Smoking out photo hoaxes with software

Dartmouth College professor Hany Farid is no fan of Josef Stalin, but he acknowledges that the photo retouching done during the Soviet era was top notch.
“That was impressive work. I’ve seen some of the originals,” Farid said. The Soviets just didn’t airbrush their victims out, he added. They painted in new backgrounds on the negatives.
Farid’s interest in photo retouching isn’t just historical. The professor of computer science and applied mathematics runs the university’s Image Science Group, which has emerged as one of the chief research centers in the U.S. for developing software to detect manipulation in digital photographs.
Smoking out photo hoaxes with software | CNET News.com