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Paper Abstract and Keywords
Presentation 2012-03-16 17:15
Liveness Detection Method for Iris Recognition Using the Shadow Variation of Iris Edge
Hironobu Takano, Wataru Hayasaki, Kiyomi Nakamura (Toyama Pref. Univ.) MBE2011-149
Abstract (in Japanese) (See Japanese page) 
(in English) A novel liveness detection method using the shadow around the iris edge depending on the directions of near-infrared illumination is developed. Iris recognition system is vulnerable to deception by fake irises although iris recognition is the most reliable method in biometrics. To overcome such a problem, various liveness detection methods have been proposed: the fast Fourier spectrum method, corneal reflection method, etc. However, these liveness detection methods accept an imposter as a legitimate person by using simple methods with a printed iris image. In this study, to develop the novel liveness detection method, the brightness variation in the iris edge was investigated by changing the direction of near-infrared illuminations. From the experimental results, the suitable combinations of the directions of near-infrared illuminations were $0^\circ$, $45^\circ$ and $75^\circ$. The brightness variation rates were calculated between $0^\circ$ and $45^\circ$ as $f^{45}_{avg}$, and between $0^\circ$ and $75^\circ$ as $f^{75}_{avg}$. The $f^{45}_{avg}$ in the live iris was between $4.63\%$ and $18.23\%$. While, the $f^{75}_{avg}$ in the live iris was over $18.23\%$. For the fake iris, on the other hand, the brightness variation rates for both $f^{45}_{avg}$ and $f^{75}_{avg}$ were less than $3\%$. Thus, the fake iris can be detected by using the difference of brightness variation rates between the live and fake irises.
Keyword (in Japanese) (See Japanese page) 
(in English) Liveness detection / Iris recognition / Fake iris / Shadow variation / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 482, MBE2011-149, pp. 219-224, March 2012.
Paper # MBE2011-149 
Date of Issue 2012-03-07 (MBE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 MBE2011-149

Conference Information
Committee MBE NC  
Conference Date 2012-03-14 - 2012-03-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MBE 
Conference Code 2012-03-MBE-NC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Liveness Detection Method for Iris Recognition Using the Shadow Variation of Iris Edge 
Sub Title (in English)  
Keyword(1) Liveness detection  
Keyword(2) Iris recognition  
Keyword(3) Fake iris  
Keyword(4) Shadow variation  
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1st Author's Name Hironobu Takano  
1st Author's Affiliation Toyama Prefectural University (Toyama Pref. Univ.)
2nd Author's Name Wataru Hayasaki  
2nd Author's Affiliation Toyama Prefectural University (Toyama Pref. Univ.)
3rd Author's Name Kiyomi Nakamura  
3rd Author's Affiliation Toyama Prefectural University (Toyama Pref. Univ.)
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Speaker Author-1 
Date Time 2012-03-16 17:15:00 
Presentation Time 25 minutes 
Registration for MBE 
Paper # MBE2011-149 
Volume (vol) vol.111 
Number (no) no.482 
Page pp.219-224 
#Pages 6 
Date of Issue 2012-03-07 (MBE) 

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