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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 11 — Oct. 22, 2008

Increasing the information acquisition volume in iris recognition systems

D. Shane Barwick  »View Author Affiliations

Applied Optics, Vol. 47, Issue 26, pp. 4684-4691 (2008)

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A significant hurdle for the widespread adoption of iris recognition in security applications is that the typically small imaging volume for eye placement results in systems that are not user friendly. Separable cubic phase plates at the lens pupil have been shown to ameliorate this disadvantage by increasing the depth of field. However, these phase masks have limitations on how efficiently they can capture the information-bearing spatial frequencies in iris images. The performance gains in information acquisition that can be achieved by more general, nonseparable phase masks is demonstrated. A detailed design method is presented, and simulations using representative designs allow for performance comparisons.

© 2008 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(100.5010) Image processing : Pattern recognition
(110.4850) Imaging systems : Optical transfer functions
(170.0110) Medical optics and biotechnology : Imaging systems

ToC Category:
Image Processing

Original Manuscript: March 26, 2008
Revised Manuscript: June 22, 2008
Manuscript Accepted: July 30, 2008
Published: September 4, 2008

Virtual Issues
Vol. 3, Iss. 11 Virtual Journal for Biomedical Optics

D. Shane Barwick, "Increasing the information acquisition volume in iris recognition systems," Appl. Opt. 47, 4684-4691 (2008)

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