8-6 Pupil Detection Using Interpupillary Distance as a Constraint to Solve the Glasses Reflection Problem in Gaze Detection : Improvement by Updating the Distance Using Its Histogram

Abstract

In the pupil-corneal reflection-based gaze detection, the glasses reflection of the near-infrared light source tends to be misdetected as the pupil. In our previous study, we proposed the pupil searching and tracking methods using a constant interpupillary distance as the constraint. However, there were some cases that the pupils are not detected because the distance actually changes. To improve this, in the present study, the method to renew the distance using its histogram is proposed.