An iris location algorithm based on contour-tracking
Fei Yao-ping · Information technology newsletter · 2005
To solve the problems of a large amount of invalid samplings and useless accumulations in the randomized Hough transform,an iris location algorithm based on contour-tracking is presented.At first,the paper gives a point on pupil contour by finding a point in the pupil,and then contour-tracking is doing in certain neighborhood based on the direction of the point with the template of Sobel operators.Such an iris location algorithm has integrated contour information,and the discontinuous contour is not existed.The tracking is in certain area,so the speed of location is relative fast.At the same time,the algorithm improves the choice of the point on the contour,so it's not necessary to take the affection of facula into account,which is brought by illumination.