VR 2017

2017 IEEE Virtual Reality (VR), March 18-22, 2017, Los Angeles, CA, USA

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Walking Alone and Together
Conference Papers
Ballroom B, Chair: Niels Christian Nilsson
An Evaluation of Strategies for Two-User Redirected Walking in Shared Physical Spaces
Mahdi Azmandian, Timofey Grechkin, and Evan Suma Rosenberg
(University of Southern California, USA)
Abstract: As the focus of virtual reality technology is shifting from single-person experiences to multi-user interactions it becomes increasingly important to accommodate multiple co-located users within a shared real-world space. For locomotion and navigation, the introduction of multiple users moving both virtually and physically creates additional challenges related to potential user-on-user collisions. In this work, we focus on defining the extent of these challenges, in order to apply redirected walking to two users immersed in virtual reality experiences within a shared physical tracked space. Using a computer simulation framework, we explore the costs and benefits of splitting available physical space between users versus attempting to algorithmically prevent user-to-user collisions. We also explore fundamental components of collision prevention such as steering the users away from each other, forced stopping, and user re-orientation. Each component was analyzed for the number of potential disruptions to the flow of the virtual experience. We also develop a novel collision prevention algorithm that reduces overall interruptions by 17.6% and collision prevention events by 58.3%. Our results show that sharing space using our collision prevention method is superior to subdividing the tracked space.

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Time stamp: 2019-05-23T13:39:23+02:00