Extended depth-of-field iris recognition system for a workstation environment

Ramkumar Narayanswamy; Paulo E. X. Silveira; Harsha Setty; V. Paul Pauca; Joseph van der Gracht

doi:10.1117/12.603612

28 March 2005 Extended depth-of-field iris recognition system for a workstation environment

Ramkumar Narayanswamy, Paulo E. X. Silveira, Harsha Setty, V. Paul Pauca, Joseph van der Gracht

Proceedings Volume 5779, Biometric Technology for Human Identification II; (2005) https://doi.org/10.1117/12.603612
Event: Defense and Security, 2005, Orlando, Florida, United States

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.

Citation Download Citation

Ramkumar Narayanswamy, Paulo E. X. Silveira, Harsha Setty, V. Paul Pauca, and Joseph van der Gracht "Extended depth-of-field iris recognition system for a workstation environment", Proc. SPIE 5779, Biometric Technology for Human Identification II, (28 March 2005); https://doi.org/10.1117/12.603612

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