Modification of Hartley transformation for PIV

Abstract

The presented work shows results of study of influence of recorded data quality when measuring by mean of Particle Image Velocimetry method on accuracy of evaluation of signal displacement. In the last ten years, special consideration has been given to the measurement accuracy of the Particle Image Velocimetry method. The work explores main aspects affecting the measurement accuracy of the Particle Image Velocimetry method with a focus on Standard Cross Correlation and Robust Phase Correlation method. The aim of this work is the verify possibility of using Hartley transformation instead of classical FFT transformation. The whole procedure measurement uncertainty is based on the analysis of synthetic data and the use of a Uniform Flow Test.