16-11-2008, 10:58 PM
I thought you'd might appreciate that Jack. Their techniques are very computer intensive and not for amateurs, but I think they may well be the types who'd be able to do the work on important photos pro bono, just as an academic exercise, and being good citizens. The article was in the June, 08 Scientific American. The upshot of it was that the new software available can create fakes that fool the eye, but not another computer - with the right analysis software. They also, in their article, mentioned a few things that can be seen as fakes with the 'naked eye', if you know what to look for. Two I remember were light source differences and eye reflection angles. There were others. More importantly they claim that a jpeg or tiff file do contain proof of forgery, but only a special program they specialize in can find that evidence. It is an increasingly important issue and may well apply to digitized images of originally optical/film images, as well.