21 February 2013 Impeding forgers at photo inception
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Abstract
We describe a new concept for making photo tampering more difficult and time consuming, and for a given amount of time and effort, more amenable to detection. We record the camera preview and camera motion in the moments just prior to image capture. This information is packaged along with the full resolution image. To avoid detection, any subsequent manipulation of the image would have to be propagated to be consistent with this data - a decidedly difficult undertaking.
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Matthias Kirchner, Peter Winkler, Hany Farid, "Impeding forgers at photo inception", Proc. SPIE 8665, Media Watermarking, Security, and Forensics 2013, 866504 (21 February 2013); doi: 10.1117/12.2008412; https://doi.org/10.1117/12.2008412
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