Map display system and map display method
AssigneeMitsubishi Electric Corporation
InventorMasafumi Asai
Life of this patent
Estimating the term…
Abstract
Based on map information acquired from a map DB, a viewpoint for viewing a ground surface on a map of a set region at a time of displaying the map is set. Altitude information that indicates an altitude of a landform present in at least a partial region of the set region is stored. In a case where the altitude information is present in the map DB at a position on the map, which is set in response to a position indicated by inputted position information, a sight direction of the viewpoint is changed, and the viewpoint is thereby set at a position higher than the altitude of the landform, which is indicated by altitude information of the position on the map. A display data for displaying, on a display device, a map in a case of viewing the ground surface from the viewpoint set is generated.
Claims9
A map display system comprising:
- a processor to execute a program;
- and
- a memory to store the program which, when executed by the processor, results in performance of steps comprising,
- acquiring, from a map database, map information of a set region set in response to a position indicated by inputted position information,
- setting, based on said acquired map information, a viewpoint of viewing a ground surface on a map of said set region at a time of displaying said map, and
- generating display data for displaying, on a display device, a map of said set region in a case of viewing the ground surface from the viewpoint set in said setting, wherein
- said map database stores altitude information indicating an altitude of a landform present in at least a partial region of said set region, and
- in said setting:
- where said altitude information is present in said map database at a position on the map, the position being set in response to the position indicated by said inputted position information, a sight direction of said viewpoint is changed in view of the landform being at a higher altitude than the set viewpoint, and said viewpoint is thereby set at a position higher than the altitude of said landform, preventing an unnecessary image of the inside of the landform from being displayed, with the altitude being indicated by said altitude information at the position on said map.
A map display method comprising:
- acquiring, from a map database, map information of a set region set in response to a position indicated by inputted position information;
- setting, based on said acquired map information, a viewpoint of viewing a ground surface on a map of said set region at a time of displaying said map;
- and generating display data for displaying, on a display device, a map of said set region in a case of viewing the ground surface from said set viewpoint, wherein
- in said map database, altitude information indicating an altitude of a landform present in at least a partial region of said set region is stored, and
- where said altitude information is present in said map database at a position on the map, the position being set in response to the position indicated by said inputted position information, a sight direction of said viewpoint is changed in view of the landform being at a higher altitude than the set viewpoint, and said viewpoint is thereby set at a position higher than the altitude of said landform, preventing an unnecessary image of the inside of the landform from being displayed, with the altitude being indicated by said altitude information at the position on said map.
Dependencies are inferred from the claim text.