User Behavior and the Importance of Stereo for Depth Perception in Fish Tank Virtual Reality

摘要

Since one of the most important aspects of a Fish Tank Virtual Reality (FTVR) systemis how well it provides the illusion of depth to users,we present a study that evaluatesusers’ depth perception in FTVR systems using three tasks. The tasks are based onpsychological research on human vision and depth judgments common in VR applications.We find that participants do not perform well under motion parallax cues only,when compared with stereo only or a combination of both kinds of cues. Measurementsof participants’ head movement during each task prove valuable in explainingthe experimental findings.We conclude that FTVR users rely on stereopsis for depthperception in FTVR environments more than they do on motion parallax, especiallyfor tasks requiring depth acuity.