公开(公告)号：US20210112255A1

公开(公告)日：2021-04-15

申请号：US17100011

申请日：2020-11-20

Applicant: LG ELECTRONICS INC.

Inventor： Jin Heo ,  Yongjoon Jeon ,  Sunmi Yoo ,  Eunyong Son ,  Junghak Nam

IPC: H04N19/159 ,  H04N19/107 ,  H04N19/593 ,  H04N19/176 ,  H04N19/119

Abstract: In the present invention, a method for processing an image on the basis of an intra prediction mode and an apparatus therefor are disclosed. Particularly, the method for processing an image on the basis of an intra prediction mode may comprise the steps of: partitioning a block to be processed, on the basis of an intra prediction mode of the block to be processed; and performing intra prediction for the split block to be processed, wherein the direction in which the block to be processed is split is perpendicular to the prediction direction of the intra prediction mode of the block to be processed.

公开(公告)号：US20210084305A1

公开(公告)日：2021-03-18

申请号：US17104082

申请日：2020-11-25

Applicant: LG ELECTRONICS INC.

Inventor： Jangwon Choi ,  Jin Heo ,  Sunmi Yoo ,  Ling Li

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/196

Abstract: A method for decoding a picture based on a cross-component linear model (CCLM) mode includes deriving neighboring luma reference samples of a luma block, deriving down-sampled neighboring luma reference samples, deriving a linear model parameter based on the down-sampled neighboring luma reference samples and the neighboring chroma reference samples, where the neighboring luma reference samples includes top neighboring luma reference samples, and left neighboring luma reference samples, and where when the top boundary of the luma block overlaps with a boundary of a coding tree unit (CTU), the number of the top neighboring luma reference samples used for deriving the down-sampled neighboring luma reference samples among the neighboring luma reference samples is less than that of the left neighboring luma reference samples used for deriving the down-sampled neighboring luma reference samples.

公开(公告)号：US20210076027A1

公开(公告)日：2021-03-11

申请号：US16953519

申请日：2020-11-20

Applicant: LG ELECTRONICS INC.

Inventor： Seunghwan Kim ,  Sunmi Yoo ,  Ling Li ,  Jaehyun Lim ,  Jangwon Choi ,  Jungah Choi ,  Jin Heo

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

Abstract: According to the present disclosure, a video decoding method performed by a video decoding device includes parsing remaining intra prediction mode information for a current block, deriving neighboring samples of the current block, deriving MPM list including MPM candidates of the current block, deriving an intra prediction mode of the current block based on the remaining intra prediction mode information, wherein 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 the neighboring samples, and deriving a reconstructed picture based on the prediction sample, wherein the remaining intra prediction mode information is coded through a truncated binary (TB) binarization process, and wherein a binarization parameter for the TB binarization process is 60.

公开(公告)号：US20200252616A1

公开(公告)日：2020-08-06

申请号：US16856406

申请日：2020-04-23

Applicant: LG Electronics Inc.

Inventor： Jungah CHOI ,  Seunghwan Kim ,  Sunmi Yoo ,  Jangwon Choi ,  Jin Heo

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

Abstract: A method for decoding an image by a decoding device according to the present disclosure comprises the steps of: receiving a bit stream including residual information; deriving a quantized conversion factor of a current block on the basis of the residual information included in the bit stream; deriving a residual sample of the current block on the basis of the quantized conversion factor; and generating a reconstructed picture on the basis of the residual sample of the current block.

公开(公告)号：US20200036970A1

公开(公告)日：2020-01-30

申请号：US16591238

申请日：2019-10-02

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Jaeho Lee ,  Jangwon Choi ,  Jungdong Seo ,  Jin Heo

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/117 ,  H04N19/82

Abstract: A method by which a decoding device performs image decoding, according to the present invention, comprises the steps of: deriving an intra prediction mode of a current block; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving reference samples for prediction of a target sample among the neighboring samples on the basis of the position of the target sample of the current block and the prediction angle of the intra prediction mode; determining an interpolation filter for the target sample; and deriving the prediction sample of the target sample on the basis of the interpolation filter and the reference samples.

公开(公告)号：US10419779B2

公开(公告)日：2019-09-17

申请号：US15111735

申请日：2015-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Junghak Nam ,  Sehoon Yea

IPC: H04N19/597 ,  H04N13/00 ,  H04N19/70 ,  H04N19/172 ,  H04N19/176 ,  H04N13/128 ,  H04N19/174 ,  H04N13/194

Abstract: The present invention relates to a device and a method for coding a 3D video, a decoding method, according to the present invention, comprising the steps of: receiving, through a first syntax, a camera parameter for switching a depth value into a disparity value; determining whether the camera parameter which applies to a previous slice or picture applies to a current slice or picture; and if the camera parameter applies to a current slice or picture, deriving a disparity value of a current block on the basis of the camera parameter. According to the present invention, slices or pictures of a certain interval may share the same camera parameter, the transmission of overlapping information may be prevented, and coding efficiency may be improved.