This paper was published in:
SPIE Volume 2653: Stereoscopic Displays and Virtual Reality Systems III
Editors: Mark T. Bolas, Scott S. Fisher, John O. Merritt
San Jose, California, USA, January - February 1996
pp 123-134

Between the extremes of real life and Virtual Reality lies the spectrum of Mixed Reality, in which views of the real world are combined in some proportion with views of a virtual environment. Combining direct view, stereoscopic video, and stereoscopic graphics, Augmented Reality describes that class of displays that consists primarily of a real environment, with graphic enhancements or augmentations. Augmented Virtuality describes that class of displays that enhance the virtual experience by adding elements of the real environment. All Mixed Reality systems are limited in their capability of accurately displaying and controlled all relevant depth cues, and as a result, perceptual biases can interfere with task performance. In this paper we identify and discuss eighteen issues that pertain to Mixed Reality in general, and Augmented Reality in particular.

Keywords: stereoscopic displays, augmented reality, virtual reality, depth perception, human factors

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