Left item monitoring device, left item monitoring system including the same, and left item monitoring method

摘要

An alarm issuing time according to the degree of suspiciousness or danger of an unattended object is controlled. Unattended object monitoring apparatus is configured to include image acquisition unit that acquires a captured image of an monitoring area imaged by imaging apparatus, object tracker that detects an object appearing in the monitoring area from the captured image and tracks between the captured images for each detected object, unattended object detector that detects an object not displaced beyond a predetermined time as an unattended object based on a tracking result for each detected object by the object tracker, unattended object type determination unit that determines a type of the detected unattended object, alarm issuing time controller that controls an alarm issuing time from the time when an unattended object is detected to the time when an alarm is issued based on the determined type of the unattended object.