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Proceedings Paper

Surface Form Measurement By Heterodyne Moire Contouring
Author(s): G. T. Reid
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Paper Abstract

Limitations in the densitometric analysis of moire contour patterns have been considered. A fringe analysis method based on heterodyne detection is described. The heterodyne method is shown to be comparatively insensitive to variations in the light-scattering properties of the surface and to allow automatic differentiation between concavity and convexity.

Paper Details

Date Published: 10 August 1983
PDF: 7 pages
Proc. SPIE 0376, Optical Sensing: Techniques, Benefits, Costs, (10 August 1983); doi: 10.1117/12.934718
Show Author Affiliations
G. T. Reid, Department of Industry (England)

Published in SPIE Proceedings Vol. 0376:
Optical Sensing: Techniques, Benefits, Costs
S. J. Bennett, Editor(s)

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