[Gimp-user] Photos negatives scanned into the gimp

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Author: Joao Moreira
Date:
To: gimp-user
Subject: [Gimp-user] Photos negatives scanned into the gimp

Hi,

I just took some photos negatives (memories from the pre-digital days
:-) and
put them on my flat bed scanner. So now I have a color image of these
negatives
in the gimp, so how do I go about turning them into a positive ?

I would expect this to be a very simple operation, like a subtraction,
on each
pixel, right ? does this exist ? is there a tool/filter that does this ?

Or do I need to code a plugin, and if so, what exactly is the operation
to be done
(in terms of RGB) ?

Thanks,
Joao

-- 
Joao Moreira de Sa Coutinho
joao.moreira@???

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