1 January 1987 Automatic Processing Of Speckle Photography Fringes: Comparison Of Two Methods
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Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967398
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada
Abstract
Speckle photography is a powerful method for measuring in-plane displacement and surface rotation. Quantitative evaluation is performed using a pointwise approach based in the analysis of cosine square fringes which modulate a diffraction halo. The fringe spacing is inversely proportional to the displacement of the speckle pattern and the fringes are perpendicular to the displacement vector. Complete analysis of a 2-D strain field involves the measurement of the spacing and the direction of the fringe pattern on a square mesh covering the specklegram. However, this manual procedure becomes impractical when a large number of measurements are needed.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. H. Kaufmann, G. H. Kaufmann, H. D. Navone, H. D. Navone, } "Automatic Processing Of Speckle Photography Fringes: Comparison Of Two Methods", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); doi: 10.1117/12.967398; https://doi.org/10.1117/12.967398
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