Gpiv is a graphic user interface program using the gtk/gnome libraries for particle image velocimetry (piv). the program gives a quick overview of the parameter settings of the processes and allows to change them easy, running the processes, individually or in a chain, visualizes and displays the results. the processes that may be invoked by gpiv are:

image processing: typical image manipulations that might be needed for piv interrogation.

image interrogation, resulting into estimators of particle image displacements.

data validation to test on outliers, peak-locking effect and velocity gradients over the interrogation area's.

data post-processing: data manipulation, spatial and time scaling to obtain a velocity field from the piv data, calculation of spatial averages, vorticity and strain.

this is the parallelized version using message passing interface to be used on a (beowulf) cluster.