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Proceedings Paper

Method for evaluating displacement of objects using the Wigner distribution function
Author(s): Joewono Widjaja; Jun Uozumi; Toshimitsu Asakura
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Paper Abstract

A new method is proposed for evaluating the local displacement of objects in speckle photography by using a Wigner distribution function (WDF). It is applied to evaluate the displacement of 1D specklegrams as well as specklegrams of the ground glass and rubber plate which are slightly shifted and stretched, respectively. As a preliminary study, the local spectra W(x,(omega) ) are qualitatively and quantitatively verified in comparison with the theoretical results and the conventional Young''s interference fringes. The results show the feasibility of evaluating the displacement of objects using the WDF.

Paper Details

Date Published: 1 March 1991
PDF: 7 pages
Proc. SPIE 1400, Optical Fabrication and Testing, (1 March 1991); doi: 10.1117/12.47845
Show Author Affiliations
Joewono Widjaja, Hokkaido Univ. (Japan)
Jun Uozumi, Hokkaido Univ. (Japan)
Toshimitsu Asakura, Hokkaido Univ. (Japan)

Published in SPIE Proceedings Vol. 1400:
Optical Fabrication and Testing
Manfred Lorenzen; Duncan R. J. Campbell; Craig Johnson, Editor(s)

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