Research of the method of point pattern recognition extraction in thematic map

Data acquisition and storage is an important step in the process in building GIS system. In the process of building a database, using the method of intelligent automatic vectorization is of great significance for reducing the workload of building a database and improving working efficiency. This paper presents a method of point pattern recognition based on interactive approach, that is to say, the way of creating punctuate ground feature on the grid thematic map and using the model to identify the same other model of punctuate background feature on the thematic map. Practice has proved that the algorithm in this paper can help the recognition rate reach 95% for the stable model thematic mapsand then improve the data collecting efficiency of pinctuate ground feature.