公开(公告)号：US20210084331A1

公开(公告)日：2021-03-18

申请号：US17103333

申请日：2020-11-24

Applicant: LG Electronics Inc.

Inventor： Jaehyun LIM ,  Seungwook PARK ,  Yongjoon JEON ,  Jungsun KIM ,  Hendry HENDRY ,  Byeongmoon JEON ,  Joonyoung PARK ,  Chulkeun KIM ,  Naeri PARK

IPC: H04N19/593 ,  H04N19/426 ,  H04N19/176 ,  H04N19/11 ,  H04N19/463 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/44 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/96

Abstract: A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the plurality of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.

公开(公告)号：US20210067795A1

公开(公告)日：2021-03-04

申请号：US17098886

申请日：2020-11-16

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seungwook PARK ,  Byeongmoon JEON ,  Joonyoung PARK ,  Jungsun KIM ,  Sangoh JEONG ,  Chulkeun KIM

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/43 ,  H04N19/895 ,  H04N19/68 ,  H04N19/63 ,  H04N19/61 ,  H04N19/593 ,  H04N19/33 ,  H04N19/59 ,  H04N19/174 ,  H04N19/503

Abstract: The present invention relates to an inter-layer prediction method and to an apparatus implementing the method. The method may comprise the steps of generating a first block constituted by the value obtained by up-sampling the reconstruction value of a reference block of a reference layer corresponding to the current block; generating a second block constituted by a prediction value derived from intra-prediction mode of the current block; and generating a prediction block of the current block by combining sample values of the first block and the second block. Thus, intra-prediction on the current layer can be performed using the intra-prediction mode information of another layer.

公开(公告)号：US20200228835A1

公开(公告)日：2020-07-16

申请号：US16835894

申请日：2020-03-31

Applicant: LG ELECTRONICS INC.

Inventor： Joonyoung PARK ,  Seungwook PARK ,  Jaehyun LIM ,  Jungsun KIM ,  Younghee CHOI ,  Byeongmoon JEON ,  Yongjoon JEON

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/117

Abstract: The present invention relates to an intra-prediction method and to an encoder and decoder using same. The intra-prediction method according to one embodiment of the present invention comprises the steps of deriving a prediction mode of a current block; and generating a prediction block with respect to the current block on the basis of the prediction mode of the current block. When the prediction mode of the current block is an intra-angular prediction mode, values of boundary samples from among left boundary samples and upper boundary samples of the prediction block, which are not positioned in a prediction direction of the intra-angular prediction mode, are derived on the basis of reference samples positioned in the prediction direction of the intra-angular prediction mode, and on the basis of adjacent reference samples.

公开(公告)号：US20200077108A1

公开(公告)日：2020-03-05

申请号：US16677192

申请日：2019-11-07

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seungwook PARK ,  Byeongmoon JEON ,  Joonyoung PARK ,  Jungsun KIM ,  Sangoh JEONG ,  Chulkeun KIM

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/43 ,  H04N19/895 ,  H04N19/68 ,  H04N19/63 ,  H04N19/61 ,  H04N19/593 ,  H04N19/33 ,  H04N19/59 ,  H04N19/174 ,  H04N19/503

Abstract: The present invention relates to an inter-layer prediction method and to an apparatus implementing the method. The method may comprise the steps of generating a first block constituted by the value obtained by up-sampling the reconstruction value of a reference block of a reference layer corresponding to the current block; generating a second block constituted by a prediction value derived from intra-prediction mode of the current block; and generating a prediction block of the current block by combining sample values of the first block and the second block. Thus, intra-prediction on the current layer can be performed using the intra-prediction mode information of another layer.

公开(公告)号：US20190174142A1

公开(公告)日：2019-06-06

申请号：US16251018

申请日：2019-01-17

Applicant: LG ELECTRONICS INC.

Inventor： Yongjoon JEON ,  Seungwook PARK ,  Jaehyun LIM ,  Jungsun KIM ,  Joonyoung PARK ,  Younghee CHOI ,  Jaewon SUNG ,  Byeongmoon JEON

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/11 ,  H04N19/91 ,  H04N19/61 ,  H04N19/85 ,  H04N19/80 ,  H04N19/182 ,  H04N19/117

Abstract: Disclosed are an intra-prediction method using filtering and an apparatus using the method. An image-decoding method comprises: a step of filtering an n upper reference pixel of a block to be predicted and neighboring pixels of the n upper reference pixel so as to obtain the filtered n upper reference pixel; and a step of filtering an n left reference pixel of a block to be predicted and neighboring pixels of the n left reference pixel so as to obtain the filtered n left reference pixel. According to the present invention, intra-prediction may be efficiently performed to improve image-encoding/decoding efficiency.

公开(公告)号：US20190149826A1

公开(公告)日：2019-05-16

申请号：US16244848

申请日：2019-01-10

Applicant: LG Electronics Inc.

