A new algorithm for location of iris inner boundary based on region marking
Guoliang Zhao · Journal of Naval University of Engineering · 2005
The location of iris inner boundary is a key problem in the iris recognition. This article puts forward a new and simple algorithm for the location of the iris inner edge (i.e. pupil). Firstly, the Sobel operator and morphology transform are used to detect the edge of the iris image. Then, all connected regions in the detected edges are given the relevant gray-scale. Furthermore, the pupil area can be separated by the method of gray-scale histogram. At last, the pupil is located by the projection method. The results of experimentation prove that the proposed algorithm can be used to locate the inner boundary of iris exactly.