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Algorithm for fringe pattern normalization

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Quiroga Mellado, Juan Antonio and Gómez Pedrero, José Antonio and García Botella, Ángel (2001) Algorithm for fringe pattern normalization. Optics Communications, 197 (1-3). pp. 43-51. ISSN 0030-4018

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Official URL: http://dx.doi.org/10.1016/S0030-4018(01)01440-7


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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.


Item Type:Article
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© 2001 Elsevier Science B.V.
We wish to thank the economical support of this work given by European Union, project INDUCE, BRPR-CT97-0805.

Uncontrolled Keywords:Fringe Pattern Processing, Optical Metrology, Fourier Transform, Background Suppression, Normalization
Subjects:Sciences > Physics > Optics
ID Code:23142
Deposited On:14 Oct 2013 11:21
Last Modified:07 Feb 2014 10:57

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