A Method to Detect the Iris Outer and Inner Limbus
Jing Gao · Journal of Jiamusi University · 2011
The iris recognition technology is one of the most convenient and accurate biometric authentication.As an important identity feature,iris has the uniqueness,stability,easy-availability,inviolability and so on.However,the iris outer and inner limbus detection becomes very important for the iris recognition.This paper described a effective method of detecting the iris outer and inner limbus.First,intensity mapping was proposed to detect the parameters of the inner limbus roughly.Second,sobel edge detection was used to obtain an iris inner limbus and Hough transform was used to fit the circle of the iris inner limbus.Third,the one dimensional detection was used to detect the iris outer limbus edge point and the Hough transform was applied to obtain the outer circle of the iris outer limbus.The experimental results show that proposed method is very effective.