GVU Technical Report Number:
GIT-GVU-91-05
Title:
Visible Surface Ray-Tracing of Stereoscopic Images
Authors:
Stephen J. Adelson
Larry F. Hodges
Abstract:
Ray-tracing is a well-known method for producing realistic images. If we
wish to view a ray-traced image stereoscopically, we must create two distinct
views of the image: a left-eye view and a right-eye view. The most
straight-forward way to do this is to ray-trace both views, doubling the
required work for a single perspective image. We have developed a
reprojection algorithm that produces stereoscopic images efficiently with
little degradation in image quality. In this paper, we derive the necessary
stereoscopic separation technique required to transform a ray-traced left-eye
view into an inferred right-eye view. Minor changes in the technique needed
to expand from single to multiple rays per pixel are noted. Finally, results
from evaluating several random scenes are given, which indicate that the
second view in a stereo image can be computed with less than 16 percent
of the effort of computing the first.
Keywords:
Ray-tracing, stereoscopic images
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