Stroboscopic phase-stepping digital speckle-pattern interferometry

Wen Zheng; Yushan Tan

doi:10.1117/12.135305

1 January 1992 Stroboscopic phase-stepping digital speckle-pattern interferometry

Wen Zheng, Yushan Tan

Proceedings Volume 1553, Laser Interferometry IV: Computer-Aided Interferometry; (1992) https://doi.org/10.1117/12.135305
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

In this paper, computer image processing techniques for the extraction of numerical data of vibration amplitude are presented using stroboscopic phase-stepping speckle interferograms. An automated analysis system based on IBM-PC microcomputer and PCVISION-plus Frame Grabber is developed which is able to acquire quantitative displacement information with high speed and accuracy. Effect of time integration during light pulses and f-number of image lens are discussed. Experimental results with out-of-plane resonant vibration metal plate are also given.

Citation Download Citation

Wen Zheng and Yushan Tan "Stroboscopic phase-stepping digital speckle-pattern interferometry", Proc. SPIE 1553, Laser Interferometry IV: Computer-Aided Interferometry, (1 January 1992); https://doi.org/10.1117/12.135305

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