Strange. If I download this submission, I get a txt file, which contains a C++ function, but without a Mex-interface. It looks like it would smooth an image, which must be delivered as INT***. The function cannot be compiled, because the subfunction CreateImageMatrix is not included. I looks like the submission at 07 Apr 2008 was destroyed by an accident.
This function cannot be compiled or used, especially not in Matlab. But inspite of this, 500 people download it per month without leaving a rating or comment. Strange, as said already.