Title:
IMAGE DECODING DEVICE AND IMAGE ENCODING DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/203981
Kind Code:
A1
Abstract:
According to the present invention, efficient encoding/decoding processing is achieved by combining a method of reducing residual information of a partial region and a method of switching, through slice division and quad-tree division, between a conversion block and a prediction block having a high degree of freedom. This image decoding device which decodes a picture by dividing the picture into encoding tree block units, comprises an encoding tree dividing unit that recursively divides the encoding tree block as an encoding tree of a root, wherein the device is provided with a CU division flag decoding unit that decodes an encoding unit division flag indicating whether to divide the encoding tree or not, and a residual mode decoding unit that decodes a residual mode indicating whether a residual of the encoding tree or lower is to be decoded in a first mode or in a second mode different from the first mode.
Inventors:
IKAI TOMOHIRO
TSUKUBA TAKESHI
TSUKUBA TAKESHI
Application Number:
PCT/JP2016/066495
Publication Date:
December 22, 2016
Filing Date:
June 02, 2016
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H04N19/70; H04N19/59; H04N19/96
Domestic Patent References:
| WO2013109631A1 | 2013-07-25 |
Foreign References:
| JP2009522941A | 2009-06-11 |
Other References:
TOURAPIS, ALEXIS MICHAEL ET AL.: "Reduced Resolution Update Mode for Enhanced Compression", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU-T SG 16 WP3 AND ISO/IEC JTC1/SC29/WG11 8TH MEETING JCTVC-H0447, 1 February 2012 (2012-02-01), San Jose, CA , USA, XP030051848
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation HARAKENZO WORLD PATENT & TRADEMARK (JP)
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