Behavioral profiling in CCTV cameras by combining multiple subtle suspicious observations of different surveillance operators
Henri Bouma, Jack Vogels, O.A.J. Aarts, Chris Kruszynski, Remco Wijn, Gertjan J. Burghouts · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2013
Camera surveillance and recognition of deviant behavior is important for the prevention of criminal incidents. A single observation of subtle deviant behavior of an individual may sometimes be insufficient to merit a follow-up action. Therefore, we propose a method that can combine multiple weak observations to make a strong indication that an intervention is required. We analyze the effectiveness of combining multiple observations/tags of different operators, the effects of the tagging instruction these operators received (many tags for weak signals or few tags for strong signals), and the performance of using a semi-automatic system for combining the different observations. The results show that the method can be used to increase hits (detecting criminals) whilst reducing false alarms (bothering innocent passers-by).