Paper published in the Proceedings of the 2014 Symposium on Eye Tracking Research & Applications (ETRA 2014)
Location: Safety Harbor, FL, USA
Date: Mar, 2014
DOI Bookmark: 10.1145/2578153.2578163
Morten Lidegaard, University of Southern Denmark
Dan Witzner Hansen, IT University of Copenhagen
Norbert Krüger, University of Southern Denmark
This paper presents a fully calibrated extended geometric approach for gaze estimation in three dimensions (3D). The methodology is based on a geometric approach utilising a fully calibrated binocular setup constructed as a head-mounted system. The approach is based on utilisation of two ordinary web-cameras for each eye and 6D magnetic sensors allowing free head movements in 3D. Evaluation of initial experiments indicate comparable results to current state-of-the-art on estimating gaze in 3D. Initial results show an RMS error of 39-50 mm in the depth dimension and even smaller in the horizontal and vertical dimensions regarding fixations. However, even though the workspace is limited, the fact that the system is designed as a head-mounted device, the workspace volume is relatively positioned to the pose of the device. Hence gaze can be estimated in 3D with relatively free head-movements with external reference to a world coordinate system and is therefore offering flexibility and movability within certain constraints.