A Simple Geometric Approach for Ear Recognition

With the increase in need for strong security systems, the biometric systems are becoming more and more popular. These systems are based on human traits which, unlike passwords or pins, cannot be lost, stolen or forgotten. One such trait is ear. With the initial doubts on uniqueness of ear, ear biometrics could not attract much attention. But after it has been said that it is almost impossible to find two ears with all the parts identical, ear biometrics has gained its pace. In this paper a simple scale and rotation invariant two-stage geometric approach which is based on the concept of max-line, the longest line that has both its end-points on the edges of the ear, is proposed.