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顾及分割效果的QuickBird影像融合方法对比研究

DOI: 10.6046/gtzyyg.2010.03.05, PP. 21-25

Keywords: 影像融合,影像分割,空域与频域保真,方法比较

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Abstract:

影像融合是实现高空间分辨率遥感影像中全色数据与多光谱数据优势互补的基本途径,已有的融合方法比较侧重融合图像的视觉效果,较少考虑针对融合影像的分割、分析等后续处理与应用环节。以北京市某地区的QuickBird影像为研究数据,将融合、分割实验研究结果与定量分析相结合,从光谱和几何特征两方面对现有基于像素的主流融合方法IHS、PCA、HPF(高通滤波)、Wavelet-PC(WPC)、Ehlers(ELS)及GS(正交变换)进行对比研究,结果表明,不同融合方法针对同一数据源得到的融合影像在目视效果与定量指标两个方面均存在明显的差异,若顾及后续分割与分析,则以GS融合法的综合效果最佳。

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