OCR for Arial font with Arduino Due or Teensy controllers

HI -

I, had done it on Matlab, but involved file porting from camera software to Matlab quite a time consuming exercise.

The suggestions were Arduino Mega fall short on execution capabilites.

Can I, have guidance if this is at all possible with Due or Teensy, is it possible to process the image, I'll be using a low resolution camera like 0.3MB(so that processing power required is less), and if there are any libraries already on the net?.