中文摘要：

本次试验主要是通过改进等高线的提取、平滑以及去除碎屑的填洼算法,加上引进光照模型的方法,将原有的传统河道制图方法进行改进,实现对河道地形的三维立体制图方式。通过进一步的方法模型化,解决河道地形图绘制过程中表达效果不清晰的问题,通过直观的方法实现专题图的制作,而且具有思路清晰、操作简便、批量绘制、实现河道地形的三维显示、时间成本较原来缩减的优势。

英文摘要：

This study mainly discusses the algorithms of contour extraction, smoothing and filling. With the introduction of illumination model, the traditional river channel mapping method is improved so as to achieve the 3D drawing of watercourse terrain. It can solve the problems that watercourse topography map production process is cumbersome. The new method is clear, easy to operate in a batch model, less time, and can display 3D watercourse terrain.