基于LiDAR数据生成光滑等高线

A Smooth Contour Generation Method Based on LiDAR Data

首先通过曲面拟合修正部分粗糙地面点的高程,然后建立三角网跟踪等高点,采用加权二次多项式消除毛刺,最后采用顾及等高距的样条函数内插等高线。实验表明,本文方法能够在损失较小的精度下生成不相交的光滑等高线,视觉效果好。

We propose a method with the following procedure.Firstly,we correct the elevation of some rough ground by surface fitting.Secondly,we track the contour point by building triangle mesh and eliminate burrs by weighting quadratic polynomial.Finally,we interpolate to get the smooth contour by spline function with contourinterval.The experimental results show that our method can generate uncrossed and smooth contour in less loss of precision.