Experiments in Fluids

, Volume 39, Issue 6, pp 1096–1100

Universal outlier detection for PIV data


DOI: 10.1007/s00348-005-0016-6

Cite this article as:
Westerweel, J. & Scarano, F. Exp Fluids (2005) 39: 1096. doi:10.1007/s00348-005-0016-6


An adaptation of the original median test for the detection of spurious PIV data is proposed that normalizes the median residual with respect to a robust estimate of the local variation of the velocity. It is demonstrated that the normalized median test yields a more or less ‘universal’ probability density function for the residual and that a single threshold value can be applied to effectively detect spurious vectors. The generality of the proposed method is verified by the application to a large variety of documented flow cases with values of the Reynolds number ranging from 10−1 to 107.

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Laboratory for Aero and HydrodynamicsDelft University of TechnologyDelftThe Netherlands
  2. 2.Department of Aerospace EngineeringDelft University of TechnologyDelftThe Netherlands

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