even when a base view cannot be accessed, a disparity vector can be derived on the basis of an available reference view index in a decoded picture buffer (DPB), and coding efficiency can be enhanced.