Abstract: No method could be used to get the exact numbers of these variables in the original Koschmieder model, whose solution is an ill-posed problem. Thus, we propose a novel Koschmieder model whose solution is much easier, while the proposed model has something in common with Atmosphere Degradation Model. Then a novel method for fast image dehazing is proposed based on the proposed model, compared with the dehazing method proposed by He, the experimental results yields that out method could realize fast dehazing, while could keep the scene’s color constancy and get the same or even better contrast promotion

Key words: image dehazing, Koschmieder model, atmosphere degradation model, color constancy

摘要： 由于原始Koschmieder模型中的变量都无法获得精确解，其求解是一病态问题，结合大气退化模型提出了一种弱化的Koschmieder模型，并基于该模型提出了一种快速图像去雾新方法。该方法避免求解晴天时所获图像的场景色度、大气传递效率和场景景深，与Dark-Channel方法相比，在速度上取得了较大提升，同时能够保持场景的颜色恒常性，而且在提升图像对比度上得到了近似甚至更好的效果。

关键词: 图像去雾, Koschmieder模型, 大气退化模型, 颜色恒常性