无人机倾斜摄影测量与地面三维激光扫描的精度对比

Accuracy Comparison Between UAV Tilt Photogrammetry and Ground 3D Laser Scanning

无人机倾斜摄影以及地面三维激光扫描等新型测绘技术近年来快速发展,在诸多领域得到了广泛应用。为此,文章以某科技园为例,对无人机倾斜摄影测量与地面三维激光扫描的精度进行对比。通过对精度结果进行分析得出:无人机航测地面点的精度优于房角点,但是三维激光扫描房角点的精度优于地面点;无人机航测与三维激光扫描的平面精度相当,但在高程精度方面,三维激光扫描精度显著高于无人机航测精度。实践证明,将无人机倾斜摄影测量和三维激光扫描技术相结合,能大大提高测量效率并降低劳动强度。

New surveying and mapping technologies such as UAV tilt photogrammetry and ground 3D laser scanning have been developed rapidly in recent years and have been widely used in many fields.Taking a science park as study case,this article compares the accuracy of UAV tilt photogrammetry and ground 3D laser scanning.Through the analysis of the accuracy results,it is concluded that the accuracy of ground points for UAV aerial survey is better than that of house corner points,but the accuracy of house corner points for 3D laser scanning is better than that of ground points,then the plane accuracy of UAV aerial survey is equivalent to that of 3D laser scanning,but the elevation accuracy of 3D laser scanning is significantly higher than that of UAV aerial survey.Practice has proved that the combination of UAV tilt photogrammetry and 3D laser scanning technology can greatly improve measurement efficiency and reduce labor intensity.