Author(s)

M.L. Luchi, A. Poggialini & S. Rizzuti

Abstract

A C-library for fringe pattern processing M.L. Luchi, A. Poggialini, S. Rizzuti Department of Mechanical Engineering, University Italy ABSTRACT The paper describes a software library developed in C language for the automated analysis of the fringe patterns which are obtained by the interferometric techniques most frequently employed in experimental mechanics. Since the images acquired are generally affected by high- frequency noise (particularly significant in the case of speckle interferometry), it has been necessary to develop special procedures for determining peak location using the minimum amount of local information. INTRODUCTION Experimental mechanics relies on several non-contact optical methods capable of giving full-field information. Information is usually encoded in the form of fringe patterns which represent the contour loci of the quantities detected. Although sometimes the desired data can be directly extracted, more often further processing is neede

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