Improved Iris Localization Algorithm
Zhang Yu · Dianzi Ke-ji Daxue xuebao · 2007
In order to improve the accuracy of locating iris exterior edge and the speed of iris localization,we proposed an improved algorithm based on histogram equalization and coarse-to-fine localization.First,we detect a coarse center of a pupil through the projection of image intensity in a binary image.Then,a fine center of the pupil is found out by using a Roberts mask.Finally,the location of iris' outer edge can be finished in the similar way. Through our experiments,the algorithm of this paper is proved to be valid and efficient.Furthermore,this algorithm is not sensitive to the quality of iris image.