Patent ID: 9448074
Filing Date: 2016-09-20
CPC Classification: G01C,G09B

Claim Text:
1. A curve modeling device executed on a processor comprising: a curvature calculation unit calculating a curvature at each of a plurality of sampling points positioned on a route based on location information of each of the plurality of sampling points; a curvature correction unit correcting the curvature at each of the plurality of sampling points and approximating the route by a straight line interval, an arc interval, or a smooth curve interval, wherein the curvature to be corrected is calculated by the curvature calculation unit; and a node information generation unit building a shape model of a curve included in the route by generating node information indicative of a location of a node on a road corresponding to the route based on the corrected curvatures of the plurality of sampling points, wherein the curvature correction unit corrects the curvature at each of the plurality of sampling points under a condition that an orientation difference defined by the curvatures calculated by the curvature calculation unit maintains a constant value.