Kuwahara filter help

[housee]

http://www.mathworks.fr/matlabcentral/fileexchange/loadFile.do?objectId=15027&objectType=FILE

Here is kuwahara filter code.
I can't start this function as is said :
filtered = Kuwahara(original,5);

It's always drop me out error:
??? Undefined function or variable 'original'.[/color red]

I tryed 3 differend file types : tiff , jpg, png.
Do anyone can check and tell me if it's because of my old version of matlab 7
or just there is something i don't understand in running this program.

 

[VisiGoth]

This question is about the varioable "original", not about the function. Can you post information about your variable. Did you really mean the string variable 'original.tif' or something like that?