In Robert Argyle's book on amateur astronomy, there is a chapter on speckle interferometry for the amateur. In that chapter, the reader is referred to this web page for information on how to get the software to calculate the directed vector autocorrelogram (DVA) using a Matrox Meteor video frame grabber board under Linux.
Well, the software has not been ported from the DOS code yet, so check back with this web site periodically for information on how things are going. If you need something, anything right now, try downloading and tinkering with the DOS version released in February of 1997.