METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL BY USING SUBBLOCK-BASED MOTION COMPENSATION

Title:

METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL BY USING SUBBLOCK-BASED MOTION COMPENSATION

Document Type and Number:

WIPO Patent Application WO/2020/085800

Kind Code:

A1

Abstract:

Disclosed is a video signal processing method and device for encoding or decoding a video signal. Specifically, the video signal processing method may comprise the steps of: acquiring a first syntax element indicating whether a subblock-based merging mode is applied to a current block; acquiring a second syntax element indicating whether a merging mode using motion vector difference is applied to the current block, when the first syntax element indicates that the subblock-based merging mode is not applied to the current block; acquiring a third syntax element indicating a candidate to be used in inter-prediction for the current block, among candidates contained in a mergence candidate list for the current block, when the second syntax element indicates that the merging mode using motion vector difference is applied to the current block; acquiring information related to the motion vector difference; deriving a motion vector for the current block by adding the motion vector difference to a motion vector for the candidate indicated by the third syntax element; and generating a prediction block for the current block by using the motion vector for the current block.

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Inventors:

KO GEONJUNG (KR)
KIM DONGCHEOL (KR)
SON JUHYUNG (KR)
JUNG JAEHONG (KR)
KWAK JINSAM (KR)

Application Number:

PCT/KR2019/014016

Publication Date:

April 30, 2020

Filing Date:

October 23, 2019

Export Citation:

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Assignee:

WILUS INST STANDARDS & TECH INC (KR)
HUMAX CO LTD (KR)

International Classes:

H04N19/11; H04N19/105; H04N19/119; H04N19/124; H04N19/157; H04N19/159; H04N19/176; H04N19/593; H04N19/625; H04N19/70

Domestic Patent References:

WO2017171107A1	2017-10-05
WO2018066927A1	2018-04-12

Foreign References:

KR20130050407A

2013-05-16

Other References:

HAN, YU ET AL.: "CE4.2.16: Sub-block merge candidates in BMS and JEM", JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11. JVET-K0338 . 11TH MEETING, 18 July 2018 (2018-07-18), Ljubljana, SI, pages 1 - 5, XP030198910
YU , RUOYANG ET AL.: "Non-CE4: On maximum number of subblock merge candidates", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JT C 1/SC 29/WG 11. JVET-O0220. 5TH MEETING, 12 July 2019 (2019-07-12), Gothenburg, SE, pages 1 - 3, XP030218889
See also references of EP 3873093A4

Attorney, Agent or Firm:

LIM, Kukil (KR)

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