| 摘要 |
<p>An acquisition unit (101) acquires position information indicating a position of a moving body. A generation unit (102) generates information concerning a travel trace of the moving body containing the position indicated in the position information as history information. According to the history information and map information, a selection unit (103) calculates the position on a map corresponding to the position indicated by the position information and selects road data to which the position on the map belongs. A calculation unit (104) calculates a distance between the position indicated by the position information and the position on the map as an error of the road data selected by the selection unit (103).</p> |
