Hany Farid
Darthmouth College
http://www.cs.dartmouth.edu/farid/
Thursday, April 27
3:10-4:00 p.m.
1065 Kemper
Digital Image Forensics
With the advent of high-resolution digital cameras, powerful personal computers and sophisticated photo-editing software, the manipulation of digital images is becoming more common. We are seeing the impact of these technologies in nearly every corner of our lives. As the technology that allows for digital media to be manipulated and distorted is developing at break-neck speeds, our understanding of the technological, ethical, and legal implications is lagging behind. I will discuss some of these issues and describe computational techniques which we have developed for detecting tampering in digital media. Operating in the absence of digital watermarks or signatures, these techniques quantify and detect statistical correlations that result from specific forms of digital tampering.
[joint work with: Kimo Johnson, Siwei Lyu, Alin Popescu, Weihong Wang and Jeff Woodward]