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Optical Engineering

Normalization and smoothing algorithm for electronic speckle-pattern interferometry fringes
Author(s): Noe Alcala Ochoa
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Paper Abstract

This work points out that a modification of the fringe analysis method proposed by Kreis may serve as a normalization and filtering method for electronic speckle-pattern interferometry (ESPI) fringes. By rotating a half-plane in the frequency space, a fringe pattern may be normalized without being distorted significantly. If a passband filter is used during the rotation, a smoothed fringe pattern is obtained. Experimental verification is presented using images obtained from ESPI.

Paper Details

Date Published: 1 April 2008
PDF: 7 pages
Opt. Eng. 47(4) 045601 doi: 10.1117/1.2908959
Published in: Optical Engineering Volume 47, Issue 4
Show Author Affiliations
Noe Alcala Ochoa, Ctr. de Investigaciones en Óptica, A.C. (Mexico)

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