曲线弯曲多叉树模型及其在地图综合中的应用

摘要

This paper researched the relation between bend multi-branch tree of curve and multi-scale map representation based on bends as a basic structure unit of curve, and proposed the model of multi-branch tree of bend for curve shape, which was based on bend binary tree, whose defects had been pointed out. Furthermore, it brought up a generalization strategy for curve multi-branch tree of bend. The experimental results that the model is used in contour simplification show the algorithm proves very effective in the aspects of holding the shape of line feature, geographic-feature consistency.%针对曲线弯曲二叉树在曲线形态表达上的不足,以弯曲作为曲线形态的单元,探讨了曲线的多尺度表达与弯曲树状结构间的关系,提出了曲线的弯曲多叉树模型以及探测方法,并利用曲线弯曲多叉树模型制定了基于弯曲的曲线综合化简策略.该模型在等高线化简上的应用表明,其无论在线要素的整体形态保持上,还是在地理特征的一致性保持上都非常有效.