Geometry Aware Passthrough Mitigates Cybersickness

TL;DR

This paper introduces a geometry aware passthrough system for VR headsets that significantly reduces cybersickness by improving depth perception, supported by a new benchmarking method and user study.

Contribution

It presents a novel geometry aware passthrough approach and a protocol for measuring cybersickness, demonstrating its effectiveness over direct passthrough in user experiments.

Findings

Significantly reduced nausea and disorientation with geometry aware passthrough

First study to quantitatively compare passthrough methods for cybersickness

Potential for further mitigation strategies identified

Abstract

Virtual Reality headsets isolate users from the real-world by restricting their perception to the virtual-world. Video See-Through (VST) headsets address this by utilizing world-facing cameras to create Augmented Reality experiences. However, directly displaying camera feeds causes visual discomfort and cybersickness due to the inaccurate perception of scale and exaggerated motion parallax. This paper demonstrates the potential of geometry aware passthrough systems in mitigating cybersickness through accurate depth perception. We first present a methodology to benchmark and compare passthrough algorithms. Furthermore, we design a protocol to quantitatively measure cybersickness experienced by users in VST headsets. Using this protocol, we conduct a user study to compare direct passthrough and geometry aware passthrough systems. To the best of our knowledge, our study is the first one to reveal significantly reduced nausea, disorientation, and total scores of cybersickness with geometry aware passthrough. It also uncovers several potential avenues to further mitigate visually-induced discomfort.