Submission + - Digital noise in photos gives away edits (albany.edu)
ClarkMills writes: Here's a neat paper outlining the detection of digital photographs by detecting and comparing the noise across the image. There's more information at (the humorously named site) http://www.dpreview.com/news/2012/07/09/Research-uses-noise-patterns-to-detect-manipulated-images It will be interesting to run this tech across previous "winner" images. :)