This paper presents a novel adaptive algorithm to

detect the center of pupil in frontal view faces. This algorithm, at

first, employs the viola-Jones face detector to find the approximate

location of face in an image. The knowledge of the face structure

is exploited to detect the eye region. The histogram of the detected

region is calculated and its CDF is employed to extract the eyelids

and iris region in an adaptive way. The center of this region is

considered as the pupil center. The experimental results show

ninety one percent’s accuracy in detecting pupil center.