Some people consider that internet is a kind of virtual world. It is possible to change things in characters when you are on the web: on match.com men will say being taller and girls being thinner. People will pretend higher income than real, doing more sport and so on. And since a few months people have got the opportunity to cheat on their photos. With tools like Photoshop idealized images are no longer a privilege for the stars in People, Star and and OK.
But moving forward cheating will no longer be a synonym of winning. Scholars from Dartmouth College in Hanover have developed a tool which detects the retouched items in a photograph. They describe a quantitative and perceptually meaningful metric of photo retouching. Reliable at 80%, the program explores eight different criteria to determine if changes were made to the colors (tan), shape (curves) or the texture (skin without imperfection) snapshots. Photographs are rated on the degree to which they have been digitally altered by explicitly modeling and estimating geometric and photometric changes. This perceptual metric for photo retouching correlates well with perceptual judgments of photo retouching and can be used to objectively judge by how much a retouched photo has strayed from reality.
The two researchers responsible for this tool (Hany Farid and Eric Kee) say they were motivated in their work by the social problems linked to a constant deformation of the body and the reality in the media.
So what will the next step be? An undetectable Photoshop preventing the Dartmouth College tool to track the retouches? A kind of anti-radar?
http://www.cs.dartmouth.edu/farid/downloads/publications/pnas11/
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