{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "An object of the present invention is to provide a map matching method capable of performing a process operation in a high speed. In the map matching method of the present invention, while employing road network data in which road networks are formed in a plurality of hierarchical layers \"a\", \"b\"…",
  "path": "/patents/1016321",
  "publishedAt": "2011-01-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/30",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "An object of the present invention is to provide a map matching method capable of performing a process operation in a high speed. In the map matching method of the present invention, while employing road network data in which road networks are formed in a plurality of hierarchical layers \"a\", \"b\", \"c\", and a road network of an upper-grade hierarchical layer is established by such a road network which is extracted from a road network having a lower-grade hierarchical layer lower than the road network having the upper-grade hierarchical layer, a road network of the uppermost-grade hierarchical layer \"a\" is matched with a shape vector indicative of a shape of a objective road in a beginning stage; and when such a candidate road which is matched with the shape vector cannot be obtained in the road network of the uppermost-grade hierarchical layer \"a\", since such a road network having another hierarchical layer \"b\", or \"c\" is matched with the shape vector, the objective road is identified. In the most cases, as to a objective road of traffic information and the like, the objective road can be identified by executing a map matching operation with employment of the road network having the uppermost-grade hierarchical layer \"a\", and the map matching operation can be carried out in a high speed.",
  "title": "Map matching method, map matching device, database for shape matching, and shape matching device"
}