中文说明：dehzing是总的代码，此代码包括 (1)dark channel(暗通道先验规律。首先是获取图像，然后得到一张与原图一样大小的灰度图，接下来就是对暗通道先验的转换代码。就先取每个像素的最小值，然后再取每个窗口的最小值。 (2) guided filter（这里面包括box filter。这个滤波主要用来细化暗通道先验中的透射率t（x），其中导向图是I，p指预估透射率t（x），然后就是guided filter那片论文中的第7/8/9公式翻译为代码，即可）.
English Description：
dehazing is the total of code, which comprises (1) dark channel (dark passage priori rule. The first is to obtain an image, then get one with the same size as the original grayscale, the next step is to convert dark passage priori code on the first minimum value of each pixel, then the minimum value of each window. (2) guided filter (which involves the box filter. this filter is mainly used to refine the a priori in the dark passage transmittance t (x), where the guide map is I, p refers to the estimated transmittance t (x), and then is guided filter piece of paper in the first 7/8/9 formula translated into code that can be).