ATTENTION: This is a web archive! The IMS Group was split up in 2018 and does not exist anymore. Recent work of former members can be found at the VR/AR Group and the Computer Vision Group.

Interactive Media Systems, TU Wien

Mutual Collision Avoidance During Walking in Real and Collaborative Virtual Environments

By Iana Podkosova and Hannes Kaufmann


In walkable multi-user HMD-based VR immersed users have to avoid colliding with each other while performing tasks or exploring the virtual environment. This paper presents an experiment in which we compare mutual collision avoidance behaviour of pairs of users walking in the matched real and virtual environments. To generalize our study, we investigate two types of multi-user VR setup: one in which both users share a common tracking space (colocated condition) and one where they move in two separate tracking spaces while sharing a common virtual space (distributed condition). Our results indicated signifcant differences in locomotor trajectories of participants between the real and virtual conditions. Precisely, we observed an increase in the clearance distance and the median path curvature and a decrease in the walking speed when participants performed the test in VR in the colocated condition. Moreover, we found effects of pre-conditioning between the colocated and distributed scenarios.


I. Podkosova, H. Kaufmann: "Mutual Collision Avoidance During Walking in Real and Collaborative Virtual Environments"; Talk: i3D'18, Montreal; 05-15-2018 - 05-18-2018; in: "Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games", (2018), ISBN: 978-1-4503-5705-0; 1 - 9.


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