Eye tracking performance improvement

In this paper, solutions to improve the stability and time response for head mounted eye tracking system are presented. The detection of eye pupil centre coordinates is affected by noise due to physiologic eye tremor, noisy images and the algorithm used for pupil detection. That leads to unstable point of gaze detection, affecting the eye tracking precision. Treating pupil centre coordinates as two separate signals, filters can be applied to improve the pupil detection stability. The point fixation can be more accurate detected by adding a snap to point technique fixation.