The frame grabber we used is an IC-RGB, from Imaging Technology. It performs an 8 bit digitalization of three standard composite video signals from the CCD cameras. It can be used to acquire simultaneously from two syncronized CCD cameras, for evaluating the intensity correlation function on two different planes, or to acquire from a single camera.
The syncronyzed acquisition from two cameras can be used to evaluate the three dimensional correlation function; the meaning of the three dimensional correlation function is explained in Appendix A.
The software for image elaboration was developed under Linux, written in C language. The drivers and the libraries are the ``IC-PCI'' provided by ``GOM Optical Measurements Techniques''. The algorithms used to process the images are described in Chapt. 5 and 6.