It looks as if DarbeeVision uses some form of advanced image stacking to do their defocus and subtract to get the depth information. I looked up their US patent # 7043074 and they do have very interesting IP that applies to using image pairs, multiplets. One of their accepted claims even covers aligned image pairs (wouldn't this be the unsharp mask?). I have to go deeper into the image processing functions, though the perceptor does a really good job of finding the image detail. This entire package looks very good! I am very curious how they are able to quickly synthesize a stereo pair, this is usually very labor intensive.http://dvnphoto.com/downloads
