Crime prevention device and crime prevention method

A pedestrian detection unit (232) receives a captured image transmitted from a vehicle (40), and detects a pedestrian (60) from the captured image. A pedestrian attribute estimation unit (233) estimates the attribute of the pedestrian (60) on the basis of the captured image. A pedestrian travel area estimation unit (234) estimates, on the basis of the captured image, a pedestrian travel area (A) in which a pedestrian (60) travels. A vehicle travel amount calculation unit (235) calculates a vehicle travel amount within a pedestrian travel area (A). A risk level calculation unit (236) calculates a risk level at which the pedestrian (60) is involved in a crime, on the basis of the attribute of the pedestrian (60) and the amount of vehicle travel in the pedestrian travel area (A). When the degree of risk is higher than a preset threshold value, a patrol command unit (237) transmits, to the moving body (50), a patrol command instructing to patrol the pedestrian travel area (A). 行人检测部(232)接收从车辆(40)发送的拍摄图像，并从拍摄图像中检测