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  • 软件名称:基于形态学阴影指数的高分二号影像建筑物高度估计#br#
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 田峰,陈冬花,黄新利,李虎,姚国慧
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 高分二号卫星是我国自主研发的高分辨率对地观测卫星,分辨率达到亚米级。利用高分二号卫星遥感影像,结合数学形态学和面向对象分类的思想进行城市建筑物高度估计。首先,利用多尺度分割将影像分割成对象;进而结合光谱、形状、形态学阴影指数(MSI)等特征面向对象进行分类,相对准确提取出建筑物的阴影并计算阴影的长度;最后,结合影像成像时的卫星、太阳和建筑物的几何关系模型进行建筑物高度估计,并利用实地测量数据进行精度评价和误差分析。结果显示,90%的估计结果绝对误差小于1 m,说明该方法可以有效地从高分二号影像中提取建筑物高度,展现了国产高分辨率遥感影像提取城市建筑物信息的巨大潜能。  关键词: 高分二号;  形态学阴影指数(MSI);  面向对象;  阴影提取;  建筑物高度     Abstract: GF-2 is a high resolution earth observing satellite with sub\|meter resolution which is developed by our own technique.To estimate urban building height based on GF\|2 remote sensing image combined with the idea of mathematical morphology and object\|oriented classification.First of all,segment image based on multi\|scale segmentation.Then extract shadow and calculate its length based on object\|oriented classification combined with spectral,shape,Morphological Shadow Index (MSI) and other features.In the end,estimate building height based on the geometrical model of satellite,sun and building and then accuracy evaluation and error analysis are carried out by using the field measurement data.Experimental results showed that 90% of the buildings’ absolute error is less than 1 m.This experiment demonstrate that the method can extract the height of urban building from the GF\|2 image effectively and the immense potential of domestic high resolution remote sensing image in applications on urban building information extraction.

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