Survey on video-based visibility detection method

Visibility is an important factor to affect aviation,marine,road transport and military activities and so on.Low visibility brings great inconvenience to traffic,or even cause accidents.Therefore,it is of great importance to realize real-time prediction and prewarning of the visibility.In order to improve traditional methods of visibility detection,an analysis and experiment of such technologies as wavelet transform,camera self-calibration,edge feature extraction and curve fitting were made in the paper.Reasonable results were got and these methods were applied in practice.In the paper,these video-based visibility detection methods were discussed,introduced and compared with each other,and finally the development direction and prospect of these methods were elaborated as well.