The effect of clicking by smiling on the accuracy of head-mounted gaze tracking

Authors:
Ville Rantanen;Jarmo Verho;Jukka Lekkala;Outi Tuisku;Veikko Surakka;Toni Vanhala
Affiliations:
Tampere University of Technology, Finland;Tampere University of Technology, Finland;Tampere University of Technology, Finland;University of Tampere, Tampere, Finland;University of Tampere, Tampere, Finland;VTT Technical Research Centre of Finland, Tampere, Finland
Venue:
Proceedings of the Symposium on Eye Tracking Research and Applications
Year:
2012

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Abstract

The effect of facial behaviour on gaze tracking accuracy was studied while using a prototype system that integrated head-mounted, video-based gaze tracking and a capacitive facial movement detection for respective pointing and selecting objects in a simple graphical user interface. Experiments were carried out to determine how voluntary smiling movements that were used to indicate clicks affect the accuracy of gaze tracking due to the combination of user eye movement behaviour and the operation of gaze tracking algorithms. The results showed no observable degradation of the gaze tracking accuracy when using voluntary smiling for object selections.