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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 11 — Apr. 10, 2007
  • pp: 1979–1985

Multiscale analysis of the intensity fluctuation in a time series of dynamic speckle patterns

Alejandro Federico and Guillermo H. Kaufmann  »View Author Affiliations


Applied Optics, Vol. 46, Issue 11, pp. 1979-1985 (2007)
http://dx.doi.org/10.1364/AO.46.001979


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Abstract

We propose the application of a method based on the discrete wavelet transform to detect, identify, and measure scaling behavior in dynamic speckle. The multiscale phenomena presented by a sample and displayed by its speckle activity are analyzed by processing the time series of dynamic speckle patterns. The scaling analysis is applied to the temporal fluctuation of the speckle intensity and also to the two derived data sets generated by its magnitude and sign. The application of the method is illustrated by analyzing paint-drying processes and bruising in apples. The results are discussed taking into account the different time organizations obtained for the scaling behavior of the magnitude and the sign of the intensity fluctuation.

© 2007 Optical Society of America

OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging

ToC Category:
Fourier Optics and Optical Signal Processing

History
Original Manuscript: August 10, 2006
Revised Manuscript: October 9, 2006
Manuscript Accepted: November 14, 2006
Published: March 20, 2007

Citation
Alejandro Federico and Guillermo H. Kaufmann, "Multiscale analysis of the intensity fluctuation in a time series of dynamic speckle patterns," Appl. Opt. 46, 1979-1985 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-11-1979

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