Paul Milgram and David Drascic
Department of Mechanical and Industrial Engineering
University of Toronto
Toronto, Ontario, Canada
Proceedings of the Human Factors and Ergonomics Society 41st Annual
Meeting,
Albuquerque, 1997
© Copyright 1997
The concept of Augmented Reality (AR) displays is defined, in relation
to the amount of real (unmodelled) and virtual (modelled) data presented
in an image, as those displays in which real images, such as video, are
enhanced with computer generated graphics. For the important class of stereoscopic
AR displays, several factors may cause potential perceptual ambiguities,
however, which manifest themselves in terms of decreased accuracy and precision
whenever virtual objects must be aligned with real ones. A review is given
of research conducted to assess both the magnitude of these perceptual effects
and the effectiveness of a computer assisted Virtual Tape Measure (VTM),
which has been developed for performing quantitative 3D measurements on
real-world stereo images.