Re: Detecting If a Photo Has Been Edited -- How?
- From: "Mark" <NoSpam@xxxxxxxxxx>
- Date: Sun, 31 Jul 2005 14:12:40 +1200
What about if the modified timestamp on a JPEG was significantly later than
the time the photo was taken (which is stored within the JPEG)? Of course,
its very easy to change the modified timestamp on a file in Windows (any
many OSs).
Mark.
"Ken Hall" <kenhall2REMOVE@xxxxxxxxxxxxxx> wrote in message
news:krjne1dtqppqsvltch0i3a5rlih3ddip97@xxxxxxxxxx
> Let me start by saying I do not intend to enter any of these contests,
> much less violate their rules -- I'm just curious as to how they
> enforce them.
>
> It you read the rules for this photo contest website you will see they
> prohibit many image editing techniques.
> http://www.dpchallenge.com/challenge_rules.php
>
> My question is, how do they know? How would they know if I enhanced
> the image using various Photoshop techniques?
>
> For example, "spot editing" is prohibited in one of their contest
> classes. How would they know if I darkened or lightened a selected
> area if it is done so it's not obvious when viewing the image? This
> is but one example of many I can think of.
>
> Ken
.
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