Noise-immune interference fringe analysis by modification of local intensity histogram and 2D Fourier transform method

Year: 2001

Authors: De Nicola S., Ferraro P., Gurov I., Koviazin R., Vo1kov M.

Autors Affiliation: Istituto di Cibernetica del CNR, via Toiano 6, Arco Felice 80072, Italy; Istituto Nazionale di Ottica Applicata, Sez. di Napoli, c/o Istituto di Cibernetica del CNR;
Institute of Fine Mechanics and Optics (Technical University), 14 Sablinskaya st., SaintPetersburg 197101, Russia

Abstract: A noise-immune method of phase retrieval of single moire interferometric hinge pattern is presented and discussed. The method is shown to provide accurate recovering of the phase information by combined method based on modification of local histogram of the fringe intensity and two dimensional Fourier transform of enhanced moire fringe pattern. The principle of the method is described and the experimental results of moire interferometric measurements with submicron sensitivity of the in-plane displacement fields of thick carbon fibre/PEEK composite laminates are presented as example of application of the technique.

Journal/Review: PROCEEDINGS OF SPIE

Volume: 4353      Pages from: 292  to: 297

KeyWords: interference fringe analysis; local intensity histogram; Fourier transform; phase recovering;
DOI: 10.1117/12.417750

Citations: 2
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