Scale-space filter for smoothing electronic speckle pattern interferometry fringes

Abundio Davila; Guillermo H. Kaufmann; David Kerr

doi:10.1117/1.601090

1 December 1996 Scale-space filter for smoothing electronic speckle pattern interferometry fringes

Abundio Davila, Guillermo H. Kaufmann, David Kerr

Optical Engineering, Vol. 35, Issue 12, (December 1996). https://doi.org/10.1117/1.601090

Processing of correlation fringes obtained from electronic speckle pattern interferometry (ESPI) requires the use of a digital filter to reduce the speckle noise. Even though smoothing algorithms based on the Fourier transform significantly suppress speckle noise, they do not preserve the image characteristics. The application of a scale-space filter to reduce speckle noise in ESPI fringes is reported. Results obtained using both computer-simulated and experimental fringe patterns are used to test the scale-space filter and they are also compared with those obtained by Fourier, convolution, and median filtering.

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Abundio Davila, Guillermo H. Kaufmann, and David Kerr "Scale-space filter for smoothing electronic speckle pattern interferometry fringes," Optical Engineering 35(12), (1 December 1996). https://doi.org/10.1117/1.601090

Published: 1 December 1996

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