>> Face Tracking:
For a good interaction, the robot must have as much as possible
information about the people around itself.
Some more filters (shape, area, eye or mouth recognition) are implemented to erase errors.Finally the face tracking is used in two modes
:1) Give information to the main program to have good interactions
2) Give the position of one person to the eyes to make the robot "looking at someone" moving its eyes towards the person tracked.