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Proceedings Paper

Surface Roughness Measurement By 2-D Digital Correlation Of Speckle Images
Author(s): Bernhard Ruffing; Johannes Anschutz
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Paper Abstract

An optical roughness measuring instrument has been developed for applications in the field of mechanical engineering. It is based upon the angular-speckle-correlation (ASC) method. Two-dimensional processing of the digitized speckle patterns is performed by means of a fast correlation algorithm. Alignment errors, which inevitably occur in practice and may impair the measurement, can be compensated by evaluating the position of the maximum value of the 2D-cross-correlation function of the speckle patterns. Experiments have been carried out using differently machined rough surface samples.

Paper Details

Date Published: 17 February 1987
PDF: 8 pages
Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); doi: 10.1117/12.941680
Show Author Affiliations
Bernhard Ruffing, Institut fur Mess- und Regelungstechnik (Federal Republic of Germany)
Johannes Anschutz, Institut fur Mess- und Regelungstechnik (Federal Republic of Germany)


Published in SPIE Proceedings Vol. 0814:
Photomechanics and Speckle Metrology
Fu-Pen Chiang, Editor(s)

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