公开(公告)号：US20180167629A1

公开(公告)日：2018-06-14

申请号：US15892650

申请日：2018-02-09

Applicant: LG ELECTRONICS INC.

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

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

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

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：US20180139453A1

公开(公告)日：2018-05-17

申请号：US15552160

申请日：2016-03-10

Applicant: LG Electronics Inc.

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

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/96 ,  H04N19/91

CPC classification number: H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96

Abstract: The present invention relates to a method for decoding a bitstream for a video signal, and a device for same, and to a method including the steps of: obtaining dividing mode information, which orders a dividing technique for a current block, from the bitstream, the dividing technique including a first technique in which the current block is not divided, a second technique in which the current block is divided in a vertical direction into 2 blocks, a third technique in which the current block is divided in a horizontal direction into 2 blocks, and a fourth technique in which the current block is divided in vertical and horizontal directions into 4 blocks; obtaining prediction mode information for the current block from the bitstream and decoding the current block on the basis of the prediction mode information, when the dividing mode information orders the first technique; and repeatedly dividing the current block when the dividing mode information orders the second technique, the third technique, or the fourth technique. The present invention relates to a device for said method.

公开(公告)号：US20180131945A1

公开(公告)日：2018-05-10

申请号：US15864475

申请日：2018-01-08

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/159 ,  H04N19/44 ,  H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/96

Abstract: A method for decoding an image according to the present invention comprises the steps of: receiving and decoding MPM index information for indicating an MPM candidate which is to be used as an intra prediction mode of a current block; generating an MPM candidate list containing a plurality of MPM candidates for the current block; determining the MPM candidate indicated by the decoded MPM index information as the intra prediction mode of the current block, among the plurality of the MPM candidates which constitute the MPM candidate list; and generating a prediction block corresponding to the current block by performing intra prediction for the current block based on the determined 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：US20180109808A1

公开(公告)日：2018-04-19

申请号：US15845690

申请日：2017-12-18

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

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/426 ,  H04N19/44 ,  H04N19/463 ,  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：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：US20180041760A1

公开(公告)日：2018-02-08

申请号：US15550721

申请日：2016-02-04

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Jin HEO ,  Eunyong SON ,  Sehoon YEA ,  Seungwook PARK ,  Kyuwoon KIM ,  Bumshik LEE

IPC: H04N19/14 ,  H04N19/61

Abstract: The present invention provides a method of decoding a video signal using graph-based transform comprising the steps: extracting prediction unit partition information of a current coding unit from the video signal; obtaining a graph-based transform kernel from predetermined table information based on the prediction unit partition information; and performing an inverse-transform of a transform unit using the graph-based transform kernel, wherein the graph-based transform kernel corresponds to at least one of the prediction unit partition information and an edge weight, and the edge weight is a predetermined value representing a correlation between pixels.

公开(公告)号：US20170142440A1

公开(公告)日：2017-05-18

申请号：US15421528

申请日：2017-02-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/577 ,  H04N19/44 ,  H04N19/573

CPC classification number: H04N19/577 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/573 ,  H04N19/70

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 tents 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：US20170105016A1

公开(公告)日：2017-04-13

申请号：US15387727

申请日：2016-12-22

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/44 ,  H04N19/174 ,  H04N19/503

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

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：US20170019681A1

公开(公告)日：2017-01-19

申请号：US15280755

申请日：2016-09-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/55 ,  H04N19/513 ,  H04N19/184 ,  H04N19/172 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/55 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625

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.

Abstract translation: 本发明涉及一种用于处理视频信号的方法和装置，其可以通过考虑到参考图像之间的时间距离的差异的运动矢量缩放来增加运动矢量预测的精度。 为此，本发明提供了一种视频信号处理方法和使用该视频信号处理方法的视频信号处理装置，该方法包括以下步骤：缩放当前分区的运动矢量预测的至少一个相邻分区运动矢量; 当相邻分区运动矢量的参考图片与当前分区的参考图片不同时，缩放已经选择的相邻分区运动矢量; 使用所述缩放的运动矢量获取所述当前分区的运动矢量预测值; 以及使用运动矢量预测值来获取当前分区的运动矢量。