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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 18 — Jun. 20, 2007
  • pp: 3709–3715

Speckle correlation method used to measure object's in-plane velocity

Petr Šmíd, Pavel Horváth, and Miroslav Hrabovský  »View Author Affiliations

Applied Optics, Vol. 46, Issue 18, pp. 3709-3715 (2007)

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We present a measurement of an object's in-plane velocity in one direction by the use of the speckle correlation method. Numerical correlations of speckle patterns recorded periodically during motion of the object under investigation give information used to evaluate the object's in-plane velocity. The proposed optical setup uses a detection plane in the image field and enables one to detect the object's velocity within the interval ( 10 150 ) μm s   1 . Simulation analysis shows a way of controlling the measuring range. The presented theory, simulation analysis, and setup are verified through an experiment of measurement of the velocity profile of an object.

© 2007 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(100.2000) Image processing : Digital image processing
(110.6150) Imaging systems : Speckle imaging
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging
(120.7250) Instrumentation, measurement, and metrology : Velocimetry
(280.7250) Remote sensing and sensors : Velocimetry

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: December 18, 2006
Manuscript Accepted: February 12, 2007
Published: May 31, 2007

Petr Šmíd, Pavel Horváth, and Miroslav Hrabovský, "Speckle correlation method used to measure object's in-plane velocity," Appl. Opt. 46, 3709-3715 (2007)

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