GVU Technical Report Number:
GIT-GVU-91-31
Title:
Evaluation of Display Parameters Affecting User Performance of an
Interactive Task in a Virtual Environment
Authors:
Shane McWhorter
Larry Hodges
Walter Rodriguez
Abstract:
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).
Keywords:
Stereoscopic displays, human factors, virtual environments,
visualization, usability
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