Print Email Facebook Twitter Evaluating the Tobii Pro Glasses 2 and 3 in static and dynamic conditions Title Evaluating the Tobii Pro Glasses 2 and 3 in static and dynamic conditions Author Onkhar, V. (TU Delft Human-Robot Interaction) Dodou, D. (TU Delft Medical Instruments & Bio-Inspired Technology) de Winter, J.C.F. (TU Delft Human-Robot Interaction) Date 2023 Abstract Over the past few 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. Subject Eye-trackingDynamic tasksEye-tracker accuracyComputer vision To reference this document use: http://resolver.tudelft.nl/uuid:c32ee16e-4647-48b0-96b4-8f4c1ba7a299 DOI https://doi.org/10.3758/s13428-023-02173-7 ISSN 1554-351X Source Behavior Research Methods (Print) Part of collection Institutional Repository Document type journal article Rights © 2023 V. Onkhar, D. Dodou, J.C.F. de Winter Files PDF s13428_023_02173_7.pdf 6.37 MB Close viewer /islandora/object/uuid:c32ee16e-4647-48b0-96b4-8f4c1ba7a299/datastream/OBJ/view