1 April 2008 Normalization and smoothing algorithm for electronic speckle-pattern interferometry fringes
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Optical Engineering, 47(4), 045601 (2008). doi:10.1117/1.2908959
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.
Noe Alcala Ochoa, "Normalization and smoothing algorithm for electronic speckle-pattern interferometry fringes," Optical Engineering 47(4), 045601 (1 April 2008). http://dx.doi.org/10.1117/1.2908959
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KEYWORDS
Fringe analysis

Speckle

Interferometry

Image filtering

Modulation

Optical engineering

Smoothing

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