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A Novel Ray Analogy for Enrolment of Ear Biometrics Alastair H. Cummings, Mark S. Nixon, John N. Carter
 

Summary: A Novel Ray Analogy for Enrolment of Ear Biometrics
Alastair H. Cummings, Mark S. Nixon, John N. Carter
Abstract-- The ear is a maturing biometric with qualities
that give it superiority over other biometrics in a number of
situations; in particular the ear is relatively immune to variation
due to ageing. Successful ear biometrics rely upon a well
enrolled dataset, with ears normalised for position, scale and
rotation. We present a novel ear enrolment technique using the
image ray transform, based upon an analogy to light rays. The
transform is capable of highlighting tubular structures such as
the helix of the ear and spectacle frames and, by exploiting the
elliptical shape of the helix, can be used as the basis of a method
for enrolment for ear biometrics. The presented technique
achieves 99.6% success at enrolment across 252 images of
the XM2VTS database, displaying a resistance to confusion
with hair and spectacles. These results show great potential
for enhancing many other already existing enrolment methods
through use of the image ray transform at a preprocessing
stage.
I. INTRODUCTION

  

Source: Anderson, Jim - School of Mathematics, University of Southampton

 

Collections: Mathematics