EyeInfo Research Group

Paper published in the Proceedings of the 2014 Symposium on Eye Tracking Research & Applications (ETRA 2014)
Location: Safety Harbor, FL, USA
Date: Mar, 2014
Publisher: ACM
ISBN/ISSN: 978-1-4503-2751-0
Pages: 83-86
DOI Bookmark: 10.1145/2578153.2578163

Authors:
Morten Lidegaard, University of Southern Denmark
Dan Witzner Hansen, IT University of Copenhagen
Norbert Krüger, University of Southern Denmark

Abstract:
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.

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