Inventor： Jaehyun LIM ,  Byeongmoon JEON ,  Yongjoon JEON ,  Seungwook PARK ,  Jungsun KIM ,  Joonyoung PARK ,  Hendry HENDRY ,  Naeri PARK ,  Chulkeun KIM

IPC: H04N19/136 ,  H04N19/44 ,  H04N19/50 ,  H04N19/91 ,  H04N19/96

Abstract: The present invention relates to an entropy decoding method which includes: generating context related to a bin that forms a codeword of a syntax element; and performing arithmetic decoding of the bin based on the context.

公开(公告)号：US20180367809A1

公开(公告)日：2018-12-20

申请号：US16113703

申请日：2018-08-27

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Joonyoung PARK ,  Yongjoon JEON ,  Byeongmoon JEON ,  Jungsun KIM ,  Jaehyun LIM ,  Chulkeun KIM ,  Naeri PARK ,  Seungwook PARK

IPC: H04N19/436 ,  H04N19/70 ,  H04N19/174 ,  H04N19/119

CPC classification number: H04N19/436 ,  H04N19/119 ,  H04N19/174 ,  H04N19/70

Abstract: The present invention relates to a video encoding method, a video decoding method, and a device using the same, and the video encoding method according to the present invention comprises the steps of: specifying a tile and a slice by partitioning an inputted picture; performing encoding on the basis of the tile and the slice; and transmitting the encoded video information, wherein the picture is partitioned into one or more tiles and one or more slices, and the restrictions for parallel processing can be applied to the tiles and the slices.

公开(公告)号：US20180332294A1

公开(公告)日：2018-11-15

申请号：US16042696

申请日：2018-07-23

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyun LIM ,  Jungsun KIM ,  Seungwook PARK ,  Jaewon SUNG ,  Byeongmoon JEON ,  Joonyoung PARK ,  Yongjoon JEON ,  Younghee CHOI

IPC: H04N19/159 ,  H04N19/154 ,  H04N19/182 ,  H04N19/463 ,  H04N19/11 ,  H04N19/593 ,  H04N19/61 ,  H04N19/196 ,  H04N19/46 ,  H04N19/176 ,  H04N19/105 ,  H04N19/18 ,  H04N19/59 ,  H04N19/513 ,  H04N19/50 ,  H04N19/14

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/50 ,  H04N19/513 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61

Abstract: A method and apparatus for signaling and receiving a video signal for processing is disclosed. Methods for determining a most probable mode for predicting a current prediction block are provided as well as new methods for grouping intra prediction modes into prediction groups. Methods for predicting a prediction block of video data as well as signaling intra prediction modes are also provided.

公开(公告)号：US20180288442A1

公开(公告)日：2018-10-04

申请号：US15996877

申请日：2018-06-04

Applicant: LG ELECTRONICS INC.

Inventor： Seungwook PARK ,  Jungsun KIM ,  Yongjoon JEON ,  Joonyoung PARK ,  Byeongmoon JEON ,  Jaehyun LIM

IPC: H04N19/80 ,  H04N19/44 ,  H04N19/13 ,  H04N19/82 ,  H04N19/70 ,  H04N19/61 ,  H04N19/50 ,  H04N19/117 ,  H04N19/186 ,  H04N19/132 ,  H04N19/126 ,  H04N19/98

CPC classification number: H04N19/80 ,  H04N19/117 ,  H04N19/126 ,  H04N19/13 ,  H04N19/132 ,  H04N19/186 ,  H04N19/44 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/98

Abstract: The present invention relates to a method for encoding and decoding image information and to an apparatus using same, and the method for encoding the image information, according to the present invention, comprises the steps of: generating a recovery block; applying a deblocking filter to the recovery block; applying a sample adaptive offset (SAO) to the recovery block to which the deblocking filter is applied; and transmitting the image information including information on the SAO which is applied, wherein in the step of transmitting, information for specifying bands that cover a scope of a pixel value, to which a band off set is applied, is transmitted when the band offset is applied during the step of applying the SAO.

公开(公告)号：US20180288409A1

公开(公告)日：2018-10-04

申请号：US15764685

申请日：2016-09-30

Applicant: LG ELECTRONICS INC.

Inventor： Jin Heo ,  Eunyong Son ,  Jaeho Lee ,  Seungwook PARK ,  Sehoon Yea ,  Junghak Nam

IPC: H04N19/105 ,  H04N19/124 ,  H04N19/176 ,  H04N19/44 ,  H04N19/61 ,  H04N19/18

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/44 ,  H04N19/61 ,  H04N19/70 ,  H04N19/90

Abstract: An image decoding method according to the present invention comprises the steps of: deriving quantized transform coefficients by unit of sub-blocks in a transform unit on the basis of residual information included in a bitstream; deriving transform coefficients on the basis of the quantized transform coefficients; generating a residual sample on the basis of the transform coefficients; generating a prediction sample on the basis of an inter prediction or an intra prediction; and restoring an image on the basis of the residual sample and the prediction sample. According to the present invention, a quantity of data required for a residual signal can be reduced, and an overall coding efficiency can be improved.