Image processing device, image processing method, and image display system

An image display system comprising:

• a camera that attaches to a vehicle and is capable of wide-angle capturing in a travelling direction of the vehicle;
• a controller configured to superimpose predetermined information on image captured by the camera;
• and
• a display configured to display the image captured by the camera and the predetermined information;
• wherein the controller is configured to perform control to detect input indicating a predetermined position on an input detector in the image displayed on the display, and wherein in a state of the display displaying image captured by the camera, when the input detector detects input indicating a predetermined position in the image, the controller performs control to superimpose information relating to a distance between the vehicle and the position indicated in the image captured by the camera, wherein the controller performs control to superimpose the information as a reference line connecting points in the image at a distance from the vehicle equivalent to a distance from the vehicle of the position indicated in the image captured by the camera, the controller determining the points based on distortion data associated with the camera, wherein
• the camera comprises a lens configured to capture a wide-angle in a traveling direction of the vehicle, and
• the distortion data is data which accounts for distortion in the image caused by the lens.