This the third tutorial in the Foundation section. This tutorial covers the basics of drawing some simple 2D polygons such as triangle, pentagon, rectangle etc. We will make use of the code that we had generated in the previous section. We ll cover s

属于图像处理的基本算法，用MATLAB实现了顶点覆盖的近似算法。-Belong to the basic algorithm for image processing using MATLAB realization of the vertex cover approximation algorithm.

一个顶点覆盖近似算法,对开发GIS和网络方面的应用非常有用.-A vertex cover approximation algorithm, for developing the application of GIS and network very useful.