National 1:50,000 Database Updating

In order to keep the timeliness of the databases, National Administration of Surveying, Mapping and Geoinformation of China started to dynamically update the National 1:50,000 Fundamental Geographic Information Database since 2012.The main goals include updating and publishing national 1:50000 database covering the whole country once a year, and using the updated results to update the smaller scale databases at 1:250k or 1:100million. GEOWAY provided a set of database-driven updating solutions including image processing, updating by field surveying and generalization, database-driven cartography,quaility-check and database management.

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