Author(s): Song Huaping, Guo Xin, Li Jinchuan
Pages: 49-52
Year: 2013 Issue:  4
Journal: Urban Geotechnical Investigation & Surveying
Keyword:  modified seed filling algorithm; region filling; secondary development;
Abstract: The data conversion from topographic maps to GIS has a huge workload ,especially in the process of build-ing Poindirtize .According to a summary of the characteristics of this type of works and the theoretical basis of traditional Seed Filling Algorithm and Scan-Line Seed Filling Algorithm , this paper proposes a modified Seed Filling Algorithm which can realize searching and filling simultaneously and firstly filling then full row accessing the stack according to the direction .By comparing with traditional Seed Filling Algorithm ,simulation results show that the new algorithm has the a-bility to solve the problem of repeated accessing stack .What’s more,new algorithm can reduce the number of requiring stacks,and speed up the building(ground object filling) process.Finally,this paper uses Bentley MicroStation software platform secondary development tool to realize the fast library setting by modified Seed Filling Algorithm .