Onkhar, Vishal; Dodou, Dimitra; de Winter, Joost (2023): Supplementary data for the paper 'Evaluating the Tobii Pro Glasses 2 and 3 in static and dynamic conditions'. Version 1. 4TU.ResearchData. dataset. https://doi.org/10.4121/442018c6-30eb-4439-a452-c0046726905c.v1

Dataset

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• Cognitive Sciences
• Other Technology
• Psychology and Cognitive Sciences
• Technology

computer vision, dynamic tasks, eye-tracker accuracy, eye-tracking

CC BY 4.0

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by Vishal Onkhar , Dimitra Dodou , Joost de Winter

Over the past decades, there have been significant developments in eye-tracking technology, particularly in the domain of mobile, head-mounted devices. Nevertheless, questions remain regarding the accuracy of these eye-trackers during static and dynamic tasks. In light of this, we evaluated the performance of two widely-used devices: Tobii Pro Glasses 2 and Tobii Pro Glasses 3. A total of 36 participants engaged in tasks under three dynamicity conditions. In the “seated with a chinrest” trial, only the eyes could be moved, in the “seated without a chinrest” trial, both the head and the eyes were free to move, and during the walking trial, participants walked along a straight path. During the seated trials, participants’ gaze was directed towards dots on a wall by means of audio instructions, whereas in the walking trial, participants maintained their gaze on a bullseye while walking towards it. Eye-tracker accuracy was determined using computer vision techniques to identify the target within the scene camera image. The findings showed that Tobii 3 outperformed Tobii 2 in terms of accuracy during the walking trials. Moreover, the results suggest that employing a chinrest in the case of head-mounted eye-trackers is counterproductive, as it necessitates larger eye eccentricities for target fixation, thereby compromising accuracy compared to not using a chinrest, which allows for head movement. Lastly, it was found that participants who reported higher workload demonstrated poorer eye-tracking accuracy. The current findings may be useful in the design of experiments that involve head-mounted eye-trackers.

• 2023-07-10 first online, published, posted

4TU.ResearchData

MATLAB/.m, .mat; Excel/.xlsx; Text/.txt; Video/.mp4

Behavior Research Methods

Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology