Activity Recognition using Dynamic Bayesian Networks with Automatic State Selection

Applying advanced video technology to understand activity and intent is becoming increasingly important for intelligent video surveillance. We present a general model of a d-level dynamic Bayesian network to perform complex event recognition. The levels of the network are constrained to enforce state hierarchy while the dth level models the duration of simplest event. Moreover, in this paper we propose to use the deterministic annealing clustering method to automatically discover the states for the observable levels. We used real world data sets to show the effectiveness of our proposed method.