Minification affects verbal- and action-based distance judgments differently in head-mounted displays

Document Type

Conference Proceeding

Publication Date

7-1-2012

Abstract

Numerous studies report that people underestimate egocentric distances in Head-Mounted Display (HMD) virtual environments compared to real environments as measured by direct blind walking. Geometric minification, or rendering graphics with a larger field of view than the display's field of view, has been shown to eliminate this underestimation in a virtual hallway environment [Kuhl et al. 2006, 2009]. This study demonstrates that minification affects blind walking in a sparse classroom and does not influence verbal reports of distance. Since verbal reports of distance have been reported to be compressed in real environments, we speculate that minification in an HMD replicates peoples' real-world blind walking and verbal report distance judgments. We also demonstrate a new method for quantifying any unintentional miscalibration in our experiments. This process involves using the HMD in an augmented reality configuration and having each participant indicate where the targets and horizon appeared after each experiment. More work is necessary to understand how and why minification changes verbal- and walking-based egocentric distance judgments differently.© 2012 ACM.

Publication Title

ACM Transactions on Applied Perception

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