1. Gratch, J., Rickel, J., Andre, E., Cassell, J., Petajan, E., Badler, N.: Creating interactive virtual humans: some assembly required. IEEE Intelligent Systems 17, 54–63 (2002)
2. Choi, C., Aizawa, K., Harashima, H., Takebe, T.: Analysis and synthesis of facial image sequences in model-based image coding. IEEE Trans. CSVT 4, 257–275 (1994)
3. Breen, D., Lin, M.: Vision-based control of 3D facial animation. In: SCA, pp. 193–206 (2003)
4. Noh, J., Neumann, U.: Expression cloning. SIGGRAPH 1, 277–288 (2001)
5. Keeve, E., Girod, S., Kikinis, R., Girod, B.: Deformable modeling of facial tissue for craniofacial surgery simulation. Computer Aided Surgery 3, 223–228 (1998)