1 January 2002 Application of wavelet filtering for vibration analysis using digital speckle pattern interferometery
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Optical Engineering, 41(1), (2002). doi:10.1117/1.1420192
Abstract
We have investigated the utility of wavelet filters for enhancing contrast in the digital speckle pattern interferometric fringes obtained from a vibrating loudspeaker diaphragm and from the vibrating bracket of an electric motor. Experimental results reveal that use of properly chosen other filters along with the wavelet filter gives better enhancement. Our investigations also show that if the data are preprocessed by median filtering before implementing the wavelet filtering, then a weakly diffusing object requires a higher-kernel filter and strongly diffusing object requires lower-kernel one.
Chandra Shakher, Rajesh Kumar, Shashi Kumar Singh, Saba Akhter Kazmi, "Application of wavelet filtering for vibration analysis using digital speckle pattern interferometery," Optical Engineering 41(1), (1 January 2002). http://dx.doi.org/10.1117/1.1420192
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KEYWORDS
Wavelets

Digital filtering

Image filtering

Fringe analysis

Linear filtering

Speckle pattern

Optical filters

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