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.

公开(公告)号：US20180270485A1

公开(公告)日：2018-09-20

申请号：US15761356

申请日：2016-03-03

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon JANG ,  Jaehyun LIM ,  Seungwook PARK ,  Sehoon YEA

IPC: H04N19/139 ,  H04N19/176 ,  H04N19/51

Abstract: An image encoding method according to the present invention, which is performed by an encoding apparatus, comprises the steps of: generating an adaptive motion vector range (AMVR) enable flag; deriving a motion vector difference (MVD) with respect to a current block; deriving a representative MVD value of an MVD range including a value of the MVD from among a plurality of MVD ranges; generating a coded MVD corresponding to the representative MVD value; and outputting the AMVR enable flag and the coded MVD through a bit stream. According to the present invention, the amount of bits allocated to an MVD can be reduced and the overall coding efficiency can thus be increased.

公开(公告)号：US20180249176A1

公开(公告)日：2018-08-30

申请号：US15557389

申请日：2015-10-28

Applicant: LG Electronics Inc.

Inventor： Jaehyun LIM ,  Seungwook PARK ,  Naeri PARK ,  Sunmi YOO

IPC: H04N19/58 ,  H04N19/139 ,  H04N19/11 ,  H04N19/119 ,  H04N19/176

CPC classification number: H04N19/58 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96

Abstract: The present invention provides a method for processing a video signal. The method includes: determining an optimal collocated picture based on the reference index of at least one of candidate blocks for predicting motion information of a current block; predicting motion information of the current block based on information of a collocated block within the optimal collocated picture; and generating a motion prediction signal based on the predicted motion information.

公开(公告)号：US20180242022A1

公开(公告)日：2018-08-23

申请号：US15962939

申请日：2018-04-25

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/86 ,  H04N19/134 ,  H04N19/136 ,  H04N19/176 ,  H04N19/61 ,  H04N19/14 ,  H04N19/196 ,  H04N19/172 ,  H04N19/159 ,  H04N19/117 ,  H04N19/60 ,  H04N19/82 ,  G06T5/00

CPC classification number: H04N19/86 ,  G06T5/001 ,  H04N7/26244 ,  H04N7/26888 ,  H04N7/30 ,  H04N7/50 ,  H04N19/117 ,  H04N19/134 ,  H04N19/136 ,  H04N19/14 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/60 ,  H04N19/61 ,  H04N19/82

Abstract: The present invention relates to a deblocking filtering method, a method for inducing bs (boundary strength) therefor, and a method and an apparatus for encoding/decoding using the same. The method for inducing the bS of the present invention comprises the steps of: inducing a boundary of a deblocking filtering unit block as a unit block for applying the deblocking filtering; and setting the bS according to each bS setting unit block within the deblocking filtering unit block, wherein the bS setting step can set a bS value for a target boundary corresponding to a boundary of the deblocking filtering unit block as the bs setting unit block

公开(公告)号：US20180241995A1

公开(公告)日：2018-08-23

申请号：US15755037

申请日：2016-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Eunyong SON ,  Jin HEO ,  Seungwook PARK ,  Yongjoon JEON ,  Moonmo KOO

IPC: H04N19/11 ,  H04N19/186 ,  H04N19/593 ,  H04N19/176

CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

Abstract: An intra prediction method according to the present invention comprises the steps of: acquiring information on a luma prediction mode of a current block and information on a chroma prediction mode of the current block from a bit stream; deriving a luma intra prediction mode of the current block on the basis of the information on the luma prediction mode; determining a chroma intra prediction mode of the current block on the basis of information on the luma intra prediction mode and the information on the chroma prediction mode; and generating a chroma prediction sample of the current block on the basis of the chroma intra prediction mode. According to the present invention, it is possible to reflect the difference between the ratio of the width to the height of a luma component and the ratio of the width to the height of a chroma component, and thus to more accurately perform intra prediction in units of samples and improve intra prediction performance.

公开(公告)号：US20180234697A1

公开(公告)日：2018-08-16

申请号：US15751077

申请日：2016-07-15

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon JANG ,  Eunyong SON ,  Moonmo KOO ,  Seungwook PARK ,  Yongjoon JEON

IPC: H04N19/56 ,  H04N19/176 ,  H04N19/513 ,  H04N19/66

CPC classification number: H04N19/56 ,  H04N19/105 ,  H04N19/124 ,  H04N19/176 ,  H04N19/182 ,  H04N19/503 ,  H04N19/513 ,  H04N19/66 ,  H04N19/70 ,  H04N19/91

Abstract: A video decoding method performed by a decoding apparatus includes the steps of: deriving control points (CP) for a current block; acquiring movement vectors for the CPs; deriving a sample unit movement vector in the current block on the basis of the acquired movement vectors; and deriving a prediction sample for the current block on the basis of the sample unit movement vector. According to the present invention, it is possible to effectively perform, through sample unit motion vectors, inter-prediction not only in a case where an image in the current block is plane-shifted but also in a case where there are various image distortions.

公开(公告)号：US20180199063A1

公开(公告)日：2018-07-12

申请号：US15915211

申请日：2018-03-08

Applicant: LG Electronics Inc.

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

IPC: H04N19/593 ,  H04N19/96 ,  H04N19/107 ,  H04N19/70 ,  H04N19/122 ,  H04N19/61 ,  H04N19/11 ,  H04N19/186 ,  H04N19/157 ,  H04N19/80 ,  H04N19/196 ,  H04N19/172 ,  H04N19/59 ,  H04N19/174 ,  H04N19/176

CPC classification number: H04N19/593 ,  H04N19/107 ,  H04N19/11 ,  H04N19/122 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/96

Abstract: A method for signalling an intra chroma prediction mode and a method for implementing the signalled intra chroma prediction mode, the intra chroma prediction mode taking an intropolation of previously predicted luma samples from neighboring blocks of video data to attain an intra chroma prediction of a current chroma prediction unit.

公开(公告)号：US20180048896A1

公开(公告)日：2018-02-15

申请号：US15552465

申请日：2016-02-19

Applicant: LG Electronics Inc.

Inventor： Seungwook PARK ,  Yongjoon JEON

IPC: H04N19/159 ,  H04N19/587 ,  H04N19/59

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593

Abstract: Disclosed is a method for processing an image on the basis of an intra-prediction mode and an apparatus therefor. The method for processing an image on the basis of an intra-prediction mode includes generating a prediction sample by performing intra-prediction on a processing block of the image, generating a sub-sampled prediction sample by sub-sampling the prediction sample, and generating an up-sampled prediction sample by up-sampling the sub-sampled reconstructed sample.

公开(公告)号：US20170214922A1

公开(公告)日：2017-07-27

申请号：US15463021

申请日：2017-03-20

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/159 ,  H04N19/57

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/43 ,  H04N19/436 ,  H04N19/52 ,  H04N19/57

Abstract: According to the present invention, an inter prediction method comprises the steps of: generating a merge candidate list for a block to be predicted, wherein the block is to correspond to a current prediction unit; deriving, on the basis of one of a plurality of merge candidates constituting the merge candidate list, motion information on the block to be predicted; and performing, on the basis of the derived motion information, a prediction on the block to be predicted so as to generate a prediction block corresponding to the current prediction unit.