Method for verifying the accuracy of an electronic map using an irregular unit object verification algorism

摘要

A method for automatically verifying the accuracy of an electronic map by an algorism which is adapted to verify irregular unit objects on the electronic map, thereby reducing the verification time and costs while obtaining improved verification accuracy. The method includes the steps of calculating a desired number of unit straight lines to be included in a broken line, overlapping an image, which is indicative of raster data transformed from vector data obtained based on original raster data of an original map, with an image indicative of the original raster data, thereby calculating the number of overlapping unit straight lines, and verifying the accuracy of the electronic map, based on the calculated results along with desired limitations associated with those results.