EyeRecToo: Open-source software for real-Time pervasive head-mounted eye tracking

Head-mounted eye tracking offers remarkable opportunities for research and applications regarding pervasive health monitoring, mental state inference, and human computer interaction in dynamic scenarios. Although a plethora of software for the acquisition of eye-Tracking data exists, they often exhibit critical issues when pervasive eye tracking is considered, e.g., closed source, costly eye tracker hardware dependencies, and requiring a human supervisor for calibration. In this paper, we introduce EyeRecToo, an open-source software for real-Time pervasive head-mounted eye-Tracking. Out of the box, EyeRecToo offers multiple real-Time state-ofthe-art pupil detection and gaze estimation methods, which can be easily replaced by user implemented algorithms if desired. A novel calibration method that allows users to calibrate the system without the assistance of a human supervisor is also integrated. Moreover, this software supports multiple head-mounted eye-Tracking hardware, records eye and scene videos, and stores pupil and gaze information, which are also available as a real-Time stream. Thus, EyeRecToo serves as a framework to quickly enable pervasive eye-Tracking researchand applications. Available at: www.ti.uni-Tuebingen.de/perception.