关键词: 去雾, 均值滤波, 透射率

Abstract: At present, the defogging algorithm mainly includes the dark channel prior method and the image color channel processing method, but the defogging efficiency of these methods is not high, resulting in poor practicability. In view of this drawback, a fast defogging algorithm based on single image is proposed. Atmospheric light estimation uses the improved dark-channel approach, at first make color channel minimum filtering, and then take the maximum value of minimum filtering as atmospheric light estimation. Transmittance estimation uses physical model mean filter, first convert according to the mathematical model and a mean filter, then use the offset to correct the estimated value with transmittance. The algorithm is simple, quick and effective, and has practicality. Qualitative and quantitative analyses of the experimental results show that compared with other algorithms, it has better defogging effect and faster processing speed.

Key words: defogging, mean filter, transmittance