Phase extraction techniques in fringe analysis are very sensitive to noise but also to modulation defects mostly due to non-uniform illumination. For this reason, in many cases the fringe pattern modulation must be normalized before the phase map is extracted in order to avoid the introduction of large errors in the demodulated phase.
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References
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The authors would like to thank the financial support provided by Fundación Josefina Prats of Argentina
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Bernini, M.B., Federico, A., Kaufmann, G.H. (2009). Fringe Pattern Normalization Using Bidimensional Empirical Mode Decomposition and the Hilbert Transform. In: Osten, W., Kujawinska, M. (eds) Fringe 2009. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03051-2_33
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DOI: https://doi.org/10.1007/978-3-642-03051-2_33
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