【摘要】 介绍了目前GIS地图数据的 4种获取方法 :内外业一体化成图法、手扶数字化仪输入成图法、自动扫描输入成图法、航测数字化成图法。对这些成图方法的精度进行了分析讨论 ,并提出了不同条件下应分别采取的数字化成图方案。更多还原

【Abstract】 This paper introduces four acquisition methods of GIS map data, they are following: integration of indoor and field, manual digitiser input, automated scanning input and aerial photogrammetry mapping. The precision of four methods is analyzed, and they are suitable respectively for different statuses.更多还原