DLG内插等高线算法实现

The realization of contour interpolation algorithm of DLG

本文针对DLG(Digital Line Graphic,数字线划地图)编辑过程中出现的等高线残缺,以及手绘实测等高线效率较低等问题,提出了一种用于地图编辑的等高线内插算法。文中介绍了算法的原理、实现,以及在编辑中可能遇到几种情况的处理。算法充分利用了等高线相关知识,速度快、操作简单,内插出的等高线质量较高,且本算法已经用VC++6.0编程实现并作为地图编辑软件DLGMate的一个重要模块,投入实际应用。

A contour interpolation algorithm used to solve some problems such as contour deformity,low efficiency of survey in map editing is presented in this paper.The principle of the algorithm is introduced and other improved methods for it are also provided.The algorithm makes good use of contour knowledge.The operation is very convenient and the interpolated contour with high quality can be gained.Compared with other methods,it has a perfect performance.The algorithm has been programmed with VC++ 6.0,and has been included in the software package-DLGMate,which has attained much praises from users.