基于ARX的矢量地图离散化技术

Rasterizing Technique for Vecter Map Based on ARX

基于MFC开发ARX程序直接读取矢量地图,通过改进的高效率的线性内插算法实现等高线层转换,该算法解决了一般线性内插算法中常有的平顶现象。区域层直接通过修改有序边表多边形扫描转换算法实现离散。最后应用以上技术实现了一个矢量地图数字离散化系统,并通过对某市矢量地图离散化证明了系统的高效,达到实际工程应用的要求。

The vector map is directly getten by ARX application programmed based on MFC. Elevation contour map is rasterized by an efficaciously improved linear intra-interpolation algorithm which avoids the phenomenon of flat top in the general intra-interpolation algorithm. Region is rasterized by an improved ordered list polygon scan conversion algorithm. In the last place, an vector map rasterizing system is accomplished by utilizing these technologies, and it is proved by rasterizing a city vector map that the system is efficacious and satisfy practical engineerings need.