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Proceedings Paper

Measurement of time-dependent displacement using dual speckle pattern phase-shifting TV holography
Author(s): Christopher T. Griffen; Fang Chen; Y.Y. Hung
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Paper Abstract

This paper presents a method for measuring time dependent displacement using a dual speckle pattern acquisition and single camera TV holographic system. Two speckle patterns with 90 degree phase difference are acquired simultaneously. As the displacement changes with respect to time, a series of dual speckle patterns can be digitized into a computer image processing system. A Fourier transformation is used to remove the DC terms of the speckle patterns. A phase unwrapping algorithm is employed to calculate the phase distribution related to the time dependent displacement. The theoretical concept together with experimental simulation are presented.

Paper Details

Date Published: 18 August 1995
PDF: 9 pages
Proc. SPIE 2622, Optical Engineering Midwest '95, (18 August 1995); doi: 10.1117/12.216850
Show Author Affiliations
Christopher T. Griffen, Oakland Univ. (United States)
Fang Chen, Oakland Univ. (United States)
Y.Y. Hung, Oakland Univ. (United States)


Published in SPIE Proceedings Vol. 2622:
Optical Engineering Midwest '95
Rudolph P. Guzik, Editor(s)

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