System and analysis used for a dynamic facial speech deformation model

While facial expressions and phoneme states are analyzed and published very well, the dynamic deformation of a face is rarely described or modeled. Recently dynamic facial expressions are analyzed. We describe a capture system, processing steps and analysis results useful for modeling facial deformations while speaking. The capture system consists of a double mirror construction and a high speed camera, in order to get fluid motion. Not only major face features as well as a high accuracy of the tracked facial points, are required for such analysis. The dynamic analysis results demonstrate the potential of a reduced phoneme alphabet, because of similar 3D shape deformations. The separation of asymmetric facial motion allows to setup a personalized deformation model, besides the common symmetric deformation.