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Proceedings Paper

3-D Measurements From Video Stereo Pairs
Author(s): M A Weissman
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Paper Abstract

We have developed a "Stereoscopic Imaging System" (SIS) which acquires stereo pairs from video cameras (or other RS170 sources), aligns and enhances the images as needed, stores and recalls them from disk, displays them in "true" 3-D on a stereo monitor, and provides 3-D measurements of objects and features in the composite image. The system is based on the Tektronix Stereoscopic Graphics System (Liquid Crystal Shutter SPU, Tektronix, Inc.). This system uses a screen-sized liquid crystal to modulate the polarity of the light coming from the monitor at a rate of 120 times per second, and the left and right views are sent to the monitor at the same rate (each view is displayed at 60 Hz). The viewer wears lightweight, passive glasses with left and right circularly polarized lens. The display is controlled by an AT-compatible graphics card (the Stereoscopic Graphic Adapter or SGA) that stores each image with a resolution of 512x512x8, has room for four images (two pairs), and drives an RGB color monitor (64 KHz). (SIS uses color for overlays, but it does not yet handle color images.)

Paper Details

Date Published: 8 June 1988
PDF: 2 pages
Proc. SPIE 0902, Three-Dimensional Imaging and Remote Sensing Imaging, (8 June 1988); doi: 10.1117/12.944766
Show Author Affiliations
M A Weissman, Microscience Inc. (United States)


Published in SPIE Proceedings Vol. 0902:
Three-Dimensional Imaging and Remote Sensing Imaging
Woodrow E. Robbins, Editor(s)

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