A Comprehensive Head-mounted Eye Tracking Review: Software solutions, applications, and challenges

Head-mounted eye-tracking (E-T) technology allows for monitoring and recording people’s eye movements in a completely unobtrusive fashion. It has been effectively used to accelerate human behavior research in a wide variety of areas. Motivated by the growing importance/applications of head-mounted eye tracking technology, this work provides a comprehensive review for researchers who are trying to find the most effective strategies for their research and applications. The goal of the paper is to provide the reader with a survey of state-of-art head-mounted eye tracking technology, present commercially available wearable eye tracking equipment, software solutions for eye tracking data analysis techniques reported in the literature, and large-scale eye tracking data visualization methods for researchers from varying backgrounds. Example applications adopting head-mounted eye tracking are described, such as human-machine interaction, cognitive psychology, medical applications, and augmented reality. Finally, discussion of limitations and expectations for head-mounted eye tracking analysis methodology is also investigated.