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          Institute: MPI für biologische Kybernetik     Collection: Biologische Kybernetik     Display Documents

ID: 420005.0, MPI für biologische Kybernetik / Biologische Kybernetik
A psychophysically calibrated controller for navigating through large environments in a limited free-walking space
Authors:Engel, D.; Curio, C.; Tcheang, L.; Mohler, B.; Bülthoff, H.H.
Editors:Feiner, S.; Thalmann, D.; Guitton, P.; Fröhlich, B.; Kruijff, E.; Hachet, M.
Date of Publication (YYYY-MM-DD):2008-10
Title of Proceedings:Proceedings of the 2008 ACM Symposium on Virtual Reality Software and Technology (VRST 2008)
Start Page:157
End Page:164
Physical Description:8
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Experience indicates that the sense of presence in a virtual environment is enhanced when the participants are able to actively move through it. When exploring a virtual world by walking, the size of the model is usually limited by the size of the available tracking space. A promising way to overcome these limitations are motion compression techniques, which decouple the position in the real and virtual world by introducing imperceptible visual-proprioceptive conflicts. Such techniques usually precalculate the redirection factors, greatly reducing their robustness. We propose a novel way to determine the instantaneous rotational gains using a controller based on an optimization problem. We present a psychophysical study that measures the sensitivity of visual-proprioceptive conflicts during walking and use this to calibrate a real-time controller. We show the validity of our approach by allowing users to walk through virtual environments vastly larger than the tracking space.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:Holger Fischer
Affiliations:MPI f�r biologische Kybernetik/Psychophysics (Dept. B�lthoff)
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