一种基于条件极值的建筑多边形直角化的方法

Rectangularity of Building Polygon Based on Condition-Extremum

在地图综合中,许多建筑多边形化简的方法都是针对于直角多边形的,建筑多边形的直角化也是地图数据在进入GIS之前对数据完整性检验的必经过程。本文介绍了一种利用条件极值来计算直角地物中各点坐标改正数的方法,该方法成功用于大比例综合缩编软件GenTool,并获得了满意的效果。

In map generalization, many algorithms of simplification of building polygon are only applied on rectangularity of building polygon. The processing of rectangularity of building polygons is indispensable before graphic data enters GIS database. The paper proposes the method based on condition - extremum to calculate coordinate displacement - value and realize rectangularity of building polygon. The solution has been proved effective in GenTool, which is the software for large - scale map generalization.