摘要
利用三维成像仪获取的DSM作为数据源 ,首先采用影像分割得到建筑物的平面轮廓线 ,再根据建筑物一般具有规则平面形状的特点 ,对建筑物的平面边缘线进行规格化处理 ,最后求出建筑物的平均高度值 ,从而得到建筑物的三维信息。试验表明 ,该方法是实用的。
With the development of society,Three_dimensional information of man_made buildings is being used in many fields,therefore,the automatic extraction of buildings is a research focus.DSM(digital surface models) can be generated in quasi_real_time by airborne three_dimensional imager.In this paper,we focus on the building extraction and edge regulation.First the DSM image is segmented and we can get the rough contour of buildings,and then the edges of buildings are regulated because the shape of the buildings is usually regular.The height of building is also calculated according to the DSM data.So,the three_dimensional information of building can be given automatically.The method discussed in the paper is used in a test area,and the result is satisfactory.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2002年第4期408-413,共6页
Geomatics and Information Science of Wuhan University
基金
国家"8 63"计划资助项目 (863_3 0 8_12_0 1(1) )。
