Haha is that maybe some homework that you have?

First, specify the processing, what kind of processing do we have to do to the image?

Either way I guess the steps needed are:

• store the image pixels in a RAM
• do some processing using a processing unit
• write the "output" to the same or another RAM or even some output device

Are you maybe talking about Shaders for a GPU?

I guess I need a better "description" of the problem, so that I can implement what exactly you want...which means:
What is it that you want me to implement?
:)