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VRpursuits: interaction in virtual reality using smooth pursuit eye movements

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PubDate: May 2018

Teams: LMU Munich,Max Planck Institute for Informatics

Writers: Mohamed Khamis;Carl Oechsner;Florian Alt;Andreas Bulling

PDF: VRpursuits: interaction in virtual reality using smooth pursuit eye movements

Abstract

Gaze-based interaction using smooth pursuit eye movements (Pursuits) is attractive given that it is intuitive and overcomes the Midas touch problem. At the same time, eye tracking is becoming increasingly popular for VR applications. While Pursuits was shown to be effective in several interaction contexts, it was never explored in-depth for VR before. In a user study (N=26), we investigated how parameters that are specific to VR settings influence the performance of Pursuits. For example, we found that Pursuits is robust against different sizes of virtual 3D targets. However performance improves when the trajectory size (e.g., radius) is larger, particularly if the user is walking while interacting. While walking, selecting moving targets via Pursuits is generally feasible albeit less accurate than when stationary. Finally, we discuss the implications of these findings and the potential of smooth pursuits for interaction in VR by demonstrating two sample use cases: 1) gaze-based authentication in VR, and 2) a space meteors shooting game.

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