Massimiliano Albanese, Rama Chellappa, Naresh P. Cuntoor, Vincenzo Moscato, Antonio Picariello, V. S. Subrahmanian, Octavian Udrea. A Constrained Probabilistic Petri Net Framework for Human Activity Detection in Video. IEEE Transactions on Multimedia, 10(6):982-996, 2008. [doi]
Abstract is missing.