GVU Technical Report Number:
GIT-GVU-91-04
Title:
Comparison of 3-D display formats for CAD applications
Authors:
S.W. McWhorter
Larry F. Hodges
W.E. Rodriguez
Abstract:
Two experiments were performed to rank different types of display formats
common to CAD applications in terms of geometric information conveyed and
perceived realism of objects. Display types tested were: wireframe,
wireframe with hidden lines removed (HLR), shaded solid, orthogonal
multi-view, stereoscopic wireframe, stereoscopic HLR, and stereoscopic
shaded solid. The results of the geometric information experiment
indicated that the orthogonal multi-view display was judged inferior to
both the non-stereo and stereo pictorial displays and that the stereo
displays were judged superior to the non-stereo displays in providing
geometric information to the subject. Individual preferences among
subjects, however, varied widely. The results of the realism experiment
indicated that the flat shaded stereo, HLR stereo, and the flat shaded
display types were judged to be equivalent and most realistic. The
wireframe stereo, HLR and wireframe displays were judged to be equivalent
and less realistic. The orthogonal views display was judged to be the
least realistic.
Keywords:
Three-dimensional displays, CAD, perceived realism, stereoscopic displays
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