一种新的虹膜定位算法

Journal of Shanghai University（Natural Science Edition）

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A New Algorithm for Locating Iris

CHEN Ying1,2,LU Heng-li1

1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China;2. Computer Science and Information Engineering Department, Shanghai Institute of Technology, Shanghai 200233, China

Received:2006-05-31 Revised:1900-01-01 Online:2007-04-30 Published:2007-04-30
Contact: CHEN Ying

Abstract

Abstract: A new method for locating iris is proposed. The iris image is first segmented with a threshold. A morphological method for binary images is used to extract the center of pupil and estimate its radius. An edge detector is used to extract the exterior edges of iris. The interior and exterior radii are detected accurately by using a circular template in a reduced candidate area. Experimental results show that the method can speed the iris locating process and reduce blindness existing in previous search algorithms.

Key words: circular template, edge detector, iris location

CLC Number:

TP 391.4

CHEN Ying;LU Heng-li. A New Algorithm for Locating Iris[J]. Journal of Shanghai University（Natural Science Edition）.

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