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

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

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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. #1998 Society of Photo-Optical Instrumentation Engineers. S0091-3286(98)02408-8 Subject terms: speckle noise reduction; electronic speckle pattern interferometry; adaptive filtering; clustering; edge-preserving smoothing. Paper 09097 received Sep. 8, 1997; revised manuscript received Feb. 27, 1998; accepted for publication Feb. 28, 1998.

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《Optical Engineering》 |1998年第9期|2395-2401|共7页
作者
Pablo d. Ruiz; Guillermo H. Kaufmann;
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Instiuto de Física Rosario (CONICET-UNR)/ Rosario 2000 Argenina;

Instiuto de Física Rosario (CONICET-UNR) and Universidad Nacional de Rosario Departamento de Física Facultad de Ciencias Exactas, Ingeniería y Agrimensura/ Rosario 2000 Argenina E-mail: guille@ifir.ifir.edu.ar;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
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Evaluation of a scale-space filter for speckle noise reduction in electronic speckle pattern interferometry

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