Presentation	2012-03-16 Liveness Detection Method for Iris Recognition Using the Shadow Variation of Iris Edge Hironobu TAKANO, Wataru HAYASAKI, Kiyomi NAKAMURA,
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Abstract(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°, 45° and 75°. The brightness variation rates were calculated between 0° and 45° as f^<45>_, and between 0° and 75° as f^<75>_. The f^<45>_ in the live iris was between 4.63% and 18.23%. While, the f^<75>_ in the live iris was over 18.23%. For the fake iris, on the other hand, the brightness variation rates for both f^<45>_ and f^<75>_ 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.
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Keyword(in English)	Liveness detection / Iris recognition / Fake iris / Shadow variation
Paper #	MBE2011-149
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Conference Information
Committee	MBE
Conference Date	2012/3/7(1days)
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Paper Information
Registration To	ME and Bio Cybernetics (MBE)
Language	JPN
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
1st Author's Name	Hironobu TAKANO
1st Author's Affiliation	Graduate School of Engineering, Toyama Prefectural University()
2nd Author's Name	Wataru HAYASAKI
2nd Author's Affiliation	Graduate School of Engineering, Toyama Prefectural University
3rd Author's Name	Kiyomi NAKAMURA
3rd Author's Affiliation	Graduate School of Engineering, Toyama Prefectural University
Date	2012-03-16
Paper #	MBE2011-149
Volume (vol)	vol.111
Number (no)	482
Page	pp.pp.-
#Pages	6
Date of Issue