MAP DATA CONVERSION DEVICE AND METHOD

摘要

PROBLEM TO BE SOLVED: To convert into map data for improved mapping even if the map data that has a low coordinate resolution and stores a road shape in mesh units is used to map matching processing. SOLUTION: Map data before conversion has a low coordinate resolution and stores a road shape in mesh units. A device selects a link where either the start terminal node or the end terminal node of the link is on the boundary of the mesh (steps S10-S12). When the length of the selected link is equal to or less than a threshold L, a node that is connected to a node that is not located on the mesh boundary is connected to a node that is located on the mesh boundary (step S14), and a node that is not located on the mesh boundary is deleted from the map data (step S15).