A method of regional recognition based on boundary nodes

Abstract

This method is to get the regional information of the target place based on boundary nodes of the regions. Firstly, the structure of regional data in the original map file was studied and each region can consists of a set of boundary nodes. The regional scope for searching nodes was designed into a belt shaped area in order to ensure valid searching work. Then, rules which indicate the implicit association within a region and its boundary nodes were made for further regional recognition. Finally, the threshold settings for the size of the searching regional scope were discussed to make the recognition efficient. Experimental results showed that the method is proved to be useful and effective in recognizing regions and acquiring regional information. It makes great sense to expand function of spatial querying in the GIS applications. © 2011 Springer-Verlag.