资源三号卫星前视影像的建筑物高度提取  

A method for estimating building heights based on ZY-3 satellite forward image

作　　者：霍少峰[1,2] 顾行发[1] 占玉林[1] 余涛[1] 孟庆岩[1] 张文豪[1,2] 

机构地区：[1]中国科学院遥感与数字地球研究所,北京100094 [2]中国科学院大学,北京100049

出　　处：《测绘科学》2017年第2期147-153,共7页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41371416;41471310);高分辨率对地观测系统重大专项(Y4D00100GF);基础信息产品生产算法集成研究项目(Y4D0100038)

摘　　要：建筑物高度对建筑物容积率、城市风向以及城市环境等都具有明显的影响。针对太阳入射方向与卫星观测方向在建筑物异侧时,建筑物侧面与阴影在遥感影像上因极其相似而难以区分的问题,该文基于资源三号卫星前视影像,利用基于规则的面向对象特征提取方法提取建筑物侧面及阴影特征。根据卫星成像时的太阳、卫星以及建筑物之间的空间几何关系,构建了建筑物侧面与阴影的长度比例系数,进而估算了建筑物的高度信息。最后以实测高度进行了高度提取的精度评价,验证结果表明,反演的平均精度达到了92.28%,证明了资源三号卫星前视影像在提取建筑物高度方面的良好可行性。Building heights have a significant influence on the capacity rate, wind direction and envi- ronment in city. In view of the difficulty to distinguish the shadow and the side of a building when the solar azimuth and satellite azimuth are in opposite direction of the building, a method for extracting the side and the shadow of building through the object-oriented technology was proposed based on ZY-3 satellite forward image. The proportional coefficient was built on the basis of the spatial relation among the solar, sat- ellite and building, and building heights was estimated. At last, the verified result based on the measured height showed that the mean accuracy was superior to 92.28%, which proved the good prospects of ZY-3 satellite forward image in estimating building heights.

关 键 词：建筑物高度 阴影 资源三号卫星 前视影像 建筑物侧面 

分 类 号：P208[天文地球—地图制图学与地理信息工程]