“3S”应用基于DEM的单张数字影像测量精度研究  

Study on DEM-based Surveying Precision of Single Image

作　　者：程新文[1] 赖祖龙[1] 陈性义 宋海军 吴越霞 

机构地区：[1]中国地质大学

出　　处：《矿山测量》2000年第4期1-4,0,共4页Mine Surveying

摘　　要：文中从单张数字影像测量的基本数学模型出发 ,根据误差传播定律 ,从理论上探讨了外方位元素及 DEM模型精度与解析点精度关系 ,并就几种不同精度的 DEM数据进行了模拟试算。理论和实验结果均证明 ,即使根据 1∶ 5万地形图建立的 DEM数据进行单影像匹配计算 ,也能满足 1∶ 5万地质填图的精度要求。Based on the fundamental mathematical model of single digital image and error propagation law,a theoretical study is made on the outside azimuth elements in relation to DEM model precison and analytical points precision.Trial simulation computation is conducted with the DEM data having different precision levels.As evidenced by both theoretical and experimental results,even the match calculation of single image according to DEM data obtained on a 1∶50000 relief map can yield a precision up to the requirement for scale 1∶50000 geological map spotting.

关 键 词：单影 DEM模型 数字影像 测量精度 地质填图 摄影测量 

分 类 号：P23[天文地球—摄影测量与遥感]