根据大气物理模型去雾，利用中值滤波具有较好的边缘保持特性进行估计参数。-Atmospheric physics model to fog, a median filter has good edge retention characteristics to estimate the parameters.

自适应中值滤波程序，用来压制图像中噪音，同时保持原有图像有效边缘不被模糊-Median filter program, used to suppress image noise, while maintaining the original image is not valid edges are blurred

边缘保持中值滤波，来自孙明的 数字图像处理与分析基础——matlab和vc++实现 的例3-12.-Edge keep median filtering, copy reference book writen by Sun Ming, the example of 3-12 on page71.