基于微观地形因子的防界线提取算法  

Defensive boundary extraction method based on micro terrain factors

作　　者：孔月萍[1] 刘大维[1] 张跃鹏[2] 高黄玮 KONG Yueping;LIU Dawei;ZHANG Yuepeng;GAO Huangwei(School of Information & Control, Xi’an University of Architecture & Technology, Xi’an 710055, China;Xi’an Research Institute of Survey and Mapping, Xi’an 710054, China)

机构地区：[1]西安建筑科技大学信息与控制工程学院,西安710055 [2]西安测绘研究所,西安710054

出　　处：《计算机工程与应用》2017年第6期174-177,192,共5页Computer Engineering and Applications

基　　金：46批中国博士后基金(No.20090461321)

摘　　要：防界线作为一种基本的线状地形特征,在军事领域和民用领域都有着广泛的应用前景。现有的提取技术仅考虑防界线的可视域特性,所提取的结果偏差大,不足以支持实际应用。为此,提出一种防界线提取方法,该方法着眼于防界线局部的微观形态特征,利用滑动窗口分析山体曲面的坡度变化情况,筛选出坡度变化剧烈的特征点并结合其他约束条件形成防界线。实验结果表明,所提取的特征线符合设防要求。Defensive boundary as a basic linear terrain feature, it has broad application outlook in military field and civil field. However in the published literature extraction of defensive boundary only considers its visible range characteristic.Besides, because the accuracy is poor, defensive boundary extracted by existing methods cannot support the practical application. In this paper, a new defensive boundary extraction method focusing on the micro physical characteristic of the local defensive boundary is proposed. It analyzes the slope changes of mountain surface by using sliding window, and then screens out the feature points whose slope changes sharp, and finally combines with other constrains forming the defensive boundary. The results of the experiment show that the extracted feature lines accord with requirements of fortification.

关 键 词：防界线 微观地形因子 断面剖分 坡度突变 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]