倾斜摄影仿地飞行技术在山地地形图测绘中的应用研究

Research on the Application of Oblique Photography and Ground Simulation Flight Technology in Mountain Terrain Mapping

针对传统固定航高条件下在山地飞行时获取的影像分辨率差异大,所生产的地形图精度易超限、不均匀的问题,文章提出采用仿地飞行技术进行倾斜影像数据获取,并在生成的实景三维模型上采集地形图的作业方案。此外,利用外业采集的检查点对文章得到的地形图精度进行了检测。结果表明,采用倾斜摄影仿地飞行技术生产的地形图精度均匀,可以满足山地1:2000大比例尺地形图精度的要求。

In response to the problem of large differences in image resolution obtained during traditional fixed altitude flying in mountainous areas,as well as the tendency for the accuracy of terrain maps produced to exceed limits and be uneven,this paper proposes to use ground simulation flying technology to obtain oblique image data and collect terrain maps on the generated realistic 3D model.In addition,the accuracy of the terrain map obtained in the paper is checked using checkpoints collected from field work.The results indicate that the terrain map produced using oblique photography and ground simulation flight technology has uniform accuracy and can meet the accuracy requirements of large-scale terrain maps in mountainous areas with a scale of 1:2000.