SHELF MONITORING DEVICE, SHELF MONITORING METHOD, AND SHELF MONITORING PROGRAM

A shelf monitoring device may be provided with a detector, a setter, a monitoring section, and an output section. The detector detects shelf labels attached to a display shelve to correspond to articles to be displayed on the display shelves, with video recognition of video data that includes the display shelves. Based on the position of the detected shelf label, the setter sets a monitoring area in which articles to be displayed on the display shelves in video data. The monitoring section monitors the shelving condition of the articles on the display shelves based on a change in video in response to the presence or absence of the article in the monitoring area. The output unit outputs the monitoring results according to the monitoring unit.