Normalization and smoothing algorithm for electronic speckle-pattern interferometry fringes

Noe Alcala Ochoa

doi:10.1117/1.2908959

1 April 2008 Normalization and smoothing algorithm for electronic speckle-pattern interferometry fringes

Noe Alcala Ochoa;

Author Affiliations +

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.

Citation Download Citation

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

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