Measuring the sense of reality produced by highly realistic surround display systems: Application of an ARX model to observers' body-sway data

We propose a quantitative method of evaluating observers' perceptions, that is, “feeling of immersion,” when a visual stimulus is displayed on a surround display. The proposed method uses the movement of an observer's center of gravity induced by a visual stimulus as an index. To analyze the quantitative relationship between body sway and visual stimuli, an ARX model was fitted to data obtained by measuring observers' body sway when a visual stimulus was displayed on surround displays. The results showed that adding horizontal screens increased the observers' body sway, whereas vertical screens did not when the visual stimulus moved in a rolling fashion. © 2003 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 87(2): 46–58, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.10150