Anti-Spoof Reliable Biometry of Fingerprints Using En-Face Optical Coherence Tomography

Mohammad-Reza Nasiri-Avanaki, Alexander Meadway, Adrian Bradu, Rohollah Mazrae Khoshki, Ali Hojjatoleslami, Adrian Gh. Podoleanu

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DOI: 10.4236/opj.2011.13015                

Abstract

Optical coherence tomography (OCT) is a relatively new imaging technology which can produce high resolution images of three-dimensional structures. OCT has been mainly used for medical applications such as for ophthalmology and dermatology. In this study we demonstrate its capability in providing much more reliable biometry identification of fingerprints than conventional methods. We prove that OCT can serve secure control of genuine fingerprints as it can detect if extra layers are placed above the finger. This can prevent with a high probability, intruders to a secure area trying to foul standard systems based on imaging the finger surface. En-Face OCT method is employed and recommended for its capability of providing not only the axial succession of layers in depth, but the en-face image that allows the traditional pattern identification. Another reason for using such OCT technology is that it is compatible with dynamic focus and therefore can provide enhanced transversal resolution and sensitivity. Two En-Face OCT systems are used to evaluate the need for high resolution and conclusions are drawn in terms of the most potential commercial route to ex- ploitation.

Keywords

Optical Coherence Tomography, En-Face OCT, Fingerprints, Biometry, High Resolution

Conflicts of Interest

The authors declare no conflicts of interest.

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