StreamPix support various cameras that include PIV functionality.
Double exposure feature is fully supported with for instance Imperx cameras. Those fast digital cameras using CCD sensor were developed so that they can capture two frames at high speed with a few hundred ns difference between the frames.
Thanks to StreamPix various naming scheme when saving or exporting images, PIV images can be identified with clear reading file name.
Data for instantaneous velocity vector calculation can eventually be extracted using StreamPix Point to Point measurement module.
Example of PIV measurement with CCD camera (courtesy of www.mai.ru)