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Proceedings Paper

Some preliminary results on using spatial locality to speed up ray tracing of stereoscopic images
Author(s): John D. Ezell; Larry F. Hodges
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Paper Abstract

Display of a stereoscopic scene requires the generation of two differently projected views of a scene, referred to as the left-eye image and the right-eye image. Stereoscopic images exhibit spatial locality in that the relative displacement between the left-eye and right-eye viewing positions is small enough such that the left and right-eye images are similar in many respects. In this paper we present an algorithm that takes advantage of spatial locality to significantly reduce the computation time needed to ray trace the right-eye image of a stereo pair by using the information available in the left-eye image. The algorithm is derived by combining the repmjection algorithm presented described by Badt for fast generation of animation frames with the stereoscopic perspective projection technique presented in Hodges, et. 1,4

Paper Details

Date Published: 1 September 1990
PDF: 9 pages
Proc. SPIE 1256, Stereoscopic Displays and Applications, (1 September 1990); doi: 10.1117/12.19912
Show Author Affiliations
John D. Ezell, Digital Communications Associates, Inc. (United States)
Larry F. Hodges, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 1256:
Stereoscopic Displays and Applications
John O. Merritt; Scott S. Fisher, Editor(s)

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