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Proceedings Paper

Uniaxis rangefinder using contrast detection of a projected pattern
Author(s): Toru Yoshizawa; Tomotaka Shinoda; Yukitoshi Otani
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Paper Abstract

12 Many methods have been proposed for range finding systems to know the distance of the targets. We try to capture profiles of objects in addition to the distance of objects using optical principle. When a grating pattern is projected on to the object to be measured, the projected pattern is sharply observed on a focused plane. And the pattern blurs due to defocusing except on this focused plane. We detect contrast variation of the projected grating pattern and calculate the distance to the object and captures its shapes at the same time. This method features in using merely one optical axis in range finding system.

Paper Details

Date Published: 12 February 2001
PDF: 8 pages
Proc. SPIE 4190, Optomechatronic Systems, (12 February 2001); doi: 10.1117/12.417217
Show Author Affiliations
Toru Yoshizawa, Tokyo Univ. of Agriculture and Technology (Japan)
Tomotaka Shinoda, Tokyo Univ. of Agriculture and Technology (Japan)
Yukitoshi Otani, Tokyo Univ. of Agriculture and Technology (Japan)

Published in SPIE Proceedings Vol. 4190:
Optomechatronic Systems
Hyungsuck Cho; George K. Knopf, Editor(s)

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