Bi-orthogonal wavelet transform based single image visibility restoration on hazy scenes

The additional information approaches, multiple image approaches and the single-image approaches are some of the techniques present for the removal of the haze. The first two methods are expensive one and has high computational complexity. Recently single image approach is used for this de-hazing process because of its flexibility and low cost. Bi-orthogonal wavelet transform is used to obtain the clear information and the edge information from the hazy image. The transmission map will be estimated through atmospheric light estimation. The median filter and adaptive gamma correction are used for enhancing transmission to avoid halo effect problem. Then visibility restoration module uses average color difference values and enhanced transmission to restore an image with better quality.