Easy-setup eye movement recording system for human-computer interaction

TL;DR

This paper presents a user-friendly eye movement recording system for HCI that allows free head movement, does not require wearable devices, and achieves high sampling rate and accuracy using a DSP camera.

Contribution

The system offers a simple, setup-free solution for eye tracking that does not restrict user movement or require headgear, using a DSP camera for detection.

Findings

Sampling rate of 300 Hz achieved

Eye movement accuracy around 1.8 degrees/sec

No wearable devices needed for users

Abstract

Tracking the movement of human eyes is expected to yield natural and convenient applications based on human-computer interaction (HCI). To implement an effective eye-tracking system, eye movements must be recorded without placing any restriction on the user's behavior or user discomfort. This paper describes an eye movement recording system that offers free-head, simple configuration. It does not require the user to wear anything on her head, and she can move her head freely. Instead of using a computer, the system uses a visual digital signal processor (DSP) camera to detect the position of eye corner, the center of pupil and then calculate the eye movement. Evaluation tests show that the sampling rate of the system can be 300 Hz and the accuracy is about 1.8 degree/s.