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Experiments in Fluids

, Volume 43, Issue 6, pp 859–872 | Cite as

Analysis of weighting windows for image deformation methods in PIV

  • T. AstaritaEmail author
Research Article

Abstract

The use of a weighting window (WW) in the evaluation of the cross-correlation coefficient and in the iterative procedure of image deformation method for particle image velocimetry (PIV) applications can be used to both stabilise the process and to increase the spatial resolution. The choice of the WW is a parameter that influences the complete PIV algorithm. Aim of this paper is to examine the influence of this aspect on both the accuracy and spatial resolution of the PIV algorithm. Results show an overall accordance between the theoretical approach and the simulation both with synthetic and real images. The choice of the combination of WW influences significantly the spatial resolution and accuracy of the PIV algorithm.

Keywords

Particle Image Velocimetry Modulation Transfer Function Interrogation Window High Spatial Frequency Synthetic Image 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.University of Naples Federico II, DETECNaplesItaly

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