公开(公告)号：US11057618B2

公开(公告)日：2021-07-06

申请号：US16694769

申请日：2019-11-25

Applicant: LG Electronics Inc.

Inventor： Jaehyun Lim ,  Jungsun Kim ,  Seungwook Park ,  Jaewon Sung ,  Byeongmoon Jeon ,  Joonyoung Park ,  Yongjoon Jeon ,  Younghee Choi

IPC: H04N19/105 ,  H04N19/573 ,  H04N19/50 ,  H04N19/176 ,  H04N19/513 ,  H04N19/56 ,  H04N19/139 ,  H04N19/577

Abstract: The present invention relates to a method and apparatus for encoding or decoding a video signal. According to the present invention, a plurality of reference units for image prediction of the current unit is acquired and combined to obtain a unit prediction value, thereby improving the accuracy of image prediction. More particularly, the present invention relates to a method for inducing a variety of reference units using a motion vector prediction value or a motion vector which is used in conventional inter-prediction, and also relates to a method which combines the reference units so as to obtain the prediction value for the current unit. In addition, the present invention relates to a method which involves acquiring a plurality of reference units for a merging mode, and combining the reference units so as to perform image prediction.

公开(公告)号：US11051041B2

公开(公告)日：2021-06-29

申请号：US16534693

申请日：2019-08-07

Applicant: LG Electronics Inc.

Inventor： Jaehyun Lim ,  Seungwook Park ,  Yongjoon Jeon ,  Chulkeun Kim ,  Jungsun Kim ,  Naeri Park ,  Hendry Hendry ,  Byeongmoon Jeon ,  Joonyoung Park

IPC: H04N19/61 ,  H04N19/86 ,  H04N19/82 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182

Abstract: A method for image decoding, according to the present invention, includes the following steps: receiving image information including a plurality of filter coefficients; generating a restored block for a current block on the basis of the image information; and applying an adaptive loop filter to the restored block on the basis of the plurality of filter coefficients. According to the present invention, image encoding efficiency may be improved, and complexity may be reduced.

公开(公告)号：US11032564B2

公开(公告)日：2021-06-08

申请号：US16676135

申请日：2019-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Joonyoung Park ,  Sangchul Kim ,  Seungwook Park ,  Jaehyun Lim ,  Yongjoon Jeon ,  Byeongmoon Jeon ,  Younghee Choi ,  Jaewon Sung ,  Jungsun Kim ,  Jingyeong Kim ,  Taeil Chung

IPC: H04N19/513 ,  H04N19/51 ,  H04N19/105 ,  H04N19/176 ,  H04N19/167 ,  H04N19/583

Abstract: The method for deriving a temporal motion vector predictor according to the present invention comprises the steps of: selecting a reference picture for a current block; deciding a predictor block corresponding to a predetermined storage unit block, as a reference prediction unit for the current block, in the reference picture; and deriving the temporal motion vector predictor from motion information of the decided reference prediction unit. The present invention enhances image compression efficiency.

公开(公告)号：US20210112274A1

公开(公告)日：2021-04-15

申请号：US17132378

申请日：2020-12-23

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：US20200336761A1

公开(公告)日：2020-10-22

申请号：US16922830

申请日：2020-07-07

Applicant: LG ELECTRONICS INC.

Inventor： Joonyoung Park ,  Seungwook Park ,  Jaehyun Lim ,  Jungsun Kim ,  Younghee Choi ,  Jaewon Sung ,  Byeongmoon Jeon ,  Yongjoon Jeon

IPC: H04N19/55 ,  H04N19/52 ,  H04N19/61 ,  H04N19/176 ,  H04N19/593 ,  H04N19/625 ,  H04N19/172 ,  H04N19/184 ,  H04N19/513

Abstract: The present invention relates to a method and apparatus for processing a video signal, which can increase the accuracy of the motion vector prediction through motion vector scaling which takes a difference in the temporal distance between reference pictures into consideration. To this end, the present invention provides a video signal processing method and a video signal processing apparatus using the same, and the method comprises the steps of: scaling at least one neighboring partition motion vector for a motion vector prediction of the current partition; scaling the neighboring partition motion vector, which has been selected, when the reference picture of the neighboring partition motion vector is different from the reference picture of the current partition; acquiring a motion vector prediction value of the current partition using the scaled motion vector; and acquiring a motion vector of the current partition using the motion vector prediction value.

