1. Ba, S.O., Odobez, J.M.: A rao-blackwellized mixed state particle filter for head pose tracking. In: ACM-ICMI Workshop on Multi-modal Multi-party Meeting Processing (MMMP), Trento Italy, pp. 9–16. ACM, New York (2005)
2. Brown, L., Tian, Y.: A study of coarse head pose estimation. In: IEEE Workshop on Motion and Video Computing (Dec. 2002)
3. Cootes, T., Kittipanya-ngam, P.: Comparing variations on the active appearance model algorithm. In: BMVC (2002)
4. Doucet, A., Godsill, S., Andrieu, C.: On sequential monte carlo sampling methods for bayesian filtering. In: Statistics and Computing (2000)
5. Lu, L., Zhang, Z., Shum, H., Liu, Z., Chen, H.: Model and exemplar-based robust head pose tracking under occlusion and varying expression. In: CVPR (Dec. 2001)