【摘要】 ASTER(高级空间热辐射热反射探测仪)是高光谱遥感影像时代到来的标志,高光谱遥感与一般遥感影像相比能为对地观测提供更高质量的信息源.以福州市的一景ASTER影像数据进行主成分分析及波段运算,然后进行非监督自动分类,结果表明能较好地提取地面的人工建筑物信息.该结果可服务于城市规划和城市环境评价中.更多还原

【Abstract】 Introduced ASTER image as the sign of a high spectrum resolution era. A comparison was made between high spectrum resolution images and previous common remote sensing images. Great differences, between Aster and other common images such as TM, are obvious as far as some technical parameters are concerned. In this article, an ASTER image, covering the whole city of Fuzhou, is preliminarily disposed during some pre-classification processes such as principal components analysis and band math. Unsupervised classification method of Isodata is used to extract the cover of building. Then the disposed image is used to extract the concrete/urban development information of the research area with a good result. This result can be used in further analysis, such as urban planning, urban environment evaluation using ecological theory of interstice and so on.更多还原