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The Right View from the Wrong Location: Depth Perception in Stereoscopic Multi-User Virtual Environments
April 2012 (vol. 18 no. 4)
pp. 581-588
ASCII Text
x 
 
B. Pollock, M. Burton, J. W. Kelly, S. Gilbert, E. Winer, "The Right View from the Wrong Location: Depth Perception in Stereoscopic Multi-User Virtual Environments," IEEE Transactions on Visualization and Computer Graphics, vol. 18, no. 4, pp. 581-588, April, 2012.
 
 
BibTex
x
 
@article{ 10.1109/TVCG.2012.58,
author = {B. Pollock and M. Burton and J. W. Kelly and S. Gilbert and E. Winer},
title = {The Right View from the Wrong Location: Depth Perception in Stereoscopic Multi-User Virtual Environments},
journal ={IEEE Transactions on Visualization and Computer Graphics},
volume = {18},
number = {4},
issn = {1077-2626},
year = {2012},
pages = {581-588},
doi = {http://doi.ieeecomputersociety.org/10.1109/TVCG.2012.58},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - JOUR
JO - IEEE Transactions on Visualization and Computer Graphics
TI - The Right View from the Wrong Location: Depth Perception in Stereoscopic Multi-User Virtual Environments
IS - 4
SN - 1077-2626
SP581
EP588
EPD - 581-588
A1 - B. Pollock,
A1 - M. Burton,
A1 - J. W. Kelly,
A1 - S. Gilbert,
A1 - E. Winer,
PY - 2012
KW - virtual reality
KW - computer displays
KW - stereo image processing
KW - user interfaces
KW - stereoscopic displays
KW - depth perception
KW - stereoscopic multiuser virtual environment
KW - stereoscopic depth cue
KW - immersion
KW - stereoscopic image
KW - head-tracking device
KW - center-of-projection
KW - follower perspective
KW - leader perspective
KW - collaborative spatial judgment
KW - virtual shape
KW - forward displacement
KW - backward displacement
KW - perceived depth compression
KW - perceived depth expansion
KW - ray-intersection model
KW - stereo geometry
KW - distortion reduction strategy
KW - Virtual environments
KW - Predictive models
KW - Stereo image processing
KW - Shape
KW - Collaboration
KW - Educational institutions
KW - and collaborative interaction.
KW - Perception
KW - stereoscopy
VL - 18
JA - IEEE Transactions on Visualization and Computer Graphics
ER -
 
B. Pollock, Comput. Eng. Dept., Iowa State Univ., Ames, IA, USA
M. Burton, Human Comput. Interaction Program & Virtual Reality Applic. Center, Iowa State Univ., Ames, IA, USA
J. W. Kelly, Dept. of Psychol., Iowa State Univ., Ames, IA, USA
S. Gilbert, Human Comput. Interaction Program & Virtual Reality Applic. Center, Iowa State Univ., Ames, IA, USA
E. Winer, Mech. Eng. Dept., Iowa State Univ., Ames, IA, USA
Stereoscopic depth cues improve depth perception and increase immersion within virtual environments (VEs). However, improper display of these cues can distort perceived distances and directions. Consider a multi-user VE, where all users view identical stereoscopic images regardless of physical location. In this scenario, cues are typically customized for one "leader" equipped with a head-tracking device. This user stands at the center of projection (CoP) and all other users ("followers") view the scene from other locations and receive improper depth cues. This paper examines perceived depth distortion when viewing stereoscopic VEs from follower perspectives and the impact of these distortions on collaborative spatial judgments. Pairs of participants made collaborative depth judgments of virtual shapes viewed from the CoP or after displacement forward or backward. Forward and backward displacement caused perceived depth compression and expansion, respectively, with greater compression than expansion. Furthermore, distortion was less than predicted by a ray-intersection model of stereo geometry. Collaboration times were significantly longer when participants stood at different locations compared to the same location, and increased with greater perceived depth discrepancy between the two viewing locations. These findings advance our understanding of spatial distortions in multi-user VEs, and suggest a strategy for reducing distortion.

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Index Terms:
virtual reality,computer displays,stereo image processing,user interfaces,stereoscopic displays,depth perception,stereoscopic multiuser virtual environment,stereoscopic depth cue,immersion,stereoscopic image,head-tracking device,center-of-projection,follower perspective,leader perspective,collaborative spatial judgment,virtual shape,forward displacement,backward displacement,perceived depth compression,perceived depth expansion,ray-intersection model,stereo geometry,distortion reduction strategy,Virtual environments,Predictive models,Stereo image processing,Shape,Collaboration,Educational institutions,and collaborative interaction.,Perception,stereoscopy
Citation:
B. Pollock, M. Burton, J. W. Kelly, S. Gilbert, E. Winer, "The Right View from the Wrong Location: Depth Perception in Stereoscopic Multi-User Virtual Environments," IEEE Transactions on Visualization and Computer Graphics, vol. 18, no. 4, pp. 581-588, April 2012, doi:10.1109/TVCG.2012.58
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