Performance Comparison of Different Low Cost Cameras for Development of an Eye-Tracking System

摘要

Eye tracking is very useful to monitor and assess the behaviors, needs, emotional states, and desires of human beings, such as monitoring the drowsiness of a driver, or providing rehabilitation support to stroke and locked-in patients. The commercial eye trackers, developed 20 years ago, have failed to become popular for several reasons. As a result, development of low-cost eye-tracking systems using easily available and affordable cameras has become a major domain of research. The camera's performance plays a vital role in efficient eye tracking in spite of different illuminations, users, and backgrounds. The present research evaluates the performance of six popular, low-cost, easily available cameras for development of an efficient eye-tracking system to be used for rehabilitation purposes of stroke and other locked-in patients. Different illuminations at day and night, different aged users, and users with and without spectacles have been considered during the evaluation.