# Poster: Generic Redirected Walking & Dynamic Passive Haptics: Evaluation and Implications for Virtual Locomotion Interfaces

Proceedings of the IEEE Symposium on 3D User Interfaces (3DUI) (Poster Presentation), page 147--148 - 2008
In this paper we introduce a virtual locomotion system that allows navigation within any large-scale virtual environment (VE) by real walking. Based on the results of a user study we have quantified how much users can unknowingly be redirected in order to guide them through an arbitrarily sized VE in which virtual paths differ from the paths tracked in the real working space. Furthermore we introduce the new concept of dynamic passive haptics. This concept allows to map any number of virtual objects to real \emph{proxy objects} having similar haptic properties, i.e., size, shape and surface structure, such that the user can sense these virtual objects by touching their real world counterparts. This mapping may be changed dynamically during runtime and need not be one-to-one. Thus dynamic passive haptics provides the user with the illusion of interacting with a desired virtual object by redirecting her/him to the corresponding proxy object. Since the mapping between virtual and proxy objects can be changed dynamically, a small number of proxy objects suffices to represent a much larger number of virtual objects.
We describe the concepts in detail and discuss their parameterization which has been derived from the initially conducted user study. Furthermore we explain technical details regarding the integration into legacy 3D graphics applications, which is based on an interceptor library allowing to trace and modify 3D graphics calls. Thus when the user is tracked s/he is able to explore any 3D scene by natural walking, which we demonstrate by 3D graphics applications from different domains.

## BibTex references

@InProceedings\{SBRHFL08,
author       = "Steinicke, Frank and Bruder, Gerd and Ropinski, Timo and Hinrichs, Klaus H. and Frenz, Harald and Lappe, Markus",
title        = "Poster: Generic Redirected Walking \& Dynamic Passive Haptics: Evaluation and Implications for Virtual Locomotion Interfaces",
booktitle    = "Proceedings of the IEEE Symposium on 3D User Interfaces (3DUI) (Poster Presentation)",
pages        = "147--148",
year         = "2008",
publisher    = "IEEE Press",
url          = "http://basilic.informatik.uni-hamburg.de/Publications/2008/SBRHFL08"
}