【摘要】 介绍了用VB在AutoCAD上开发的一个地形图矢量化系统。该系统在细化图像后自动进行线划跟踪,分离点状地物和线状地物并分别矢量化,直接生成DWG和DXF文件。实验结果表明了该系统具有一定的可行性,也适用于其他工程图的矢量化,且便于CAD用户根据需要自行开发图层和图形符号。更多还原

【Abstract】 In this paper, a vectorization system for topographic maps developed through VB on AutoCAD is introduced. In this system, the raster has been thinned and lines are traced automatically. Point and line features are separated and vectorized respectively. Files with the extension name of DWG or DXF are (produced). Experimental results indicate that this system is feasible, suitable for vectorizing other (engineering) maps and convenient for CAD users to develop map layers and graphical symbols.更多还原