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结合天空识别和暗通道原理的图像去雾

DOI: 10.11834/jig.20150407

Keywords: 天空识别,暗通道原理,图像去雾,色彩重映射

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Abstract:

目的目前较为流行的去雾算法对天空区域的处理效果不佳,容易造成方块效应以及色彩严重失真.针对该问题,提出一种基于天空识别和暗通道原理的单幅图像去雾方法.方法天空识别算法,将雾图分为天空与非天空部分,对其分别估计透射率图,通过大气散射模型得到复原图像;针对利用暗通道原理得到的去雾图像普遍偏暗的问题,对其进行色彩重映射,以增加图像亮度,提升图像视觉效果.结果大量实验结果表明,本文算法复原的图像清晰自然,尤其是天空区域平滑明亮,取得了很好的去雾效果.结论基于天空识别,提出了一种新颖的单幅图像去雾算法.与HeKaiming以及Tarel的算法相比,去雾后图像整体效果更佳.

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