开封市Spot5全色波段与多光谱影像融合评价

以Spot5全色波段与多光谱波段为例,用PCA、Brovey、IHS等三种像素级融合方法对其进行融合研究。分别运用灰度均值、相关系数、平均梯度等三个传统的指标在影像亮度、光谱保真度以及高频信息融入度三个方面对其评价。最后综合这些指标在信息量以及融合指数方面对融合影像进行综合评价,从而建立一套完整的影像评价体系。

Estimation of Spot5 Panchromatic Band and Multi-spectral Image Fusion in Kaifeng

In this paper, we used pixel fusion methods： PCA, Brovey and IHS to research image fusion of Spot5 panchromatic hand and multi-spectral bands.At the first, used the three traditional indicators of the mean, correlation coefficient and average gradient to evaluate the fusion image in the three aspects of image brightness, spectral fidelity and high-frequency information. Finally combined these indicators to evaluate the image comprehensivly in the amount of information and fusion index, so as to establish a complete image evaluation system.