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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 18 — Sep. 9, 2002
  • pp: 927–941

Performance analysis of a maximum-likelihood speckle motion estimator

Donald D. Duncan and Sean J. Kirkpatrick  »View Author Affiliations


Optics Express, Vol. 10, Issue 18, pp. 927-941 (2002)
http://dx.doi.org/10.1364/OE.10.000927


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Abstract

Presented herein is a performance analysis of a maximum likelihood estimator for calculating small speckle motions. Such estimators are important in a variety of speckle techniques used in non-destructive evaluation. The analysis characterizes the performance (bias and RMS deviation) of the estimator as a function of the signal-to-noise ratio. This SNR parameter is a convenient surrogate for decorrelation of sequential speckle patterns such as are seen in biological tissues. Although the particular estimator is predicated on speckle motions that are a small fraction of a pixel, accurate performance is demonstrated for instantaneous motions of up to ±0.8 pixel/record. Beyond this point, more conventional approaches have been shown to perform well.

© 2002 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging

ToC Category:
Research Papers

History
Original Manuscript: July 17, 2002
Revised Manuscript: August 23, 2002
Published: September 9, 2002

Citation
Donald Duncan and Sean Kirkpatrick, "Performance analysis of a maximum-likelihood speckle motion estimator," Opt. Express 10, 927-941 (2002)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-10-18-927


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References

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