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Proceedings Paper

Automated Digital Analysis Of Holographic Interferograms Of Pure Translations
Author(s): A. Choudry; H. J. Frankena; J. W. van Beek
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Paper Abstract

Holographic interferometry is a versatile technique for non-tactile measurement of changes in a wide variety of physical variables such as temperature, strain, position etc. It has a great potential for becoming an important metrologic technique in industrial applications. For holographic interferometry to become more attractive for industrial practice the problem of quantitative analysis of the patterns and thereby eliciting reliable values of the relevant parameters has to be addressed. In an attempt to calibrate the technique of holographic interferometry and ascertain the reliability of the subsequent digital analysis, we have chosen precisely known translations as a basis. Holographic interferograms taken from these are analysed manually and by digital techniques specially developed for such patterns. The results are promising enough to indicate the feasibility of automated digital analysis for determining translations within an acceptable accuracy. Some details of the evaluation techniques, along with a brief discussion of the preliminary results are presented.

Paper Details

Date Published: 26 October 1983
PDF: 7 pages
Proc. SPIE 0398, Industrial Applications of Laser Technology, (26 October 1983); doi: 10.1117/12.935356
Show Author Affiliations
A. Choudry, University of Amsterdam (The Netherlands)
H. J. Frankena, Delft University of Technology (The Netherlands)
J. W. van Beek, Delft University of Technology (The Netherlands)

Published in SPIE Proceedings Vol. 0398:
Industrial Applications of Laser Technology
William F. Fagan, Editor(s)

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