Hi,

there is at least one paper on it that I found using the google search engine :

http://ijcsi.org/papers/IJCSI-9-2-1-161-170.pdf

Perhaps you could read that paper, and then ask more specific questions :)

edit: this tutorial looks pretty full on and is by a total variation preacher.

http://hal.archives-ouvertes.fr/docs/00/43/75/81/PDF/preprint.pdf