Public building intelligent monitoring system

The invention discloses a public building intelligent monitoring system. The intelligent monitoring system comprises a monitoring front end, a monitoring center, basic intelligent analysis, intelligent face recognition and a security and protection system, the monitoring front end comprises a camera system and an audio system; the monitoring center comprises a central control center, a sub-controlroom and a storage device, and the monitoring center enables the control center, the sub-control room and the monitoring front end in the monitoring system to be in signal communication through a network architecture. The basic intelligent analysis comprises modeling backgrounds and foregrounds, separating analysis targets or persons from the backgrounds, extracting and tracking foreground targets, and performing intelligent behavior analysis and application in combination with business logics; wherein the intelligent face recognition comprises front-end face camera collection, intelligent face recognition and client