倾斜影像与LiDAR点云数据融合关键技术应用探讨

Discussion on the Application of Key Technologies of Oblique Image and LiDAR Point Cloud Data Fusion

通过基于倾斜摄影测量与机载LiDAR点云数据的融合关键技术探讨,详细分析并给出了“绝对坐标法”与“手动控制点法”的具体应用要求与场景,并借助某个具有异形结构的建筑物作为测试案例,进行了倾斜摄影、机载LiDAR扫描与融合处理,结果表明:融合后的实景模型在分辨率、精细化程度、结构完整性等方面均优于融合前;精度上,融合后的模型在平面点位中误差与高程中误差上均得到了大幅提高,且高程精度较平面精度提升更为显著,获得了较好的测试效果。该融合方案也可为同类建模工作提供参考。

According to the discussion on the key integration technology based on oblique photography measuring and airborne Li DAR point cloud data,the paper makes a detailed analysis and provides the specific application requirements and scenarios of“absolute coordinate method”and“manual control point method”in detail.The oblique photography and airborne Li DAR scanning and integration processing are carried out with the help of a building with special-shaped structure as a test case.The results show that the real-scene model after integration is superior to the model before integration in terms of resolution,refinement and structural integrity.In terms of accuracy,the model after integration has been greatly improved in terms of error of plane point location and elevation,and the elevation accuracy has been significantly improved compared with the plane accuracy,which has achieved good test results.The integration scheme can also be a reference for similar modeling operation.