Absolute Pupil and Iris Segmentation Using Reverse Function

In order to provide competent and successful iris recognition, iris localization plays a major role. In this proposed method, pupil localization is done by using scaling, reverse function and four neighbours method so that irrespective of pupil‟s contour, either circle or ellipse, the pupil‟s boundary is detected accurately. For iris outer boundary detection, contrast enhancement, special wedges and thresholding techniques are used to isolate the specific iris regions without eyelid and eyelash occlusions. Upon completing the above phases, experimental result shows that, pupil and iris boundaries are detected 100% perfectly.