Re: "evidence tampering"
Jessica Fridrich, the woman referred to in this wikipedia entry, is at the
forefront of research in the digital image forgery field (also solving
rubik's cube, which figures, I suppose)
----- Original Message -----
From: "Judy Seigel" <firstname.lastname@example.org>
Sent: Thursday, September 07, 2006 2:42 PM
Subject: "evidence tampering"
> On Tue, 5 Sep 2006, Camden Hardy wrote:
> > "...calls for works that specifically question the nature of visual
> > documentation, including its definition, potentials, semiotic systems,
> > social resonances in a Post-Modern world."
> > I interpret this as saying, "so photography has the ability to distort
> > truth...now what are we, as photographers, going to do about it?"
> A book on this topic was published about 7 years ago, I think by Frank
> Richie (or someone like that)... I have it around here somewhere, but it
> struck me as more or less re-laboring the obvious & only partially true,
> anyway. (Basically his point was that digital made trickery possible, but
> IMO, as noted, 'twas ever thus, just not so easy.)
> However I have a question. There was a fair amount of police chicanery
> with videotapes of arrests during the Republican National Convention in
> NYC in 2004 -- actually quite amusing, if police lies and evidence
> tampering strike one's funny bone. Independent videotapes were located
> that showed the deleted parts, as reported at several points by the NY
> Times. But then, sometime last year (I have the clip, just not in front of
> me) the Times mentioned, almost in passing, that something like 400 (FOUR
> HUNDRED !) police prosecutions had to be dropped because the tapes had
> been found to be "improperly edited." (I think Mark would add "heh heh
> I took that to mean, tampering had been detected again -- on the
> videotape. My question, which I figure some of the digital mavens around
> here would know, is, can you see by examining a jpeg (or digital camera
> file) if that's been altered as apparently you can with video?
> I would assume if it's been saved in a different format, editing would
> not be detectable. But if it were saved in the same jpeg format ????
> (Just wondering, not planning anything.)