Patent attributes
Detection of a specific person with a specific person detecting system using surveillance cameras installed in various environments has not been successfully accurate. A monitoring system of the present invention includes an image pickup device capturing images, an updating type specified person detection server receiving captured images, extracting image feature quantities therefrom and storing image feature quantities and provisional person information of unspecified persons and the reliability thereof in real time, and a monitor station with an image searching function capable of searching an image afterward, which are connected via a network. The updating type specified person detection server adds the person information to a specified person list during system operation on the basis of an unspecified person list that is updated.