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"The fascinating field of digital forensics couldn't be more relevant for a journalist, researcher or editor. Specialised analysts can test the authenticity of a photograph: how many times has it been saved? Have additions been made to the original, and if so, in which order? Are parts of the image generated by a computer? Professor Hany Farid, based at the Department of Computer Science at Dartmouth College in the US, explains that photo forensics refers to mathematical and computational techniques "that seek to determine if a photo has been altered from its time of recording, and how/where the photo was altered. "This field of study is highly technical, and while some simple analysis can be done without much technical training, most of the forensic techniques require a highly skilled practitioner.""

Restoring Trust in Photojournalism: Black Star Rising Talks with Dr. Hany Farid By Scott BaradellscottbaradellcloseAuthor: Scott Baradell See Author's Posts (125) Recent Posts * Sometimes, Improvisation Is Not All It's Cracked Up to Be * Dealing with Fragile Artist Syndrome * Fake Chuck Westfall Gets Under Canon's Skin * Newspapers Are Running Out of Time to Solve the Problem of Content Theft * Stock Photography's Hidden Costs -- and How to Avoid Them Scott Baradell edits and contributes to Black Star Rising. A former newspaper journalist and executive for Belo Corp., Scott is an accomplished brand strategist who leads the Idea Grove agency. He has nearly two decades of experience working closely with professional photographers, both as a journalist and as a corporate photography buyer. in Photojournalism on August 6th, 2007 Photographers have been manipulating images ever since Abraham Lincoln's head was attached to John C. Calhoun's body in one of Lincoln's most famous portraits. But today, digital technology has made tampering easier and more pervasive than ever. Some believe the trend threatens the public's fundamental faith in the practice of photojournalism. In this context, Dr. Hany Farid should be a hero to photojournalists and lovers of photojournalism. Farid, who runs the Image Science Group at Dartmouth College, has emerged as a leading authority on digital forensics. His team has developed some of the most advanced software currently available to detect photo manipulation. While media organizations - increasingly rocked by photo-doctoring scandals - have not yet invested in Farid's technology, it seems only a matter of time before this occurs. Here's our Q&A with Farid:

The Admissibility of Digital Photographs in Criminal Cases By David P. Nagosky