A fast adaboosting based method for iris and pupil contour detection

Authors:
Francisco Silva Mata;Eduardo Garea Llano;Estela María Álvarez Morales;José Luís Gil Rodríguez
Affiliations:
Advanced Technology Application Center, Siboney Playa, Cuba;Advanced Technology Application Center, Siboney Playa, Cuba;Advanced Technology Application Center, Siboney Playa, Cuba;Advanced Technology Application Center, Siboney Playa, Cuba
Venue:
CIARP'06 Proceedings of the 11th Iberoamerican conference on Progress in Pattern Recognition, Image Analysis and Applications
Year:
2006

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Abstract

The iris localization plays a fundamental role in the recognition process because the speed and performance of the iris recognition system largely depends on the quality of the pupil and iris detection. This process includes the detection of inner (pupil) and outer (iris) boundaries. In this paper we present a new method for iris and pupil boundaries detection based on Adaboosting technique for localization of circular objects and an algorithm based on the elements of analytic geometry, in particular, the determination of the bounded circumference of a tangential square that encloses the pupil and iris. The proposed approach overcomes the limitations that had previous methods regarding the use of images obtained under not controlled conditions like specular light reflected in the pupil or in the iris. We experimented our approach comparing the results in detection with the results obtained by Daugman algorithm using images from two contrasting databases, CASIA and UBIRIS.