A defogging method of single foggy image based on physical model
Yan Liang, Zhong Chen, Jing Fan, Jing Gong, Dong Wang · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2015
The algorithm of single image haze removal using dark channel prior has a good result on restoring hazy images and makes it clear. But the original algorithm has some disadvantages such as inaccurate estimation of atmospheric light and distortion of the sky region. From the perspective of the two problems referred previously, we propose a new method to estimate the transmission and atmosphere light. First, according to the characteristics of the sky region, we divide the sky region and get the accurate atmospheric light; then, in order to avoid the distortion of the sky, a controllable parameter K is introduced to the transmission. The experiment results show that the restored images acquired by the experiment have natural colors and clear details.