I found the link to this video in Forensic Photoshop by Jim Hoerricks. Great video featuring Dr. Hany Farid on authenticating images. It’s a little over an hour long but very worth your time. Some of the math reminds me of my days in Collision Reconstruction 🙂
From the YouTube Post: Dr. Hany Farid, a distinguished professor at Dartmouth College and the “father” of digital image forensics, is an expert on authenticating images. His most famous analysis: a photograph of Lee Harvey Oswald holding a rifle and newspaper. Dr Farid concluded the photo was not altered. In this NIST Colloquium Series presentation, he discusses the impact that camera manipulation and alteration have caused.