Title
CAVE Size Matters: Effects of Screen Distance and Parallax on Distance Estimation in Large Immersive Display Setups.
Abstract
When walking within a CAVE-like system, accommodation distance, parallax, and angular resolution vary according to the distance between the user and the projection walls, which can alter spatial perception. As these systems get bigger, there is a need to assess the main factors influencing spatial perception in order to better design immersive projection systems and virtual reality applications. In this paper, we present two experiments that analyze distance perception when considering the distance toward the projection screens and parallax as main factors. Both experiments were conducted in a large immersive projection system with up to 10-meter interaction space. The first experiment showed that both the screen distance and parallax have a strong asymmetric effect on distance judgments. We observed increased underestimation for positive parallax conditions and slight distance overestimation for negative and zero parallax conditions. The second experiment further analyzed the factors contributing to these effects and confirmed the observed effects of the first experiment with a high-resolution projection setup providing twice the angular resolution and improved accommodative stimuli. In conclusion, our results suggest that space is the most important characteristic for distance perception, optimally requiring about 6-to 7-meter distance around the user, and virtual objects with high demands on accurate spatial perception should be displayed at zero or negative parallax.
Year
DOI
Venue
2016
10.1162/PRES_a_00241
Presence
Field
DocType
Volume
Computer vision,Immersive display,Virtual reality,Computer graphics (images),Parallax,Computer science,Spatial perception,Angular resolution,Artificial intelligence,Immersion (virtual reality),Perception,Accommodation
Journal
25
Issue
ISSN
Citations 
1
1054-7460
2
PageRank 
References 
Authors
0.36
11
4
Name
Order
Citations
PageRank
Gerd Bruder1108288.26
Ferran Argelaguet226132.57
Anne-Hélène Olivier335124.65
Lecuyer, Anatole41510142.42