In a vehicle circumferential image providing device 1, an image converting unit 53 generates an overhead image 205 from images picked up with plural camera modules 10. An image detecting unit 54 performs edge detection in an overhead image 205. Further, the image detecting unit 54 determines continuity of edge lines connecting between connected parts in the overhead image 205, among the detected edge lines. When the edge lines striding over the connected parts in the overhead image 205 are discontinuous, the image detecting unit 54 sets edge lines at the far side of the own vehicle to match edge lines at the near side of the own vehicle, thereby setting the edge lines continuous at the connected parts.