Patent ID: 9080888
Filing Date: 2015-07-14
Classification: G01C

Abstract:
1. A method of generating from a point set geometric data that continuously describe a course of a geographic object, the method comprising: determining by a processor, from sub-sets of two or more points, a sequence of two or more primary base elements; determining, by the processor, for adjacent primary base elements, an interconnecting secondary base element that continuously connects to and at a connection point has the same gradient as each of the interconnected primary base element; determining, by the processor, for adjacent primary and secondary base elements, an interconnecting transition curve 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 element; determining, by the processor, geometric data that continuously describe a course of the geographic object from the primary base elements, the secondary base element and the transition curve; and generating a database from the geometric data, including storing the determined geometric data in a storage device, for use in the operation of a navigation device.