Rapid and accurate iris location algorithm
Shao Yu · Computer Engineering and Applications Journal · 2012
The key step to construct the system of automatic iris recognition is how to locate the iris quickly.To achieve such goal,according to the characteristics of the iris image,an algorithm,which is based on block statistics of average grey,is proposed to determine the centre and radius of the iris inner circle.Using moment invariants on edge regions,the parameters symbols of the iris outer circle can be recognized conveniently and quickly,avoiding the use of accumulated count of any parameters.Algorithms proposed in this paper have been simulated on 50 sets of images from CASIA iris image database and the locating accurate rate is up to 95%.