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Paper Abstract and Keywords
Presentation 2008-03-12 15:00
A silicon retina system for color constancy
Kazuhiro Shimonomura, Yutaka Tanoue, Tetsuya Yagi (Osaka Univ.) NC2007-122
Abstract (in Japanese) (See Japanese page) 
(in English) We describe a silicon retina system for robust color detection against changes of
A present model for color constancy is based on Land's retinex theory and opponent color theory.
In this model, an input image is devided into red, green, and blue channels,
and received by the image sensors with a logarithmic response.
In each channel, the received image is filtered by a Laplacian-Gaussian spatial filter.
And then, the opposite color responses, namely red-green and yellow-blue, are calculated.
The specific color can be detected by specifying the area on the opponent color plane which is composed of
two opposite color responses.
We consider a hardware implementation of real time color vision system employing
three wide dynamic range silicon retinas and FPGA.
Keyword (in Japanese) (See Japanese page) 
(in English) Color constancy / silicon retina / retinex theory / opponent color theory / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 542, NC2007-122, pp. 61-66, March 2008.
Paper # NC2007-122 
Date of Issue 2008-03-05 (NC) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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)
Download PDF NC2007-122

Conference Information
Committee NC MBE  
Conference Date 2008-03-12 - 2008-03-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa Univ 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NC 
Conference Code 2008-03-NC-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A silicon retina system for color constancy 
Sub Title (in English)  
Keyword(1) Color constancy  
Keyword(2) silicon retina  
Keyword(3) retinex theory  
Keyword(4) opponent color theory  
1st Author's Name Kazuhiro Shimonomura  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Yutaka Tanoue  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Tetsuya Yagi  
3rd Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2008-03-12 15:00:00 
Presentation Time 20 minutes 
Registration for NC 
Paper # NC2007-122 
Volume (vol) vol.107 
Number (no) no.542 
Page pp.61-66 
Date of Issue 2008-03-05 (NC) 

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