关键词: 图像去雾, 暗原色先验, 双边滤波, 腐蚀

Abstract: The opacity of the media in the atmosphere（such as fog, smoke and water etc.） images are the outdoor scene degraded, and dark channel prior method has achieved good results in the treatment of defogging, but this method consumes large memory and the longer image processing time. To solve this problem, this paper proposes a fast image dehazing method for image defogging based on the dark channel prior, which uses bilateral filtering and corrosion. Firstly, this method uses dark channel prior to get rough soft matting, then uses corosion processing for the boundary point; at last, bilateral filter is used to get the detailed soft matting and achieve the final restored image. Experimental results show that this method not only reaches the requirement of image restoration, but also the processing speed of this method is much better than the original one, and it will be used in video haze.

Key words: dehazing, dark channel prior, bilateral filter, corrosion