1. A method of monitoring monitored locations by means of a monitoring system comprising a plurality of monitoring modules ( 1 ), each of which has a light-sensitive sensor, for monitoring the monitored locations, and a remote monitoring station ( 3 ) with an operator, comprising the steps of recording by each of the monitoring modules ( 1 ) an image ( 100 ) of the monitored location associated with the monitoring module, extracting ( 120 ) in each of the monitoring modules an area in the recorded image that differs from a reference image, extracting in each of the monitoring modules an object ( 140 ) from the area, classifying in each of the monitoring modules ( 1 ) the object based on characteristics, such as a characteristic of the type: size, shape and/or movement history, associated with the object, if the object is a human alarm object, transmitting, if the object is classified as a human alarm object, data representing the area in a stylized way to the monitoring station ( 3 ), and recreating said transmitted data in the monitoring station ( 3 ) and displaying the same to the operator for verification of the human alarm object.