摘要
地图扫描数字化是GIS数据采集的重要手段 ,地图上的图形经扫描数字化后 ,其几何形状和面积因误差的存在而发生改变。文中利用几何纠正与面积符合相结合的方法建立数字化点的误差模型 ,并根据解算结果对GIS中的图形进行纠正 ,使数字化后的图形面积与实测面积相一致 。
Map scanning digitization is one of the ways to capture spatial data in GIS. After digitization,the geometrical figure and area of a figure may change because of errors. In this paper,an error model combining geometrical with area rectification is established. By using this model, the areas measured on digital maps coincides with those of measured in field, and this can satisfy the requirements of land management department.
出处
《测绘学院学报》
北大核心
2001年第4期242-245,共4页
Journal of Institute of Surveying and Mapping
基金
国家自然科学基金资助项目 ( 4 970 10 14 )
