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GRASP Seminar: Hany Farid, Dartmouth College, “Exposing Digital Forgeries from Inconsistencies in Lighting”

February 2, 2007 @ 12:00 pm - 1:00 pm

Abstract: 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. To this end, we have been developing a suite of tools to detect tampering in digital images. I will discuss two related techniques for exposing forgeries from inconsistencies in lighting. In each case we show how to estimate the direction to a light source from only a single image: inconsistencies across the image are then used as evidence of tampering. (joint work with Kimo Johnson)


Hany Farid received his undergraduate degree in Computer Science and Applied Mathematics from the University of Rochester in 1989, and his Ph.D. in Computer Science from the University of Pennsylvania in 1997. Following a two-year post-doctoral position in Brain and Cognitive Sciences at MIT, he joined the Dartmouth faculty in 1999 and is currently a Professor of Computer Science and Associate Chair there. Hany’s research interests include digital media at the crossroads of computer science, engineering, mathematics, optics, and psychology.


February 2, 2007
12:00 pm - 1:00 pm
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