Fuente: Wipo "Sensorization" A monitoring system monitors a region. When an event that needs to be presented to a user occurs in the region, the event is presented to the user. State history data associated with event detection states of one or more multi-sensor cameras is generated on the basis of a state change notification received from one or more multi-sensor cameras. A determination as to whether or not a currently occurring event should be notified to the user is made on the basis of a notification-unnecessary event table. If the event is determined as needing to be notified to the user, the event is presented on a presentation unit. The user is allowed to input, via a user input unit, an evaluation on the presented event. Further event detection is performed based on the evaluation made by the user.