Electronic map data manufacturing and updating method and apparatus

Abstract

The present invention discloses an electronic map data manufacturing and updating method and apparatus, to reduce processing time of electronic map update and improve efficiency of the electronic map update. The electronic map data manufacturing method comprises: for a map element in an electronic map, generating a feature identifier of the map element according to location information of the map element; and establishing a correspondence between the map element and the corresponding feature identifier. The electronic map updating method comprises: for a same type of map elements in an electronic map, comparing feature identifiers corresponding to this type of map elements in a to-be-updated target data table and a source data table that provides an update data source, to obtain a changed map element; separately determining a change type of the changed map element in a data table to which the map element belongs; and updating the target data table according to the determined change type of the map element in the data table to which the map element belongs.

Description

technical field [0001] The invention relates to the technical field of updating electronic maps, in particular to a method and device for creating and updating electronic map data. Background technique [0002] The wide application of satellite positioning technology and mobile Internet technology has promoted the development of electronic map navigation service and location service related industries. At present, the navigation software is developing in the direction of intelligence, convenience, and personalization, and the accuracy of the electronic map information used by the navigation software directly affects the accuracy of the navigation results. In order to ensure the accuracy of the electronic map, the electronic map provider shall provide a new version of the electronic map once every three months or half a year or once a year. [0003] The electronic map contains a variety of map elements. Updating the electronic map means updating different map elements. The m...

AI Technical Summary

Problems solved by technology

[0009] In the above method of updating POI and Link, because of the comparison of all shape points, especially for Link, since Link contains many shape points, even if Link does not change, it is necessary to compare all shape points It can only be determined, which increases the time spent on updating the electronic map and reduces the efficiency of updating the electronic map

Even if the electronic map is divided into tiles, it does not improve the update efficiency of the electronic map

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