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基于光能分配的遥感图像增强

DOI: 10.11834/jig.20091115

Keywords: 图像增强,光能分配,调制传递函数(MTF),遥感图像

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Abstract:

遥感图像对比度的下降主要是由于光学系统调制传递函数(MTF)的下降导致的,MTF反映了光学系统分配光能的特性。根据图像的对比度下降原理,提出了一种基于光能分配的遥感图像增强方法,其基本过程是首先将图像低频部分的光能进行抑制,然后通过Gamma校正将减少的低频部分的光能重新分配到高频部分,得到对比度提高的增强图像。实验结果表明,该方法实现简单,且取得了较好的增强效果,适用于遥感图像的增强。

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