基于路网提取的公路规模估算方法研究

Research on Road Scale Estimation Method Based on Road Network Extraction

为了对所辖农村地区耕地区域公路需求规模进行估算,研究了一种基于高分遥感影像道路提取矢量路网的农村耕地区域公路网规模估算方法。综合考虑公路网密度及自然村分布情况,设计了路网估算密度系数、自然村密度系数,以所在地形环境作为分类,充分考虑了农村耕地区域公路建设的实际需求并量化计算。实验表明,与交通运输主管部门实际需求相比,该方法的估算准确率可达到实际需求的92.61%。该方法能够在国土系数法、连通度法等传统方法之外提供一种以遥感影像为基础数据的农村耕地区域公路规模测算方法,弥补了传统方法无法充分利用新一代信息技术数据的不足,是传统方法的有效补充。该方法的设计在适用性的角度上合理。

In order to estimate the roads demand in cultivated land in rural areas,a method is proposed for estimating the road scale in rural cultivated land based on the vector road network extracted from high resolution remote sensing image.Comprehensive-ly considering the distribution of road network and villages,the estimated density coefficient of the road network and the density co-efficient of villages are designed,and the geographical environment is used as the classification in order to fully consider actual de-mand for road construction in rural cultivated areas which are quantitatively calculated.Experiments show that,compared with the actual demand of the transportation authority,the estimation accuracy of this method can reach 92.61%of the actual demand.This research can provide a method for measuring the road scale in rural cultivated land based on remote sensing image which is in addi-tion to traditional methods such as the land coefficient method and the connectivity method as an effective supplement to traditional methods.The design of this method is reasonable in terms of applicability.