Method and system for map matching of road sign observations

摘要

A method, system, and computer program product is provided, for example, for matching a road sign observation information on a map application. The method may include receiving the road sign observation information. The method may further include identifying a plurality of candidate links based on a first distance between a location of the road sign observation information detection and a plurality of shape points. Additionally, the method may include calculating a heading difference between each of the plurality of candidate links and the location of the road sign observation information detection. Furthermore, the method may include identifying one or more qualified links from the plurality of candidate links, wherein the heading difference between each of the one or more qualified links from the plurality of candidate links and the location of the road sign observation information detection is within a predetermined heading difference threshold. Also, the method may include matching the road sign observation information to at least one of the one or more qualified links based on a second distance. Finally, the method may include changing the map-matched link from the candidate link to its downstream link if the road sign is too close to the end of the map-matched candidate link.