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Paper Abstract and Keywords
Presentation 2016-06-16 16:40
A generation scheme of random unitary matrices for template protection
Yuko Saito, Sayaka Shiota, Hitoshi Kiya (Tokyo Metropolitan Univ.) CAS2016-14 VLD2016-20 SIP2016-48 MSS2016-14
Abstract (in Japanese) (See Japanese page) 
(in English) Random unitary matrices-based template protection methods have been proposed as one of biometric template protection schemes.
In the prior studies, a template is protected by two matrices, i.e, an unitary matrix with fixed values and one with random values.
These methods have lower calculation costs than these of the Gram-Schmidt orthogonalization, and can also generate integer protected templates.
However, these methods have been pointed out that the cross matching performance and the randomness of a protected template depend on the combination of random unitary matrices.
In this study,to overcome these problems, we propose a new generation method of a random unitary matrix.
In the proposed method, a template is protected by three matrices, i.e, an unitary matrix with fixed values and two unitary matrix with random values.
In addition, we propose to use a permutation matrix having plus or minus sign in a random order as a random matrix.
We perform some face recognition experiments to evaluate the cross matching performance and the randomness of a protected template and show the effectiveness of the proposed scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) Biometrics / Template protection / random unitary matrices / / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 95, SIP2016-48, pp. 73-78, June 2016.
Paper # SIP2016-48 
Date of Issue 2016-06-09 (CAS, VLD, SIP, MSS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Conference Information
Committee VLD CAS MSS SIP  
Conference Date 2016-06-16 - 2016-06-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Hirosaki Shiritsu Kanko-kan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) System, signal processing and related topics 
Paper Information
Registration To SIP 
Conference Code 2016-06-VLD-CAS-MSS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A generation scheme of random unitary matrices for template protection 
Sub Title (in English)  
Keyword(1) Biometrics  
Keyword(2) Template protection  
Keyword(3) random unitary matrices  
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1st Author's Name Yuko Saito  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
2nd Author's Name Sayaka Shiota  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
3rd Author's Name Hitoshi Kiya  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
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Speaker Author-1 
Date Time 2016-06-16 16:40:00 
Presentation Time 20 minutes 
Registration for SIP 
Paper # CAS2016-14, VLD2016-20, SIP2016-48, MSS2016-14 
Volume (vol) vol.116 
Number (no) no.93(CAS), no.94(VLD), no.95(SIP), no.96(MSS) 
Page pp.73-78 
#Pages
Date of Issue 2016-06-09 (CAS, VLD, SIP, MSS) 


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