Parking assistance and parking aid

A navigation apparatus includes a controller 3, an image data input unit, the image data can record from a vehicle-installed camera, and an image memory to store the image data. The navigation apparatus also includes an image processing unit that is adapted to generate data converged by extracted data is converted with respect to the viewpoint. The image processing unit stores the converted data in the image memory together with position data indicative of the position at which the image has been recorded. Using a plurality of converted data, the image processing unit generates bird's eye view data representing a bird's eye image of a closed area around the current vehicle position. When the controller determines that the parking operation is stopped, the image processing unit displays the bird's-eye view data and make a mark on a display indicating the current vehicle position.