tricky process we had to find an actor whose appearance harmonized well with all digital figure. when we insert our digital face over the actors we wanted to be the best possible match. and that proved to be quite challenging. for certain physical features of the act so we worked with was slightly different from the material we did most as a reference point. the next step was the most important one creating an authentic looking digital faith. for a viewer even a tiny unnatural looking movement can appear disconcerting or creepy. the research has developed animation software to help until recently digitally generated movements were always linear. but now muscle groups can be animated using complex non-linear motion which looks much more natural. so the motion of the lips is no