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Detecting Video & Audio Tampering

Posted by Hemos on from the the-telltale-heart dept.

* * Beatles-Beatles writes "Dartmouth professor Hany Farid already devised software tools to detect when someone has tampered with digital photos. His next challenge: determining whether video or audio files have been retouched. "

6 of 39 comments (clear)

  1. Umm... by dduardo · · Score: 3, Funny

    How about just doing md5sum ?

  2. Re:No can do by ResidntGeek · · Score: 3, Funny

    You're right. It's too bad the Dartmouth professor didn't ask the ACs on slashdot about his work; they obviously know more about it than him.

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    ResidntGeek
  3. security through obscurity by TubeSteak · · Score: 3, Interesting
    Most likely, distribution will be limited: Photo editors, but not freelance photographers, at mainstream media outlets may get the software.

    "You do diminish the power the software if you make it completely, widely available," he said.
    Since they mention JPEG quantization tables as one of the main methods of identifying what program/camera a photograph came from... How hard would it be to replace the quant table with your own? Or even just tweak it enough that the program can't ID it.

    It just doesn't strike me as a terribly reliable way to ID a picture's origin. Might as well rely on the EXIF data.
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    [Fuck Beta]
    o0t!
  4. Simple. by Rob+T+Firefly · · Score: 4, Funny

    If Paris Hilton is fully dressed, seems fully aware of her surroundings, and/or is singing well, it's been tampered with.

    This formula can also be adapted to Lindsay Lohan, but hasn't been tested on Tara Reid or others yet.

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    Slashdot Burying Stories About Slashdot Media Owned
  5. Re:No can do by ResidntGeek · · Score: 2, Informative

    He said it was _more_ in the field of signals processing than acoustics, not that it had nothing to do with acoustics. And he was perfectly correct.

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    ResidntGeek
  6. Re:No can do by belmolis · · Score: 2, Informative

    MIT has an ocean acoustics program. That at least used to deal to a large extent with submarine detection, with lots of military research money available. MIT also has an acoustics and vibration lab. And Amar Bose, who may well have designed your loud speakers, taught acoustics at MIT until his retirement in 2000. I took his intro acoustics course many years ago. I think that he may still teach a course. He is still listed in the MIT directory.