August 2016

Conference Paper

Off-Angle Iris Correction using a Biological Model

By:
Thompson, Joseph W; Santos-Villalobos, Hector J; Karakaya, Mahmut ; Barstow, Del R; Bolme, David S; Boehnen, Christopher B
Publication Date:
August 30, 2016
Conference Name:
Biometrics: Theory, Applications and Systems (BTAS)
Conference Location:
Washington DC, District of Columbia, United States of America
Conference Sponsor:
IEEE, ORNL, and DOE

Abstract

This work implements an eye model to simulate corneal refraction effects. Using this model, ray tracing is performed to calculate transforms to remove refractive effects in off-angle iris images when reprojected to a frontal view. The correction process is used as a preprocessing step for off-angle iris images for input to a commercial matcher. With this method, a match score distribution mean improvement of 11.65% for 30 degree images, 44.94% for 40 degree images, and 146.1% improvement for 50 degree images is observed versus match score distributions with unmodified images.

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