Perceptual effects of scene context and viewpoint for virtual pedestrian crowds

Ennis, Cathy, Peters, Christopher and O'Sullivan, Carol (2011) Perceptual effects of scene context and viewpoint for virtual pedestrian crowds. ACM Transactions on Applied Perception (TAP), 8 (2). 10:1-10:22. ISSN 1544-3965

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Abstract

In this article, we evaluate the effects of position, orientation, and camera viewpoint on the plausibility of pedestrian formations. In a set of three perceptual studies, we investigated how humans perceive characteristics of virtual crowds in static scenes reconstructed from annotated still images, where the orientations and positions of the individuals have been modified. We found that by applying rules based on the contextual information of the scene, we improved the perceived realism of the crowd formations when compared to random formations. We also examined the effect of camera viewpoint on the plausibility of virtual pedestrian scenes, and we found that an eye-level viewpoint is more effective for disguising random behaviors, while a canonical viewpoint results in these behaviors being perceived as less realistic than an isometric or top-down viewpoint. Results from these studies can help in the creation of virtual crowds, such as computer graphics pedestrian models or architectural scenes, and identify situations when users' perception is less accurate.

Item Type:	Article
Subjects:	Q Science > QA Mathematics > Electronic computers. Computer science T Technology > T Technology (General) > Information Technology > Electronic computers. Computer science
Divisions:	School of Computing > Staff Research and Publications
Depositing User:	Caoimhe Ní Mhaicín
Date Deposited:	07 Oct 2014 16:26
Last Modified:	07 Oct 2014 16:26
URI:	https://norma.ncirl.ie/id/eprint/1613

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