【摘要】 为了对测绘数据进行及时、有效的更新与管理,需要将传统的纸图转化为数字化地图,扫描矢量化就成为数据采集与获取的一项主要途径.针对原始资料存在变形和扫描过程中引起的误差,以VPStudio、R2v、MapGIS和CADOveray4种矢量化软件为例,对软件定向及成图精度进行了分析比较,在扫描分辨率≥300dpi时,无论图纸有变形还是未变形,4种软件的定向误差均小于0 3mm,矢量化误差小于0 5mm.从矢量化的整体性能来说,VP Studio较其它几款软件更佳.更多还原

【Abstract】 It is required to change traditional paper maps to digital maps in order to manage and update datum rapidly. Scanning vector becomes one important method in gathering datum.Several vector software are made as examples. To reduce data’s deformation and error scanning,experiments are tried to analyse and compare the precision of maps made with VPStudio,R2v,MapGIS and CAD Overlay.It is concluded that rectification error is smaller than 0.3 mm and vector error smaller than 0.5 mm in 300 dpi scanning differentiate rate in the case of deformation or no deformation. From the point of the vectoroization quality,VPStudio is better than others.更多还原