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Proceedings Paper

Extended depth-of-field iris recognition system for a workstation environment
Author(s): Ramkumar Narayanswamy; Paulo E. X. Silveira; Harsha Setty; V. Paul Pauca; Joseph van der Gracht
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Paper Abstract

Iris recognition imaging is attracting considerable interest as a viable alternative for personal identification and verification in many defense and security applications. However current iris recognition systems suffer from limited depth of field, which makes usage of these systems more difficult by an untrained user. Traditionally, the depth of field is increased by reducing the imaging system aperture, which adversely impacts the light capturing power and thus the system signal-to-noise ratio (SNR). In this paper we discuss a computational imaging system, referred to as Wavefront Coded(R) imaging, for increasing the depth of field without sacrificing the SNR or the resolution of the imaging system. This system employs a especially designed Wavefront Coded lens customized for iris recognition. We present experimental results that show the benefits of this technology for biometric identification.

Paper Details

Date Published: 28 March 2005
PDF: 10 pages
Proc. SPIE 5779, Biometric Technology for Human Identification II, (28 March 2005); doi: 10.1117/12.603612
Show Author Affiliations
Ramkumar Narayanswamy, CDM Optics, Inc. (United States)
Paulo E. X. Silveira, CDM Optics, Inc. (United States)
Harsha Setty, Wake Forest Univ. (United States)
V. Paul Pauca, Wake Forest Univ. (United States)
Joseph van der Gracht, HoloSpex, Inc. (United States)


Published in SPIE Proceedings Vol. 5779:
Biometric Technology for Human Identification II
Anil K. Jain; Nalini K. Ratha, Editor(s)

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