Experiments in Fluids

, Volume 35, Issue 3, pp 252–256 | Cite as

Optimal subpixel interpolation in particle image velocimetry



It is shown that among the different techniques for particle image velocimetry subpixel interpolation, only the "sinc"-kernel creates an optimal result in that it completely suppresses spurious spectral sidelobes. An efficient method is introduced for the computation of the subpixel-accurate correlation peak position without any systematic errors. A connection is made with the kernel-dependent observation of the peak-locking phenomenon.


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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  1. 1.Institute of Fluid DynamicsSwiss Federal Institute of Technology, ETH ZentrumZurichSwitzerland

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