Virtual reality system effects on size-distance judgements in a virtual environment

The paper provides an assessment of how selected properties of a virtual reality system impact size-distance judgments in a virtual environment. Manipulations are made in viewing conditions (biocular vs. stereoscopic), image resolution, field of view, scene contrast and target distance, while subjects attempt to match the attributes of a comparison object with a standard object. General findings suggest that under more natural viewing conditions, size-distance judgements in virtual environments differ from those found previously in physical environments whereas, under impoverished conditions, performance differences between the two environments are similar.