That the fashion world employs a bit of photo-trickery to ensure models look their best is no secret.
Flip through any fashion magazine, and you're bombarded with pictures of Amazonian celebrities with endless legs, flawless skin, and not a wrinkle in sight.
But health organizations have warned that such digital enhancement promotes unrealistic expectations of body image, especially among young girls.
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Now two computer scientists have said that consumers should be told how much altering has been done on a particular image – and believe they have found a way of quantifying it to offer a universal "health warning" on magazine images.