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Proceedings Paper

Stroboscopic phase-stepping digital speckle-pattern interferometry
Author(s): Wen Zheng; Yushan Tan
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Paper 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.

Paper Details

Date Published: 1 January 1992
PDF: 8 pages
Proc. SPIE 1553, Laser Interferometry IV: Computer-Aided Interferometry, (1 January 1992); doi: 10.1117/12.135305
Show Author Affiliations
Wen Zheng, Xi'an Jiaotong Univ. (China)
Yushan Tan, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 1553:
Laser Interferometry IV: Computer-Aided Interferometry
Ryszard J. Pryputniewicz, Editor(s)

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