Title:
AMVR-BASED IMAGE CODING METHOD AND APPARATUS IN IMAGE CODING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/052009
Kind Code:
A1
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.
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Inventors:
JANG HYEONGMOON (KR)
LIM JAEHYUN (KR)
PARK SEOUNGWOOK (KR)
YEA SEHOON (KR)
LIM JAEHYUN (KR)
PARK SEOUNGWOOK (KR)
YEA SEHOON (KR)
Application Number:
PCT/KR2016/002161
Publication Date:
March 30, 2017
Filing Date:
March 03, 2016
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/503; H04N19/139; H04N19/52
Foreign References:
| JP2012186760A | 2012-09-27 | |||
| US20130003849A1 | 2013-01-03 | |||
| JP2013005169A | 2013-01-07 | |||
| US20120093226A1 | 2012-04-19 |
Other References:
LEE, DONG SIK ET AL.: "Efficient Coding of Motion Vector and Mode Information for H.264/AVC", JOURNAL OF KOREA MULTIMEDIA SOCIETY, vol. 11, no. 10, 3 August 2008 (2008-08-03), pages 1359 - 1365, XP026719301
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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