This paper introduces making map methods of scanning vectorization, semi-digitalization and digitalization, and then data acquisition and establishing digital terrestrial model (DTM), and that special process to build correctly the contour.

• 介绍了采用扫描矢量化法、半数字化法成图、数字化成图法采集数据 ,建立大比例尺数字地面模型 (DTM) ,进而正确生成等高线的具体过程。