Al-Qaeda's pixels popped?
There's nothing like a tiff between image processing experts to put a few extra pixels in your Monday.
Last week Wired.com ran a story in which a computer scientist claimed he could establish whether al-Qaeda had altered a video prior to posting it on the internet.
Neal Krawetz said he had written a program which would enable investigators to establish whether a background had been added to disguise the true location in which an al-Qaeda video was recorded, and, if the image had been altered, which editing software was used. (Of limited significance, perhaps, but interesting nonetheless.)
A video by a prominent al-Qaeda spokesman posted last year, had, for instance, had a desk, computer and some books added after the original recording, Mr Krawetz said.
A computer security expert at Cambridge University last week took issue with Mr Krawetz's claims, however, claiming that his analysis was flawed.
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