Kuwahara Filter Implementation

Kuwahara filter implementation for coloured images.

The pseudo-code/java applet referred to for the implementation can be found here:
http://www.cse.ust.hk/learning_objects/imageprocessing/kuwahara/kuwahara.html

Code example:
I = imread('peppers.png');
I_f = kuwahara_filter(I);
imshow(I_f);