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“Professor Hany Farid, a computer scientist at Dartmouth College in New Hampshire, and his PhD student Eric Kee, have been investigating photo retouching. They have developed a mathematical expression to quantify ballooning bosoms and winnowed waists. Their paper, published today in the Proceedings of the National Academy of Sciences, describes how they use mathematical models along with subjective human responses to produce a score of how radically a person’s image has been modified from an original photograph.”

[Economist, via Hamish Atkinson]