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Proceedings Paper

Image-side perspective and stereoscopy
Author(s): John Bercovitz
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Paper Abstract

Correct perspective is crucial to orthostereoscopy. That is to say, the observer must view from the same points in space, relative to the image, that the stereo camera's lenses had relative to the scene. Errors in placement of the observation points result in distortion of the reconstructed stereo image. Although people adapt easily to visual distortions, they may not do it well enough or quickly enough for critical telepresence and telerobotic applications. Further, it is difficult for humans to reliably determine by sight the correct observation point relative to an image. A mathematical guide to correct perspective is therefore useful. The mathematical key to perspective is that all images must subtend at the eye the same angles which the objects that generated them subtended at the camera. The center of perspective on the object side of a camera is the entrance pupil, but where is the center of perspective on the image side of an asymmetrical lens? A simple formula simply derived answers that question. By way of background, pertinent optics and stereoscopic reconstruction errors, including perspective error, are reviewed in this paper. New work begins in the fourth section.

Paper Details

Date Published: 30 April 1998
PDF: 11 pages
Proc. SPIE 3295, Stereoscopic Displays and Virtual Reality Systems V, (30 April 1998); doi: 10.1117/12.307152
Show Author Affiliations
John Bercovitz, Lawrence Berkeley National Lab. (United States)

Published in SPIE Proceedings Vol. 3295:
Stereoscopic Displays and Virtual Reality Systems V
Mark T. Bolas; Mark T. Bolas; Scott S. Fisher; Scott S. Fisher; John O. Merritt, Editor(s)

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