2pm Wednesday, 2 February 2005:

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Statistics of Natural Images and Their Applications to Digital Forensics
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Siwei Lyu <BR>
Dartmouth College
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We describe a set of natural image statistics that are built upon a
multi-scale multi-orientation image decomposition (e.g., wavelets).
This set consists of first and higher-order statistics that capture
certain regularities of natural images.  I will show how these
statistics can be useful in several digital forensic applications,
including differentiating between photographic and photorealistic
images, and detecting hidden messages embedded within digital images.