| 资源卫星ETM+影像城镇信息挖掘分析 |
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| 引用本文： | 潘卫华,张春桂,陈家金,林晶.资源卫星ETM+影像城镇信息挖掘分析[J].地球信息科学,2007,9(2):129-133. |
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| 作者姓名： | 潘卫华 张春桂 陈家金 林晶 |
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| 作者单位： | 福建省气象科学研究所, 福州 350002 |
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| 基金项目： | 福建省科技攻关项目
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中国气象局科技攻关项目 |
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| 摘 要： | 城镇建成区信息是遥感影像提取中的一个重点。本文以泉州市2000年的Landsat ETM+影像,利用多种方法,提取城镇聚落的信息,并对比各种方法的优缺点后予以改进。研究表明基于Landsat卫星提取城镇信息方法,改进后方法较之原方法提取精度随之提高;经比较认为仿植被指数提取法简单快速,光谱阈值法精度较高但较复杂。
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| 关 键 词： | 遥感 仿植被指数 光谱阈值 融合 城镇 |
| 收稿时间： | 2005-05-15 |
| 修稿时间： | 2005-05-152006-01-14 |
Study on the Methods of Extracting Urban Land Use Information Based on Landsat ETM+ Image |
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| PAN Weihua,ZHANG Chungui,CHEN Jiajin,LIN Jing.Study on the Methods of Extracting Urban Land Use Information Based on Landsat ETM+ Image[J].Geo-information Science,2007,9(2):129-133. |
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| Authors: | PAN Weihua ZHANG Chungui CHEN Jiajin LIN Jing |
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| Institution: | Institute of Meteorological Science of Fujian Province, Fuzhou 350002, China |
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| Abstract: | How to extract exactly urban information is always very important in the application of remote sensing.There are different methods of extracting urban land use information based on Landsat image,such as Normalized Difference Built-up Index(NDBI),Spectrum Threshold Extraction,Supervised Classification by computer and interactive visual interpretation;however,each of them has its own advantages and disadvantages in specific application.The main objective of this paper is to compare the efficiencies and accuracies between the multiple methods,and ameliorate these methods to improve their efficiency.In this study,we take Quanzhou city as study area,and utilize Landsat ETM image received in 2000 to extract the urban land-use information using the above-mentioned multiple methods respectively.By com-parison,the study result reveals that these ameliorated methods can work better than before,NDBI can extract information easily and quickly,and Spectrum Threshold Extraction can acquire high accuracy at the cost of complexity. |
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| Keywords: | remote sensing NDVI spectrum threshold fusion urban |
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