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

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationProceedings ETRA 2012, Eye Tracking Research and Applications Symposium, Santa Barbara, CA, USA, March 28-30, 2012
EditorsStephen N. Spencer
Place of PublicationNew York
PublisherThe Association for Computing Machinery ACM
ISBN (Print)978-1-4503-1225-7
Publication statusPublished - 2012
Publication typeA4 Article in a conference publication

Publication series

NameACM Symposium on Eye Tracking Research & Applications


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.

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Field of science, Statistics Finland

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