facial data stabilization



Concerning the way of stabilize the motion tracking of the head i am desesperaly looking for a tutorial or a script for maya 2011 on internet but no way to find it.
the purpose is to keep on maya only the motion of the face features with their proper relative translation without the translation of the head.

Please if someone have heard about a site, a tuto or a script on maya about this procedure, i will very appreciate some feedbacks. thanks for your reply.