Frank,

If your images are 1 bit/pixel then they are a managable 24K. If they are 8 bit/pixel then we have ~200K a bit more challenging.
If they have even greater pixel depth then...

This site reference C++ compilers by Ceibo and Keil. Perhaps folks on this site can provide info on there suitability. The lack of numeric support on all but a few '51 variants does argue for an embedded PC platform. You code would directly port.

The platform suitability would also be impacted by whether this is a "one of" or a product, the file size, the ammount of time required for image processing.

regards,
p