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Paper Abstract and Keywords
Presentation 2007-07-19 17:00
A study on information content of biometrics
Kenta Takahashi, Hideitsu Hino, Takao Murakami (Hitachi Ltd.) ISEC2007-43 SITE2007-37
Abstract (in Japanese) (See Japanese page) 
(in English) Due to the high security and convenience, biometric authentication is used at access control, ATM and many kinds of identity verification. In this paper, we consider the information amount of a biometric feature such as a fingerprint or a vein pattern in the sense of personal-identifying information. Firstly, we define the amount of personal-identifying information contained in a biometric feature by mutual information. Then we show that the mutual information can be approximated asymptotically by Kullback-Leibler divergence between the genuine score distribution $f_G(x)$ and the imposter score distribution $f_I(x)$. We propose to use this KL divergence as a metrics of biometric information in a certain biometric identification system. It is also discussed about the relationship between the metrics and ROC curve, information of multimodal biometrics, and possible application of the metrics to privacy protecting biometric technologies. Finally some methods for experimental estimation of biometric information based on the metrics are described.
Keyword (in Japanese) (See Japanese page) 
(in English) biometrics / information / metrics / multi-modal biometrics / privacy protecting biometrics / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 140, ISEC2007-43, pp. 193-200, July 2007.
Paper # ISEC2007-43 
Date of Issue 2007-07-12 (ISEC, SITE) 
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 ISEC2007-43 SITE2007-37

Conference Information
Conference Date 2007-07-19 - 2007-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Future University-Hakodate 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2007-07-ISEC-SITE-IPSJ-CSEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on information content of biometrics 
Sub Title (in English)  
Keyword(1) biometrics  
Keyword(2) information  
Keyword(3) metrics  
Keyword(4) multi-modal biometrics  
Keyword(5) privacy protecting biometrics  
1st Author's Name Kenta Takahashi  
1st Author's Affiliation Systems Development Laboratory, Hitachi Ltd. (Hitachi Ltd.)
2nd Author's Name Hideitsu Hino  
2nd Author's Affiliation Systems Development Laboratory, Hitachi Ltd. (Hitachi Ltd.)
3rd Author's Name Takao Murakami  
3rd Author's Affiliation Systems Development Laboratory, Hitachi Ltd. (Hitachi Ltd.)
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Date Time 2007-07-19 17:00:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2007-43,IEICE-SITE2007-37 
Volume (vol) IEICE-107 
Number (no) no.140(ISEC), no.139(SITE) 
Page pp.193-200 
#Pages IEICE-8 
Date of Issue IEICE-ISEC-2007-07-12,IEICE-SITE-2007-07-12 

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