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Spotting ’shopping

Agence France Presse is reported to be using software called Tungstene to spot manipulated photographs. The details are deeply technical, but it seems that the quirks of the mathematics used in compressing the JPEG picture format does give such software a very good chance of detecting manipulation (what has become known as "'shopping" unjustly taking in vain the name of a well-known piece of software.

Last modified: 16 May 2011 - © 2011 contributors
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