Comparing Perceptual Thresholds of Size Perception under Different Distances in Augmented Reality

Gaining a comprehensive understanding and quantifying human perception are indispensable as they enable us to design more effective interaction and visualization techniques for augmented reality (AR). However, there is a lack of straightforward comparisons of size perception accuracy between different distances in augmented reality. In this paper, we conducted a series of psychophysical experiments to measure perceptual thresholds of size discrimination for virtual objects. Our results indicated that there was no main effect of viewing different distances between 1 meter to 3 meters. Our findings indicate that AR could effectively support training and simulation applications utilizing distances within the range tested in our study. As a result, HoloLens 2 seems to be a competent augmented reality headset for visual perception experiments with reduced bias from vergence-accommodation conflicts in future research.