Evaluation of Display Parameters Affecting User Performance of an Interactive Task in a Virtual Environment
McWhorter, Shane William
Hodges, Larry F.
Rodriguez, Walter E.
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Although the popularity of virtual environments is widely known, little is known about the usability of virtual environment displays. This paper presents experimental data on the effect of virtual environment display parameters on task performance. In this investigation, subjects performed an object recognition and 3-dimensional manipulation task in a virtual environment given real-time visual feedback by dynamic display techniques. The subjects controlled a "virtual crane" by the movements of a SpaceBallTM input device. The interaction of stereoscopic depth cues with viewpoint position is evaluated in this experiment. Six conditions were tested by the combination of one of two values of stereoscopic depth cues (present and not present), and one of three viewpoints (elevation angles of 0o, 45o, and 90o).