by Hany Farid, Associate Professor at Dartmouth
Photography, of course, lost its innocence many years ago. In as early as the 1920s, shortly after the first commercially available camera was introduced, Stalin had his enemies "air-brushed" out of photographs. With the advent of high-resolution digital cameras, powerful personal computers and sophisticated photo-editing software, the manipulation of digital images is becoming more common. Here, I have collected some examples of digital tampering in the media, politics, and the law. To help contend with the implications of this tampering, we have developed a series of tools for detecting traces of tampering in digital images.
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