Attached Link: http://www.andromedasoftware.com

Perhaps not preceisely what you have in mind, but I made these "dots" with just a few clicks, using the Andromeda Screens series 3 filters. There are *many* optional settings, so it's possible you can find the effect you're searching for in there. I think they have a demo version, so you could try it out first to be sure. :)