1. Ahn, S., Ozawa, S.: Generating Facial Expressions Based on Estimation of Muscular Contraction Parameters From Facial Feature Points. In: IEEE International Conf. on Systems, Man, and Cybernetics, The Hague, Netherlands, October 10-13, vol. 1, pp. 660–665 (2004)
2. Zhang, Q., Liu, Z., Guo, B., Terzopoulos, D., Shum, H.Y.: Geometry-Driven Photorealistic Facial Expression Synthesis. IEEE Transactions on Visualization and Computer Graphics 12(1), 48–60 (2006)
3. Song, M., Tao, D., Liu, Z., Li, X., Zhou, M.: Image Ratio Features for Facial Expression Recognition Application. IEEE Transactions on Systems, Man, and Cybernetics – Part B: Cybernetics 40(3), 779–788 (2010)
4. Pentland, A., Moghaddam, B., Starner, T.: View-based and modular eigenspaces for face recognition. In: Proc. IEEE Conf. on Computer Vision and Pattern Recognition (CVPR 1994), Seattle, WA (1994)
5. Min Huang, W., Mariani, R.: Face detection and precise eyes location. In: Proc. Int. Conf. on Pattern Recognition, ICPR 2000 (2000)