Experiments in Fluids

, Volume 25, Issue 3, pp 177–189 | Cite as

Particle image velocimetry with optical flow

  • G. M. Quénot
  • J. Pakleza
  • T. A. Kowalewski
Originals

Abstract

 An optical Flow technique based on the use of Dynamic Programming has been applied to Particle Image Velocimetry thus yielding a significant increase in the accuracy and spatial resolution of the velocity field. Results are presented for calibrated synthetic sequences of images and for sequences of real images taken for a thermally driven flow of water with a freezing front. The accuracy remains better than 0.5 pixel/frame for tested two-image sequences and 0.2 pixel/frame for four-image sequences, even with a 10% added noise level and allowing 10% of particles of appear or disappear. A velocity vector is obtained for every pixel of the image.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • G. M. Quénot
    • 1
  • J. Pakleza
    • 1
  • T. A. Kowalewski
    • 2
  1. 1.LIMSI-CNRS, BP 133 Université de Paris Sud, Bâtiment 508 F-91403 Orsay Cedex, FranceFR
  2. 2.IPPT PAN, Centre of Mechanics Polish Academy of Sciences PL-00-049 Warszawa, PolandPL

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