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Proceedings Paper

The Numerical Stereo Camera
Author(s): Martin D. Altschuler; Jeffrey L. Posdamer; Gideon Frieder; Bruce R. Altschuler; John Taboada
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Paper Abstract

We describe a "stereo camera" which rapidly acquires the (x,y,z) locations of a large number of sample points on a surface. The device works on the same triangulation principle as an ordinary stereo camera, but involves an active camera (coded-laser-beam-array projector), a passive camera (TV), and the software for pattern synchronization and analysis. The system involves (1) a single laser beam; (2) interference optics to transform the single beam into an array of laser beams; (3) a programmable electro-optic shutter which can block or transmit various subsets of the laser beams in the array; (4) a TV camera to view the environmental surfaces illuminated by the laser beam array; and (5) a processor which controls the shutter, synchronizes the shutter with the TV camera, and decodes the contents of the TV images of the different coded patterns projected on the environment. The system is being developed for rapid biomedical surface mapping but can also be used in vision aid for the blind, robot vision, assembly-line inspection, data acquisition for 3-D pattern recognition, and the monitoring of large surfaces and volumes (dams, construction processes, security areas, etc.).

Paper Details

Date Published: 29 October 1981
PDF: 10 pages
Proc. SPIE 0283, Three-Dimensional Machine Perception, (29 October 1981); doi: 10.1117/12.931984
Show Author Affiliations
Martin D. Altschuler, State University of New York at Buffalo (United States)
Jeffrey L. Posdamer, State University of New York at Buffalo (United States)
Gideon Frieder, State University of New York at Buffalo (United States)
Bruce R. Altschuler, USAF School of Aerospace Medicine (United States)
John Taboada, USAF School of Aerospace Medicine (United States)

Published in SPIE Proceedings Vol. 0283:
Three-Dimensional Machine Perception
Bruce R. Altschuler, Editor(s)

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