ADISL’s Image Apprentice is a C/C++ based Image Processing Learner’s Toolkit. Students use it as a companion to their favourite Image Processing Textbook. It allows you to use your self-written image processing algorithms as plugins.

It comes with a Plugin Development Kit (PDK) that has a skeleton code having a simple coding style. A student who has attended a 101-level course in C/C++ programming is well-equipped to write an Image Processing plugin for Image Apprentice using Visual C++.

NOTE for returning users: 

Google Page Creator has shut down (read FAQ) and has made certain policy changes. So I am shifting the source code of the FFTW based Plugin, CFFTWWrapper to a new page:

http://code.google.com/p/cfftwwrapper/ 

This is susceptible to further changes as this was an emergency measure. Inconvenience is regretted.