Evaluation of a scale-space filter for speckle noise reduction in  electronic speckle pattern interferometry

Pablo D. Ruiz; Guillermo H. Kaufmann

doi:10.1117/1.601983

1 August 1998 Evaluation of a scale-space filter for speckle noise reduction in electronic speckle pattern interferometry

Pablo D. Ruiz, Guillermo H. Kaufmann

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Optical Engineering, Vol. 37, Issue 8, (August 1998). https://doi.org/10.1117/1.601983

Recently, the application of a scale-space filter for speckle noise reduction in electronic speckle pattern interferometry correlation fringes was reported. The filter, derived from information theory and statistical mechanics considerations, is an iterative, adaptive, and clustering algorithm that performs edge-preserving smoothing. To apply the filter, the kernel size and the number of iterations must be previously set. We show that both parameters can be chosen depending on image features, e.g., presence or absence of sharp edges due to shadows, holes, or physical limits of the test object. When high-contrast edges are present, it is also shown that better noise reduction and edge preservation are obtained when the convergence of the solution of the filter is truncated. Both computer-simulated and experimental correlation fringes are used to test the scale-space filter.

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Pablo D. Ruiz and Guillermo H. Kaufmann "Evaluation of a scale-space filter for speckle noise reduction in electronic speckle pattern interferometry," Optical Engineering 37(8), (1 August 1998). https://doi.org/10.1117/1.601983

Published: 1 August 1998

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