Document Type

Journal Article

Department/Unit

Department of Computer Science

Title

A hybrid approach for generating secure and discriminating face template

Language

English

Abstract

Biometric template protection is one of the most important issues in deploying a practical biometric system. To tackle this problem, many algorithms, that do not store the template in its original form, have been reported in recent years. They can be categorized into two approaches, namely biometric cryptosystem and transform-based. However, most (if not all) algorithms in both approaches offer a trade-off between the template security and matching performance. Moreover, we believe that no single template protection method is capable of satisfying the security and performance simultaneously. In this paper, we propose a hybrid approach which takes advantage of both the biometric cryptosystem approach and the transform-based approach. A three-step hybrid algorithm is designed and developed based on random projection, discriminability-preserving (DP) transform, and fuzzy commitment scheme. The proposed algorithm not only provides good security, but also enhances the performance through the DP transform. Three publicly available face databases, namely FERET, CMU-PIE, and FRGC, are used for evaluation. The security strength of the binary templates generated from FERET, CMU-PIE, and FRGC databases are 206.3, 203.5, and 347.3 bits, respectively. Moreover, noninvertibility analysis and discussion on data leakage of the proposed hybrid algorithm are also reported. Experimental results show that, using Fisherface to construct the input facial feature vector (face template), the proposed hybrid method can improve the recognition accuracy by 4%, 11%, and 15% on the FERET, CMU-PIE, and FRGC databases, respectively. A comparison with the recently developed random multispace quantization biohashing algorithm is also reported. © 2010 IEEE.

Keywords

Biometric data security, Face recognition, Face template protection, Fisherface

Publication Date

2010

Source Publication Title

IEEE Transactions on Information Forensics and Security

Volume

5

Issue

1

Start Page

103

End Page

117

Publisher

Institute of Electrical and Electronics Engineers

DOI

10.1109/TIFS.2009.2038760

Link to Publisher's Edition

http://dx.doi.org/10.1109/TIFS.2009.2038760

ISSN (print)

15566013

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