  The need for an automatic lip-reading system is ever increasing. Infact,
today, extraction and reliable analysis of facial movements make up an
important part in many multimedia systems such as videoconference, low
communication systems, lip-reading systems. In addition, visual information is
imperative among people with special needs. We can imagine, for example, a
dependent person ordering a machine with an easy lip movement or by a simple
syllable pronunciation. Moreover, people with hearing problems compensate for
their special needs by lip-reading as well as listening to the person with
whome they are talking.
