Publication: Algorithm for fringe pattern normalization
Loading...
Official URL
Full text at PDC
Publication Date
2001-09-15
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Science BV
Abstract
In this work we present a new algorithm for fringe pattern normalization, that is. background suppression and modulation normalization. Normalization is necessary for several fringe pattern processing techniques. For example, this is the case of the regularization and phase sampling methods. In general, background suppression can be accomplished by high-pass filtering, however if modulation is not constant or almost constant over the field of view, normalization is a difficult task. The solution proposed is based in the use of two orthogonal bandpass filters, from which a normalized irradiance distribution is obtained. We have applied the method to simulated as well as experimental data with good results.
Description
© 2001 Elsevier Science B.V.
We wish to thank the economical support of this work given by European Union, project INDUCE, BRPR-CT97-0805.
UCM subjects
Unesco subjects
Keywords
Citation
[1] D. Malacara, M. Servı́n, Z. Malacara. Interferogram Análisis for Optical TestingMarcel Dekker, New York (1998).
[2] M. Servín, J.L. Marroquin, F.J. Cuevas. Demodulation of a single interferogram by use of a two-dimensional regularized phase-tracking technique. Appl. Opt., 36 (1997), pp. 4540–4548.
[3] T.M. Kreis, W.P.O. Jüpner. Fourier-transform evaluation of interference patterns: the role of filtering in the spatial frequency domain, Laser Interferometry Quantitative Analysis of Interferograms. Proc. SPIE, 1162 (1989), pp. 116–125.
[4] R.N. Bracewell. The Fourier Transform and its Applications (second ed.)McGraw-Hill, New York (1978).
[5] P.S. Teocaris, E.E. Gdoutos. Matrix Theory of Photoelasticity. Springer-Verlag, Berlin (1979).