Experiments in Fluids

, Volume 38, Issue 1, pp 21–32

Variational optical flow estimation for particle image velocimetry

Original Paper

DOI: 10.1007/s00348-004-0880-5

Cite this article as:
Ruhnau, P., Kohlberger, T., Schnörr, C. et al. Exp Fluids (2005) 38: 21. doi:10.1007/s00348-004-0880-5
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Abstract

We introduce a novel class of algorithms for evaluating PIV image pairs. The mathematical basis is a continuous variational formulation for globally estimating the optical flow vector fields over the whole image. This class of approaches has been known in the field of image processing and computer vision for more than two decades but apparently has not been applied to PIV image pairs so far. We pay particular attention to a multi-scale representation of the image data so as to cope with the quite specific signal structure of particle image pairs. The experimental evaluation shows that a prototypical variational approach competes in noisy real-world scenarios with three alternative approaches especially designed for PIV-sequence evaluation. We outline the potential of the variational method for further developments.

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Department of Mathematics and Computer ScienceComputer Vision, Graphics, and Pattern Recognition Group, University of Mannheim68131 MannheimGermany
  2. 2.Chair of Fluid Mechanics and AerodynamicsDarmstadt University of Technology64287 DarmstadtGermany

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