[NBLUG/talk] Searching for near-identical photos?

[Aaron G]

Lincoln Peters wrote:

>Anyone know of a program that could tell me if two photos are nearly 
>identical, even if they aren't 100% identical?  I ask because I'm working on 
>a large collection of photos for a group at SSU, and I suspect that it 
>contains several duplicates that differ only slightly (e.g. two copies of a 
>printed photo that were scanned at different times, perhaps with different 
>settings, or even with different scanners).
>
>I think that GNUift might be able to do this, but I've never been able to get 
>it to work.
>
>  
>
That seems like it would be EXTREAMLY hard for a computer to do...
The only way I could see it possibly working is that you had some kinda
metric for "probility the picture is a match" and you could define your
threshold.
This is the same kinda thing as teaching a computer to catch a baseball,
or catching it yourself.
Easy for you, hard for the computer. (read a book call On Intelligence
if your intrested in stuff like this)
good luck,
  -Aaron