三维激光扫描点密度不均匀性对地形建模精度的影响研究

Study of the Terrain Modeling Accuracy Influenced by 3D Laser Scanning Point Density Inhomogeneity

三维激光扫描技术获取的扫描点由于密度的不均匀性可能导致所建立的模型不能准确地反映实体的形态变化。本文通过建立严格的数学曲面模型,由曲面模型生成原始采样数据,在生成的原始数据上进行重采样作为实验数据,通过Delaunay三角形建立格网模型,定量分析密度对建模精度的影响。

Density inhomogeneities of scan points may reflect the established model accurately while the form of an entity changes. In this paper, the original sampling data is generated by the establishment of strict mathematical surface model, used the generated raw data as the experimental data, to establish mesh model by Delaunay triangular. The quantitative analysis indicates that point cloud density influence the modeling accuracy.