CASSANDRA: audio-video sensor fusion for aggression detection

This paper presents a smart surveillance system named CASSANDRA, aimed at detecting instances of aggressive human behavior in public environments. A distinguishing aspect of CASSANDRA is the exploitation of the complimentary nature of audio and video sensing to disambiguate scene activity in real-life, noisy and dynamic environments. At the lower level, independent analysis of the audio and video streams yields intermediate descriptors of a scene like: ”scream”, ”passing train” or ”articulation energy”. At the higher level, a Dynamic Bayesian Network is used as a fusion mechanism that produces an aggregate aggression indication for the current scene. Our prototype system is validated on a set of scenarios performed by professional actors at an actual train station to ensure a realistic audio and video noise setting.

• Type: Conference
• Year: 2007
• Where: AVSS
• Authors: Wojtek Zajdel, Johannes D. Krijnders, Tjeerd C. Andringa, Dariu M. Gavrila
• Keywords: Aggregate Aggression Indication, Aggressive Human Behavior, AVSS 2007, Signal Processing, Yields Intermediate Descriptors