| 摘要 |
A technique for generating from a point set geometric data that continuously describe a course of a geographic object used in the context of generating data for a navigation device or driver assisted system is disclosed. The technique includes determining, from sub-sets of two or more road points, a sequence of primary base elements; determining an interconnecting secondary base element for adjacent primary base elements, that continuously connects to and at a connection point has the same gradient as each of the interconnected primary base elements; determining an interconnecting transition curve for adjacent primary and secondary base elements, that continuously connects to and at a connection point has the same gradient and the same curvature as each of the interconnected primary and secondary base elements; and determining geometric data that continuously describe a course of the geographic object from primary base elements, secondary base elements and transition curves. |
