无人机倾斜摄影测量在1∶500测图中的若干问题探讨

Discussion on Several Problems on UAV Oblique Photogrammetry Surveying and Mapping in 1∶500 Topographic Map

针对近年来发展迅速的无人机倾斜摄影测量技术,介绍了利用该技术实现三维立体建模、1∶500大比例尺测图的方法。具体探讨了三维模型构建中遮挡区域的处理方法、全画幅相机获取影像对像控点密度的要求,以及根据三维模型进行等高线生成的方法,并分别通过实验数据,验证了方法的有效性及成果精度,对后续进行1∶500地形图测绘具有一定借鉴意义。

With the rapid development of UAV oblique photogrammetry technology in recent years,this paper introduces the method of realizing 3D modeling and 1∶500 large scale topographic map by this technology.The processing method of occlusion area in 3D model construction,the density of control points requirements with full-frame camera,and the method of contour generation based on 3D model are discussed in detail.And the method effectiveness and accuracy are verified by experimental data,which has certain reference significance for the subsequent 1∶500 large scale topographic map.