New Technique Analyzes Shadows to Spot Photo Fakes

A new algorithm can spot fake photos by looking for inconsistent shadows that are not always obvious to the naked eye. Nina Matthews Photography via Flickr, rights info The technique, which will be published in the journal ACM Transactions on Graphics in September, is the latest tool in the increasingly sophisticated arms race between digital forensics experts and those who manipulate photos or create fake tableaus for deceptive purposes. National security agencies, the media, scientific journal...