Abstract: A server includes a feature point position estimation section that estimates positions of feature points of a plurality of respective input maps if a position correction section has failed in position correction for an input map, an accumulated data generation section that accumulates the positions of the feature points of the plurality of respective input maps to generate accumulated data, a convergence determination section that determines whether the positions of the feature points have converged based on the accumulated data, a difference data generation section that generates, if it is determined that the positions of the feature points have converged, difference data from the positions of the feature points that have converged, and a difference data reflection section that reflects the difference data in the reference map to update the reference map.

Abstract: A map processing system includes a feature quantity calculating section configured to calculate a feature quantity of a feature point included in a map, an integrated feature point generating section configured to integrate a plurality of feature points to generate an integrated feature point, an integrated feature point matching section configured to match integrated feature points between a plurality of maps, a feature point matching section configured to match individual feature points between the plurality of maps, and a map processing section configured to process a map based on a matching result of the integrated feature points and a matching result of the individual feature points.

Abstract: A map update device is configured to: generate an integrated map based on a plurality of input maps, each of the plurality of input maps including a probe data element assigned with a reliability; determine a reliability of the generated integrated map; update a reference map by reflecting a difference between the reference map and the integrated map when the determined reliability of the integrated map is equal to or higher than a first predetermined level; store, as one of accumulated data elements, the integrated map when the determined reliability of the integrated map is lower than the first predetermined level and equal to or higher than a second predetermined level, the second predetermined level being set to be lower than the first predetermined level; update the integrated map based on the accumulated data elements; and determine the reliability of the updated integrated map.

Abstract: A server includes a feature point position estimation section that estimates positions of feature points of a plurality of respective input maps if a position correction section has failed in position correction for an input map, an accumulated data generation section that accumulates the positions of the feature points of the plurality of respective input maps to generate accumulated data, a convergence determination section that determines whether the positions of the feature points have converged based on the accumulated data, a difference data generation section that generates, if it is determined that the positions of the feature points have converged, difference data from the positions of the feature points that have converged, and a difference data reflection section that reflects the difference data in the reference map to update the reference map.