Patent ID: 8244456

Claim:
A data processing method of validating by a processor and correcting a track database based on the contents of a geological database, the method comprising: computing, by a data-processing system that is associated with said track database, a geo-location of a feature along a train track based on a geometric representation of said train track and an offset from a point on said train track to said feature, wherein said track database comprises said geometric representation and said offset; estimating, by said data-processing system, a first geo-location of a monument based on the geo-location of said feature; and when said estimated first geo-location of said monument differs by at least a threshold distance from a second geo-location of said monument in said geological database, adjusting, by said data-processing system, at least one of said geometric representation and said offset in said track database so that a re-computed estimate of said first geo-location of said monument is within said threshold distance, thereby correcting said track database based on said second geo-location of said monument in said geological database.