| 摘要 |
PROBLEM TO BE SOLVED: To present adequate information easily visible for a user at the time of three-dimensionally displaying the facilities on a map. SOLUTION: Only the facilities near guide points in the facility information are selected by a display object selecting means 13. The facilities existing just before the guide point are decided as non-preferential display objects by an image attribute forming means 18 and are plotted by a three-dimensional image plotting means 16, by which only the necessary facilities are displayed. The important information, such as roads and traveling routes near the crossing points, is displayed so as not to be concealed by the facility information. |
