automated color inversion of a jpg?

[G0meZ]

i need some pic to be inverted every time it is refreshed (downloaded from the web)...say every 10min.
ideally, that script, an applescript or whatever can be invoked from a perl script with the full filename of the pic as argument... a workaround would probably be possible for this, though.
any ideas how to do this?
thank you.

 

[TheReef]

This probably belongs in the programming forum.

You could do it all in PERL, or c/c++.
This may help:

http://stackoverflow.com/questions/5439075/custom-color-inversion-algorithm-with-imagemagick-perl