基于资源三号影像的建筑物高度信息提取方法  

Method for extraction of building height information based on ZY-3 image

作　　者：赵志明[1,2] 周小成[1,2] 付乾坤[1,2] 汪小钦[1,2] 

机构地区：[1]福州大学福建省空间信息工程研究中心,福州350002 [2]空间数据挖掘与信息共享教育部重点实验室,福州350002

出　　处：《国土资源遥感》2015年第3期19-24,共6页Remote Sensing for Land & Resources

基　　金：国家自然科学青年基金项目"结合互信息和遗传算法特征选择的多层次面向对象影像分类"(编号:41201427)资助

摘　　要：建筑物高度信息的获取是高分辨率遥感影像信息提取研究中的热点问题之一。该文提出了一套结合面向对象分类方法的建筑物高度反演技术方法。首先,利用建筑物和阴影的形态学指数,通过面向对象分类方法提取建筑物轮廓和阴影信息;然后,采用相交线平均法计算阴影长度;最后,根据阴影长度和建筑物高度的几何关系模型计算建筑物高度。采用西安市的国产资源三号(ZY-3)卫星遥感数据进行提取试验,通过171栋建筑物的实际测量高度对结果进行验证,获得了91.23%的总体精度,显示出该方法在建筑物高度信息提取研究方面具有一定的现实意义。The extraction of the information of building height from the high - resolution remote sensing image is a hot research topic in the study of the information extraction. This paper proposes a set of building height inversion techniques in combination with the object - oriented classification method. First of all, through the object - oriented classification method, the building outline and shadow information are extracted by using morphological building and shadow indices; and then, the intersection line average method is employed to calculate the length of the shadow; finally, the height of building is calculated according to the geometric relation model between the shadow length and the building height. The proposed method was validated on domestic ZY -3 satellite remote sensing data of Xi＇ an City, and the overall accuracy of 91.23% was obtained by verifying the result using the actual measuring height of 171 buildings. The results achieved by the authors have a certain practical significance for the study of building height information extraction.

关 键 词：资源三号(ZY-3) 形态学建筑物指数 形态学阴影指数 面向对象分类 建筑物高度 阴影长度 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]