公开(公告)号：US20200053389A1

公开(公告)日：2020-02-13

申请号：US16594660

申请日：2019-10-07

Applicant: LG Electronics Inc.

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

IPC: H04N19/593

Abstract: An image decoding method according to the present invention comprises the steps o£ acquiring information to form a reference picture set of a current picture by entropy decoding the received bitstream information; and performing prediction on a prediction block inside the current picture by using a reference picture list which is formed based on the reference picture set.

公开(公告)号：US20190342576A1

公开(公告)日：2019-11-07

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 ,  H04N19/513 ,  H04N19/184 ,  H04N19/172 ,  H04N19/52 ,  H04N19/593 ,  H04N19/176 ,  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.

公开(公告)号：US20190268621A1

公开(公告)日：2019-08-29

申请号：US16411283

申请日：2019-05-14

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

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：US20190268620A1

公开(公告)日：2019-08-29

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

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：US20180352261A1

公开(公告)日：2018-12-06

申请号：US16056087

申请日：2018-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Yongjoon JEON ,  Chulkeun KIM ,  Sangoh JEONG ,  Byeongmoon JEON ,  Jungsun KIM

IPC: H04N19/70 ,  H04N21/2387 ,  H04N19/50 ,  H04N19/46 ,  H04N19/31 ,  H04N19/44 ,  H04N19/169

CPC classification number: H04N19/70 ,  H04N19/188 ,  H04N19/31 ,  H04N19/44 ,  H04N19/46 ,  H04N19/50 ,  H04N21/2387

Abstract: Disclosed are a method and apparatus for encoding/decoding images. The image-decoding method comprises the steps of: receiving a bit stream including information regarding an NAL unit type; and checking whether or not the NAL unit in the bit stream is a reference picture based on said information regarding an NAL unit type and decoding the NAL unit. The information regarding an NAL unit type indicates whether the NAL unit is a reference reading picture or not a reference reading picture.

公开(公告)号：US20180302616A1

公开(公告)日：2018-10-18

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 ,  H04N19/124 ,  H04N19/122

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：US20180278940A1

公开(公告)日：2018-09-27

申请号：US15762323

申请日：2016-09-23

Applicant: LG Electronics Inc.

Inventor： Seungwook PARK ,  Hyeongmoon JANG ,  Yongjoon JEON

IPC: H04N19/159 ,  H04N19/136 ,  H04N19/109 ,  H04N19/172 ,  H04N19/176

CPC classification number: H04N19/159 ,  H04N19/109 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/52 ,  H04N19/523 ,  H04N19/59

Abstract: The present invention provides an image encoding/decoding method and a device for same. In particular, the image decoding method may comprise the steps of: determining if the properties of a current picture and a reference picture differ; converting the reference picture to have the same properties as the current picture when the properties of the current picture and reference picture differ; and performing inter-prediction on the current picture by predetermined block unit by means of the converted reference picture.

公开(公告)号：US20180227594A1

公开(公告)日：2018-08-09

申请号：US15945390

申请日：2018-04-04

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/52 ,  H04N19/50 ,  H04N19/176 ,  H04N19/513 ,  H04N19/109 ,  H04N19/577 ,  H04N19/11 ,  H04N19/51

CPC classification number: H04N19/52 ,  H04N19/109 ,  H04N19/11 ,  H04N19/176 ,  H04N19/426 ,  H04N19/463 ,  H04N19/50 ,  H04N19/51 ,  H04N19/521 ,  H04N19/577

Abstract: A motion information storing method and a TMVP deriving method using the motion information storing method are provided. The motion information storing method includes a step of determining a representative block out of blocks of a motion data storage unit in a co-located picture with a current picture and a step of storing motion information of the representative block as motion information of the motion data storage unit, wherein the motion information of the representative block is used as motion information of the blocks included in the motion data storage unit.

公开(公告)号：US20180227582A1

公开(公告)日：2018-08-09

申请号：US15942897

申请日：2018-04-02

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/139 ,  H04N19/51 ,  H04N19/56 ,  H04N19/513 ,  H04N19/167 ,  H04N19/61 ,  H04N19/105 ,  H04N19/96 ,  H04N19/159

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/51 ,  H04N19/521 ,  H04N19/56 ,  H04N19/61 ,  H04N19/96

Abstract: The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.

公开(公告)号：US20180220149A1

公开(公告)日：2018-08-02

申请号：US15750093

申请日：2016-07-15

Applicant: LG Electronics Inc.

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

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/159 ,  H04N19/44

Abstract: A video decoding method performed by a decoding device includes: deriving control points (CPs) for a current block; acquiring motion vectors for the CPs; deriving a sample-unit motion vector in the current block based on the acquired motion vectors; deriving a prediction sample for the current block based on the sample-unit motion vector; and generating a restoration sample based on the prediction sample, wherein coordinates of a bottom-right sample position of the current block are (0, 0), and coordinates of CP0 among the CPs are (0, 0). Inter prediction is effectively performed through sample-unit motion vectors even when an image in a current block is planarly moved and variously changed, and since motion vectors for CPs are derived based on already-decoded neighboring blocks, an amount of information for the motion vectors for the CPs and for a residual signal for the current block is reduced, improving overall coding efficiency.