公开(公告)号：US10791337B2

公开(公告)日：2020-09-29

申请号：US16406810

申请日：2019-05-08

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry ,  Seungwook Park ,  Jaehyun Lim ,  Yongjoon Jeon ,  Chulkeun Kim ,  Jungsun Kim ,  Naeri Park ,  Byeongmoon Jeon ,  Joonyoung Park

IPC: H04N19/46 ,  H04N19/577 ,  H04N19/503 ,  H04N19/70 ,  H04N19/423 ,  H04N19/573 ,  H04N19/44

Abstract: The present invention relates to a method for signaling image information and to a decoding method using same. The method for signaling image information according to the present invention comprises: a step of performing inter-prediction for a current picture; and a step of signaling information including the result of said inter-prediction and reference picture information indicating reference pictures usable in said inter prediction, wherein said reference picture information contains pieces of picture order count (POC) information of said usable reference pictures. The POC information of said usable reference pictures in said reference picture information is configured such that POCs for the pictures existing before said current picture in terms of a POC sequence are located at the front, and POCs for the pictures existing after said current picture in terms of a POC sequence are located following the POCs located at the front.

公开(公告)号：US10743021B2

公开(公告)日：2020-08-11

申请号：US16513198

申请日：2019-07-16

Applicant: LG ELECTRONICS INC.

Inventor： Joonyoung Park ,  Seungwook Park ,  Jaehyun Lim ,  Jungsun Kim ,  Younghee Choi ,  Jaewon Sung ,  Byeongmoon Jeon ,  Yongjoon Jeon

IPC: H04N19/55 ,  H04N19/52 ,  H04N19/61 ,  H04N19/176 ,  H04N19/593 ,  H04N19/625 ,  H04N19/172 ,  H04N19/184 ,  H04N19/513

Abstract: The present invention relates to a method and apparatus for processing a video signal, which can increase the accuracy of the motion vector prediction through motion vector scaling which takes a difference in the temporal distance between reference pictures into consideration. To this end, the present invention provides a video signal processing method and a video signal processing apparatus using the same, and the method comprises the steps of: scaling at least one neighboring partition motion vector for a motion vector prediction of the current partition; scaling the neighboring partition motion vector, which has been selected, when the reference picture of the neighboring partition motion vector is different from the reference picture of the current partition; acquiring a motion vector prediction value of the current partition using the scaled motion vector; and acquiring a motion vector of the current partition using the motion vector prediction value.

公开(公告)号：US10721467B2

公开(公告)日：2020-07-21

申请号：US15569597

申请日：2016-04-22

Applicant: LG Electronics Inc.

Inventor： Eunyong Son ,  Seoungwook Park ,  Yongjoon Jeon ,  Moonmo Koo

IPC: H04N19/107 ,  H04N19/13 ,  H04N19/122 ,  H04N19/124 ,  H04N19/70 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46

Abstract: A method for decoding a picture, according to the present invention, comprises the steps of: receiving split flag information and merge flag information; splitting a coding unit (CU) of one or more depths n into CUs of depth n+1, on the basis of the split flag information; generating a merged CU by combining parts of the CUs of the depth n+1, on the basis of the merge flag information; and performing a decoding procedure for generating a restoration picture, on the basis of the generated merge CU. According to the present invention, a decoding procedure can be performed by merging CUs having similar characteristics, and thus auxiliary information to be received and processed is reduced and coding efficiency is improved.

公开(公告)号：US10681364B2

公开(公告)日：2020-06-09

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 ,  H04N19/174 ,  H04N19/119 ,  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：US10531084B2

公开(公告)日：2020-01-07

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: H04N11/02 ,  H04N19/105 ,  H04N19/176 ,  H04N19/107 ,  H04N19/159 ,  H04N19/593 ,  H04N19/11

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.