New automatic FFT filtration method for phase maps and its application in speckle interferometry

Assen Shulev; Ilija Russev; Ventseslav Christov Sainov

doi:10.1117/12.516658

27 May 2003 New automatic FFT filtration method for phase maps and its application in speckle interferometry

Assen Shulev, Ilija Russev, Ventseslav Christov Sainov

Proceedings Volume 4933, Speckle Metrology 2003; (2003) https://doi.org/10.1117/12.516658
Event: Speckle Metrology 2003, 2003, Trondheim, Norway

Abstract

In this article a new automatic phase FFT filtration method is described. It is compared with other well known filtration techniques for noise removal. This automatic FFT filter is applied on interferograms obtained through one dimensional folding shear interferometry for displacements measurement of a loaded glass flask. Different algorithms have been applied for processing of digitally synthesized phase maps and the advantages of the enhanced automatic FFT filtration are shown. The phase filtered maps obtained in this way can be demodulated even with the simplest unwrapping technique.

Citation Download Citation

Assen Shulev, Ilija Russev, and Ventseslav Christov Sainov "New automatic FFT filtration method for phase maps and its application in speckle interferometry", Proc. SPIE 4933, Speckle Metrology 2003, (27 May 2003); https://doi.org/10.1117/12.516658

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