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Mitigating Cybersickness in Virtual Reality Systems through Foveated Depth-of-Field Blur

Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genoa, 16126 Genoa, Italy
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Author to whom correspondence should be addressed.
Current address: Via Dodecaneso 35, 16146 Genoa, Italy.
Academic Editor: Denis Laurendeau
Sensors 2021, 21(12), 4006; https://doi.org/10.3390/s21124006
Received: 6 April 2021 / Revised: 28 May 2021 / Accepted: 8 June 2021 / Published: 10 June 2021
(This article belongs to the Section Wearables)
Cybersickness is one of the major roadblocks in the widespread adoption of mixed reality devices. Prolonged exposure to these devices, especially virtual reality devices, can cause users to feel discomfort and nausea, spoiling the immersive experience. Incorporating spatial blur in stereoscopic 3D stimuli has shown to reduce cybersickness. In this paper, we develop a technique to incorporate spatial blur in VR systems inspired by the human physiological system. The technique makes use of concepts from foveated imaging and depth-of-field. The developed technique can be applied to any eye tracker equipped VR system as a post-processing step to provide an artifact-free scene. We verify the usefulness of the proposed system by conducting a user study on cybersickness evaluation. We used a custom-built rollercoaster VR environment developed in Unity and an HTC Vive Pro Eye headset to interact with the user. A Simulator Sickness Questionnaire was used to measure the induced sickness while gaze and heart rate data were recorded for quantitative analysis. The experimental analysis highlighted the aptness of our foveated depth-of-field effect in reducing cybersickness in virtual environments by reducing the sickness scores by approximately 66%. View Full-Text
Keywords: cycbersickness; spatial blur; depth-of-field; foveation; gaze-contingent; eye-tracker; shader cycbersickness; spatial blur; depth-of-field; foveation; gaze-contingent; eye-tracker; shader
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MDPI and ACS Style

Hussain, R.; Chessa, M.; Solari, F. Mitigating Cybersickness in Virtual Reality Systems through Foveated Depth-of-Field Blur. Sensors 2021, 21, 4006. https://doi.org/10.3390/s21124006

AMA Style

Hussain R, Chessa M, Solari F. Mitigating Cybersickness in Virtual Reality Systems through Foveated Depth-of-Field Blur. Sensors. 2021; 21(12):4006. https://doi.org/10.3390/s21124006

Chicago/Turabian Style

Hussain, Razeen; Chessa, Manuela; Solari, Fabio. 2021. "Mitigating Cybersickness in Virtual Reality Systems through Foveated Depth-of-Field Blur" Sensors 21, no. 12: 4006. https://doi.org/10.3390/s21124006

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