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Proceedings Paper

New automatic FFT filtration method for phase maps and its application in speckle interferometry
Author(s): Assen Shulev; Ilija Russev; Ventseslav Christov Sainov
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Paper 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.

Paper Details

Date Published: 27 May 2003
PDF: 5 pages
Proc. SPIE 4933, Speckle Metrology 2003, (27 May 2003); doi: 10.1117/12.516658
Show Author Affiliations
Assen Shulev, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Institute of Mechanics, Bulgarian Academy of Sciences (Bulgaria)
Ilija Russev, Institute of Mechanics, Bulgarian Academy of Sciences (Bulgaria)
Ventseslav Christov Sainov, Central Lab. of Optical Storage and Processing (Bulgaria)

Published in SPIE Proceedings Vol. 4933:
Speckle Metrology 2003
Kay Gastinger; Ole Johan Lokberg; Svein Winther, Editor(s)

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