三维激光扫描点云精度不均匀性对地形建模精度的影响研究

摘要

Accuracy inhomogeneities of 3D laser scanning point clouds may induce that the terrain modeling does not reflect accurately the form changes of an entity. In this paper,the analog data are established by VB,the original sampling data are generated by the establishment of strict mathematical surface model. The experimental data are finally resampled by adding different degrees of artificial noises into produced original sampling data. Establishing mesh model by Delaunay triangular,we analyzed the great influence of point cloud accuracy on modeling accuracy in quantitative way.%三维激光扫描技术获取的扫描点由于精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.通过Visual Basic编程语言实现模拟数据的生成,建立严格的数学曲面模型生成原始采样数据,在生成的原始数据上人工加入不同程度的噪声后进行重采样作为实验数据,通过Delaunay三角形建立格网模型,定量分析点云精度对建模精度的影响.