A. Using Numerical Map
To implement the proposed service, street data needs to
be extracted from the numeric map. Street data is essentially
GPS coordinate representation street lines and border lines.
Using a numeric map application program [10], only the
property of streets can be extracted. The extracted street data
is abstracted to vertices and edges and a traveling path
algorithm is applied to find the traveling path. Then the
implemented model uses the path as its own street data input.
Fig. 14 shows the street data of Aenigol extracted from the
numeric map.
Automatically extracted street data consists of two data
tables. One table lists the index and coordinates of each fork
and dead-end. This data is obtained by parsing the vertex
points in the automatically extracted street data. The other
table lists the links between forks, distance, and detailed
coordinates. By using this data, it is possible to identify the
traveling path between the user and the street point that the
regional data element is close to.