Change point detection device and map information distribution system

Abstract

A change point detection device includes a memorythat stores map information representing a structure associated with a traveling condition on and around a road, an object detection unitthat detects a shielding objecthiding the structure from an image acquired by an in-vehicle cameramounted on a vehicleand representing an environment around the vehicle, a collation unitthat eliminates the structure hidden by the shielding objectin the map information, collates the image with the map information, and calculates a coincidence degree between the image and the map information, and a change point detection unitthat determines, when the coincidence degree is less than or equal to a predetermined threshold value, that the structure represented in the image has a change point different from the corresponding structure represented in the map information.