Faced with an increasing backlash against portrait retouching, researchers have crafted a program to quantify just how much the picture has been tweaked.
Retouching images is a fact of life for photographers, especially those doing portrait work. It can be as little as tweaking color and cropping down, but soon it evolves into fixing blemishes, whitening teeth, then resculpting noses and completely changing the way a body looks. There's been an increasing backlash against heavily editing models, especially women in advertising, for presenting young women with unrealistic body types. Some countries in Europe have pushed forward with legislation to ban retouching all-together.