Research of iris location algorithms based on the wavelet
Xinhao Ji · Journal of Zhejiang University of Technology · 2005
Iris location is the key subject of iris recognition. Based on the research of Integro-differential Operator and Hough location algorithm, the inner boundary of iris is located by the least square method and wavelet, while a improved Integro-differential Operator is used to locate the outer boundaries of iris. It makes good use of excellency of wavelet analysis and least square method to locate the inner boundary of iris. The method changes characters of the former location algorithm to get the result directly in the edge. However, the outer boundary of iris is located by the improved Integro-differential and it decreases the range of search. The result shows that the speed of location is quicker than Hough algorithm. The speed of location is improved in least square method based on wavelet and the algorithm is simplified. The range of search is decreased and it gets faster speed in the outer location.