An Experimental Comparision of Perceived Egocentric Distance in Real, Image-Based, and Traditional Virtual Environments using Direct Walking Tasks
Author(s): Peter Willemsen, Amy A. Gooch.
Technical Report: School of Computing, University of Utah, No. UUCS-02-009, February,
2002.
[BibTeX]
Abstract:
In virtual environments, perceived egocentric distances are consistently underestimated
when compared to the same distance judgments in the real world. The research presented
in this paper explores two possible causes for this reduced distance perception in virtual
environments: (1) real-time computer graphics rendering, and (2) immersive display technology. Our experiment compared egocentric distance judgments in three complex, indoor
environments: a real hallway with full-cue conditions; a virtual, stereoscopic, photographic
panorama; and a virtual, stereoscopic computer model. Perceived egocentric distance was
determined by a directed walking task in which subjects walk blindfolded to the target. Our
results show there is a significant difference in distance judgments between real and virtual environments. However, the differences between distance judgments in virtual photographic panorama environments and traditionally rendered virtual environments are small, suggesting that the display device is affecting distance judgments in virtual environments.
Evaluating Space Perception in NPR Immersive Environments
Amy A. Gooch, Peter Willemsen.
2nd International Symposium on Non-Photorealistic Animation and Rendering (NPAR'02), pp. 105--110, Annecy, France, June 3-5,
2002. [BibTeX]
Resolution Independent NPR-Style 3D Line Textures
Kristin Potter, Amy A. Gooch, Bruce Gooch, Peter Willemsen, Joe Kniss, Richard Riesenfeld, Peter Shirley.
Computer Graphics Forum, Vol. 28, No. 1, pp. 56--66,
2009. [BibTeX]