| 一种基于几何特征的面状地理要素变化检测方法 |
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| 引用本文： | 李新滨,江娜,孔杰.一种基于几何特征的面状地理要素变化检测方法[J].测绘与空间地理信息,2011,34(3):177-180. |
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| 作者姓名： | 李新滨 江娜 孔杰 |
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| 作者单位： | 1. 山东鲁西矿业有限公司,山东济宁,272053
2. 山东省国土测绘院,山东济南,250013 |
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| 摘 要： | 利用分类方法快速更新基础地理信息数据是保持其现势性的一种重要方法,分类后变化检测是其中一个难点.文章提出一种基于几何特征的面状地理要素变化检测方法,将提取的面状地理要素与待更新要素对比,计算两者多边形质心距离、形状系数、周长和面积相似程度等几何特征来判断要素是否发生变化,从而进行更新.实验结果表明,该方法能处理分类后多...
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| 关 键 词： | 地理要素 几何形状 质心 形状系数 变化检测 |
A Change Detection Method of Polygon Features Based on Geometrical Characteristic |
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| LI Xin-bin,JIANG Na,KONG Jie.A Change Detection Method of Polygon Features Based on Geometrical Characteristic[J].Geomatics & Spatial Information Technology,2011,34(3):177-180. |
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| Authors: | LI Xin-bin JIANG Na KONG Jie |
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| Institution: | LI Xin-bin1,JIANG Na2,KONG Jie1(1.Shandong Luxi Mining Co.,Ltd.,Jining 272053,China,2.Shandong Provincial Institute of Land Surveying and Mapping,Jinan 250013,China) |
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| Abstract: | Classification of RS imagery is one of the fast methods to maintain the fundamental GIS data up-to-date,but the change detection after classification is difficult.This paper proposed a change detection method based the geometric characteristic of the polygons.By comparing the extracted polygon features to the old features to estimate if the feature is changed by computing the distance of the gravity center,shape parameters,similarity of the perimeter and area,and then update the map.The experiment showed th... |
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| Keywords: | geometrical element geometrical shape centroid shape factor change detection |
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