Application of wavelet filtering for vibration analysis using digital speckle pattern interferometery

Chandra Shakher; Rajesh Kumar; Shashi Kumar Singh; Saba Akhter Kazmi

doi:10.1117/1.1420192

1 January 2002 Application of wavelet filtering for vibration analysis using digital speckle pattern interferometery

Chandra Shakher, Rajesh Kumar, Shashi Kumar Singh, Saba Akhter Kazmi

Optical Engineering, Vol. 41, Issue 1, (January 2002). https://doi.org/10.1117/1.1420192

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.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Chandra Shakher, Rajesh Kumar, Shashi Kumar Singh, and Saba Akhter Kazmi "Application of wavelet filtering for vibration analysis using digital speckle pattern interferometery," Optical Engineering 41(1), (1 January 2002). https://doi.org/10.1117/1.1420192

Published: 1 January 2002

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