摘要
对聚集分布的点群,借助凸壳算法形成多层嵌套,以反映它的逐层分布特征,为点群目标的结构化选取提供整体分布控制,借助VORONOI图为各个物体的区域性评价提供补充性的量化依据.综合过程分为两个子过程:凸壳层的合并和多边形折线顶点的综合.
With the help of convex hull algorithm, a multiple embedded convex poly-gons are constructed which represent the distribution structure and provide a controlmechtanism for structured selection of point objects. Voronoi diagram gives an addition-al quantized criterion guaranteeing a more reasonable selection. The main steps of gen-eralization consist of two subprocesses: reduring the number of embedded polygonsthrough merging the neighbouring polygoas and selecting the point objects along thenew generated polygons.
出处
《测绘工程》
CSCD
1997年第1期1-6,共6页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目
编号49571061
关键词
点群目标
凸壳
结构化综合
目标选取
地图
制图
Grouped point object
Convex hull
Structured generalization
Object selection
