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Experimental PIV data of a vortex pair (from Willert et al., see text for details). A) Raw PIV velocities. B) PIV velocities post-processed with the DCT-PLS. C) Residuals (velocities in A – velocities in B). D) Contour plots of the velocity magnitudes (solid lines: using the DCT-PLS, dashed lines: using the conventional method). The background represents the velocity magnitudes obtained with the DCT-PLS (Fig. 8B).
