摘要
长城是中华民族的象征,是人类历史上最伟大的建筑工程之一。基于高分辨率遥感数据"SPOT-5"和DEM数据,首先运用微分几何方法提取高亮度线性地物信息,然后根据长城特殊的地形地貌特征,运用GIS水文学方法提取出山脊线,并在山脊线周围做一个几米的缓冲区,将高亮度线性地物信息和山脊线缓冲区进行叠加分析,比较准确地提取出了长城信息,并进行提取精度的评估。
The Great Wall is the symbol of China, and it is one of the greatest structures during human history. The Great Wall information is analyzed and extracted using high spatial resolution data ＂SPOT-5＂ and DEM data. Firstly, light linear object is extracted using differential geometrical method based on ＂SPOT-5＂ data, then the ridge is extracted using GIS method based on DEM data, and a buffer about ten meters is built around the ridge. Finally the linear object and the buffer is analyzed using GIS method, and the Great Wall information is extracted. Through precision evaluation, it is indicated that the result is satisfying.
出处
《遥感技术与应用》
CSCD
2007年第4期520-523,共4页
Remote Sensing Technology and Application
