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Paper Abstract and Keywords
Presentation 2015-05-22 15:25
3D CG Image Quality Metrics for the Contrast Enhancement of the Object Region Including S-CIELAB Color Space with 8 Viewpoints Parallax Barrier Method
Norifumi Kawabata, Masaru Miyao (Nagoya Univ.) IMQ2015-4
Abstract (in Japanese) (See Japanese page) 
(in English) Previously, there were many studies about the image quality evaluation based on S-CIELAB color space including the spatial frequency characteristics of human vision system. It is not obvious to what extent was accepted for the assessors when we see the 3D image which the luminance change may affect the stereoscopic effect and assessment generally. Similarly, it is not obvious when we see the multi-view 3D image. As represented by ROI (Region Of Interest), it is important where the assessors are interested in or focused on the part of the 3D image when they see the 3D image. Seeing the content creators, we consider that they create expecting for users to focus on the object region than the background region. Therefore, we considered that we need to verify by subjective evaluation experiment to what extent was not interfered with regard to the contrast enhancement and the coded degradation. Furthermore, we consider that we are able to become to carry out the general evaluation for the luminance component using both S-CIELAB color space and CIEDE2000, in addition to the subjective evaluation. In this paper, first, we carried out the subjective evaluation experiment for the contrast enhancement of the object region in an image with 8 viewpoints parallax barrier method. Next, we analyzed their results statistically using a Support Vector Machine (SVM). On the other hand, we evaluated objectively about luminance value measurement using CIEDE2000 in S-CIELAB color space. We considered whether the objective evaluation value related to the subjective evaluation value or not.
Keyword (in Japanese) (See Japanese page) 
(in English) Multi-view 3D Image / Luminance / Contrast Enhancement / Region Of Interest (ROI) / H.265/HEVC / S-CIELAB Color Space / CIEDE2000 /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 48, IMQ2015-4, pp. 17-22, May 2015.
Paper # IMQ2015-4 
Date of Issue 2015-05-15 (IMQ) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee IMQ  
Conference Date 2015-05-22 - 2015-05-22 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IMQ 
Conference Code 2015-05-IMQ 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 3D CG Image Quality Metrics for the Contrast Enhancement of the Object Region Including S-CIELAB Color Space with 8 Viewpoints Parallax Barrier Method 
Sub Title (in English)  
Keyword(1) Multi-view 3D Image  
Keyword(2) Luminance  
Keyword(3) Contrast Enhancement  
Keyword(4) Region Of Interest (ROI)  
Keyword(5) H.265/HEVC  
Keyword(6) S-CIELAB Color Space  
Keyword(7) CIEDE2000  
Keyword(8)  
1st Author's Name Norifumi Kawabata  
1st Author's Affiliation Nagoya University (Nagoya Univ.)
2nd Author's Name Masaru Miyao  
2nd Author's Affiliation Nagoya University (Nagoya Univ.)
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Speaker Author-1 
Date Time 2015-05-22 15:25:00 
Presentation Time 25 minutes 
Registration for IMQ 
Paper # IMQ2015-4 
Volume (vol) vol.115 
Number (no) no.48 
Page pp.17-22 
#Pages
Date of Issue 2015-05-15 (IMQ) 


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