In eye candidate detection,
eye candidates are searched by employing a mask with 2x3 sub-blocks on a near infrared eye image to
compute the intensity difference between the iris region and the surrounding regions.
In eye validation,
an eye is verified by searching a pupil region in the eye candidates by employing a mask with 3x3 sub-blocks to compute the intensity difference between the pupil region and its surrounding regions.
The experiment result shows that the eye detection rate is higher when a 2x3 mask is employed than when a 3x3 mask is employed in the eye candidate detection for eyeglass wearers.