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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 36 — Dec. 20, 2007
  • pp: 8645–8655

Kinematic and deformation parameter measurement by spatiotemporal analysis of an interferogram sequence

Yu Fu, Roger M. Groves, Giancarlo Pedrini, and Wolfgang Osten  »View Author Affiliations


Applied Optics, Vol. 46, Issue 36, pp. 8645-8655 (2007)
http://dx.doi.org/10.1364/AO.46.008645


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Abstract

In recent years, optical interferometry has been applied to the whole-field, noncontact measurement of vibrating or continuously deforming objects. In many cases, a high resolution measurement of kinematic (displacement, velocity, and acceleration, etc.) and deformation parameters (strain, curvature, and twist, etc.) can give useful information on the dynamic response of the objects concerned. Different signal processing algorithms are applied to two types of interferogram sequences, which were captured by a high-speed camera using different interferometric setups: (1) a speckle or fringe pattern sequence with a temporal carrier and (2) a wrapped phase map sequence. These algorithms include Fourier transform, windowed Fourier transform, wavelet transform, and even a combination of two of these techniques. We will compare these algorithms using the example of a 1D temporal evaluation of interferogram sequences and extend these algorithms to 2D and 3D processing, so that accurate kinematic and deformation parameters of moving objects can be evaluated with different types of optical interferometry.

© 2007 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(100.6890) Image processing : Three-dimensional image processing
(100.7410) Image processing : Wavelets
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: September 4, 2007
Revised Manuscript: November 7, 2007
Manuscript Accepted: November 15, 2007
Published: December 19, 2007

Citation
Yu Fu, Roger M. Groves, Giancarlo Pedrini, and Wolfgang Osten, "Kinematic and deformation parameter measurement by spatiotemporal analysis of an interferogram sequence," Appl. Opt. 46, 8645-8655 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-36-8645

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