ERKENNUNG VON ÖRTLICHEN BEZIHUNGEN IN BILDERN

摘要

A three-dimensional graphic having a specific positional relationship with a predetermined point in an image made up of a three-dimensional graphic is detected. The image controller adds index information for identification to a plurality of three-dimensional graphics. The drawing device forms two-dimensional projected images by projecting the plurality of three-dimensional graphics onto predetermined planes. The two-dimensional projected images are assigned the index information corresponding to the index information assigned to the relevant three-dimensional graphics. When the projecting point(s) of a predetermined point in the image exist in the two-dimensional projected images, the graphics detector detects index information assigned to the two-dimensional projected images and detects the three-dimensional graphics assigned the index information corresponding to the detected index information.