【摘要】 ETM+自身融合后的遥感影像折中了全色波段的高空间分辨率和多光谱波段的光谱分辨能力。通过同一季相和同一地区的ASTER影像和ETM+自身融合后影像的极限放大进行对比分析,发现ETM+自身融合后的彩色合成影像的空间分辨力达不到15m,但能保证到17.3m;通过ASTER影像和ETM+融合后影像的NDVI植被指数的对比分析,发现ETM+自身融合后的彩色合成影像的综合光谱分辨能力仍能保持ETM+彩色合成影像的73%以上。ETM+自身融合效果的好坏与融合算法优劣也具有一定的关系。更多还原

【Abstract】 This paper mainly discusses the ability of information fusion by ETM2~4 band and PAN band from ETM+ images. The fusion images have the high spatial resolution characteristics from the Pan band image and the spectral information from ETM2-4 band images. The spatial resolution of the fusion result images is less than 15 meter, but better than 17.3 meter by comparison with zooming ASTER image at the same region. The fusion image can have 73% spectral resolution ability also by comparing the NDVIs from ASTER and fusion images. It is also pointed that the fusion result images depend on he fusion methods also.更多还原