|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 21 인용 특허 : 4|
In a method for obtaining a three-dimensional map representation for a navigation system from two-dimensional road map data, road segments to be represented are linked with the aid of three-dimensional topological data. The navigation system has a conversion unit for converting the two-dimensional road map data and the three-dimensional road topological data into a three-dimensional map representation.
1. A method for obtaining a three-dimensional map representation for a navigation system, which comprises: providing a road map database containing two-dimensional map data having a network of road segments represented by points; interconnecting the road segments by nodes and assigning geocoordinates to the nodes; providing a separate geotopology database containing three-dimensional topological data; linking the road segments to be represented with the separate geotopology database; generating display data by determining associated points of the ...