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Davila A, Kerr D, Kaufmann GH. Digital processing of electronic speckle pattern interferometry addition fringes. Appl Opt. 1994;33(25):5964-9doi: 10.1364/AO.33.005964.
Davila, A., Kerr, D., & Kaufmann, G. H. (1994). Digital processing of electronic speckle pattern interferometry addition fringes. Applied optics, 33(25), 5964-9. https://doi.org/10.1364/AO.33.005964
Davila, A, et al. "Digital processing of electronic speckle pattern interferometry addition fringes." Applied optics vol. 33,25 (1994): 5964-9. doi: https://doi.org/10.1364/AO.33.005964
Davila A, Kerr D, Kaufmann GH. Digital processing of electronic speckle pattern interferometry addition fringes. Appl Opt. 1994 Sep 01;33(25):5964-9. doi: 10.1364/AO.33.005964. PMID: 20936007.
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Appl Opt. 1994 Sep 01;33(25):5964-9. doi: 10.1364/AO.33.005964.

Digital processing of electronic speckle pattern interferometry addition fringes.

Applied optics

A Davila, D Kerr, G H Kaufmann

PMID: 20936007 DOI: 10.1364/AO.33.005964

Abstract

A digital image-processing method for analyzing double-pulsed electronic speckle pattern interferometry addition fringes is described. The procedure consists of three steps, forming a combination particularly suited to addressing some important practical limitations of the measurement system. In the first step it is shown that in certain cases fringe visibility may be enhanced by subtraction of a reference interferogram, so that a pattern with a quality similar to that of a subtraction one is obtained. In the second step noise is reduced by the application of a spectral subtraction image-restoration method. The third step concerns the calculation of the wrapped phase by means of a Fourier transform method with bandpass filtering. Preliminary experimental results that illustrate the performance of this approach are presented.

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