Tracy Staedter at Discovery News reports that the June issue of IEEE Transactions on Information Security and Forensics contains a paper detailing how forensic scientists have mapped subtle pixel patterning so that an image can be matched to the digital camera that shot it. The paper was, written by Jessica Fridrich, associate professor of electrical and computer engineering at the State University of New York in Binghamton, along with her colleagues, Jan Lukas and Miroslav Goljan.
In laboratory experiments, Fridrich and her team were able to match several thousand different images to the correct camera without a single misclassification, even when images were compressed or resized.
"This is one of the first papers out there to have what I think is a realizable, robust and effect technique for doing it," said Hany Farid, associate professor of computer science at Dartmouth University and an expert in digital image forensics.
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