Experiments in Fluids

, Volume 39, Issue 6, pp 1096–1100 | Cite as

Universal outlier detection for PIV data

Letter

Abstract

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.

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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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