IMAGE DISPLAY DEVICE, AND IMAGE DISPLAY METHOD

In a driving assistance display device 1 including a wide-angle rear camera 11 and an ECU 20 and a display 30 that display a rear image captured by the wide-angle rear camera 11, a display control unit 25 of the ECU 20 and a display 30 display a rear image on left and right rear side screens 204 and a middle rear screen 202 by dividing the rear image, detect an object reflected in an image by checking the matching between the image and a predetermined pattern for the image of the middle rear screen 202, detect an object reflected in an image by analyzing the direction and speed of the point in the image moving with the passage of time for the images of the left and right rear side screens 204, and display a moving object approach detection frame 210 or a pedestrian detection frame 212 indicating the presence of the detected object. Therefore, a stationary person and the like near the front of a host vehicle 100 can be detected using a pattern matching method and a vehicle and the like approaching from the distant place on the lateral side of the host vehicle 100 can be detected using an optical flow method, and the driver can be notified of the presence of the detected vehicle, person, and the like.