摘要
本文研究了多尺度地理空间线状目标相似关系的表达与度量问题.基于Douglas-Peucker算法,通过对线状目标形状的分析,从几何学的角度,给出了衡量基本图形中折线与线段之间形状相似度的两个重要参量.按照图形特征,利用分类讨论的方法,建立了多尺度地理空间线状目标形状相似性的计算模型.最后通过实例的计算验证了该度量方法的可行性.
The problem of representation and measurement of shape similarity relation for linear objects in multi-scale geographical space was studied in this paper.Based on Douglas-Peucker algorithm and by analyzing graphs＇ shapes,it gave two important parameters for the description of shape similarity between polygonal line and line segment in basic graph from the view of geometrical mathematics.According to characteristics of graphs,the calculation model of similarity degree between linear objects in multi-scale geographical space was built by means of discussion method.Then calculation results of an example validated that this measurement method was feasible.
出处
《测绘科学》
CSCD
北大核心
2010年第5期35-38,共4页
Science of Surveying and Mapping
关键词
多尺度
线状目标
形状相似性
度量方法
multi-scale
linear object
shape similarity
measurement method
