APPLYING SPECKLE-INTERFEROMETRY TO THE SHAPE MEASUREMENT OF MOVING OBJECTS

Andreas Meixner, Andreas Purde, Philipp Kirilenko

Abstract

Speckle-interferometry is a very interesting group of measurement methods based on coherent light dissipation properties. There are a lot of applications of this effect, but the most interesting one is shape-measurement. It is astonishing that a nearly random structure of speckle image can contain information about the contour of the object illuminated by coherent light. The method is well-known but it is not so popular because of great disadvantage: method needs very good stability of the measurement object and instrument. So this technique was applied only in laboratory for a long time.<BR />In this article we want to present special algorithms and setups which permit applying speckle-interferometry out of the lab – in industrial conditions.

Keywords

shape measurement, speckle-interferometry, two-cameras setup

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IMEKO-TC7-2004-002.pdf

DOI

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IMEKO TC

TC7 - Measurement Science

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