基于多视前方交会实景三维模型测图精度分析

Accuracy analysis on real 3D model mapping based on multi-view forward intersection

为了进行多视前方交会实景三维模型测图精度分析,完成了某市4.5 km^21:500实景三维模型的生产,并在此基础上测绘了1:1000地形图,统计分析了实景三维模型精度,检测了地形图平面、高程和间距精度,其精度均优于传统航空摄影测量,而且高程精度满足平坦地区高程点0.15 m的要求,无需野外实测高程点,突破了传统摄影测量不能满足大比例尺地形图平坦地区高程精度的现状。

In order to carry out the accuracy analysis of the multi-view forward intersection real 3D model mapping,the real 3D model production of 4.5 km^2 and 1:500 was completed in a city,and 1:1000 topographic map was surveyed and mapped,the precision of real 3D model was counted and analyzed,the plane,elevation and spacing accuracy of topographic maps were tested,and their accuracy was better than the traditional aerophotogrammetry,and the elevation accuracy met the requirements of the flat area elevation point of 0.15 m.There was no need to measure elevation points in the field,breaking through the current situation that the traditional aerial photographic measurement couldn’t meet the elevation accuracy of the large-scale topographic maps in flat areas.