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A master's thesis from Aalborg University
Book cover


Effect of Environment Size on Spatial Perception in Virtual Reality

Authors

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Term

4. term

Education

Publication year

2022

Pages

8

Abstract

People often judge distances in virtual reality (VR) as shorter than they really are, but the reason remains unclear. This thesis examines whether the size of the virtual environment (VE) influences egocentric distance perception, meaning how far things seem from oneself. We compared three ways to measure perceived distance: verbal estimates, blind walking (walking to a target distance without vision), and a new method called walk and assess. Blind walking was the most accurate. We created a virtual replica of a real location as a bridge between the real world and VR, and built three virtual rooms: a small (15 m2), a medium (35 m2), and a large (95 m2). First, using blind walking, we measured differences between the real world and its virtual counterpart across distances from 1 to 10 meters. Then we tested how room size affects distance perception in VR using the three rooms. The findings showed consistent underestimation of distances, with underestimation increasing as true distance increased and also increasing with larger virtual rooms. These patterns suggest that virtual environment size can contribute to distance underestimation in VR.

Mennesker vurderer ofte afstande i virtual reality (VR) som kortere, end de er, men årsagen er stadig uklar. Denne afhandling undersøger, om størrelsen på det virtuelle miljø (VE) påvirker egocentrisk afstandsopfattelse, altså hvor langt noget føles fra én selv. Vi sammenlignede tre metoder til at måle oplevet afstand: verbale vurderinger, blindgang (at gå til en målafstand uden syn) og en ny metode kaldet walk and assess. Blindgang var den mest præcise. Vi byggede en virtuel kopi af et virkeligt sted som overgang mellem den fysiske verden og VR og skabte tre virtuelle rum: et lille (15 m2), et mellemstort (35 m2) og et stort (95 m2). Først målte vi forskellene mellem den virkelige verden og den virtuelle kopi med blindgang ved afstande fra 1 til 10 meter. Derefter undersøgte vi, hvordan rummets størrelse påvirker afstandsopfattelsen i VR ved hjælp af de tre rumstørrelser. Resultaterne viste, at deltagere konsekvent undervurderede afstande, at undervurderingen voksede med den faktiske afstand, og at undervurderingen også blev større i større virtuelle rum. Det peger på, at størrelsen af det virtuelle miljø kan bidrage til afstandsundervurderinger i VR.

[This apstract has been rewritten with the help of AI based on the project's original abstract]