Because of the atmosphere scattering phenomenon, weather degraded imagescaptured in fog suffer from poor contrast and low visibility. This significantlyaffects the traffic systems and outdoor visual systems. Hence, it is imperative toenhance the low-contrast images degraded by fog. At present, researches on theenhancement of fog-degraded images are still under discussion. A few researchesare concentrate on the analysis of the complex physical model. Due to thecomplexity of modeling situations, many of these...