An Investigation of Fog Water Droplet Structure Characteristics Based on Image Definition
Xianqiao Chen, Wenjing Kong, Xiumin Chu, Chengmin Zou · 2013
Fog is a common natural phenomenon caused by water droplets which condense onto on dust, particles, bacteria and other condensation nucleus when the ground temperature drops. In the fall and winter seasons, fog often appears because of the surface radiation temperature inversion effect. Moreover, the local fog even may appear throughout the year over the rivers of the Three Gorges Reservoir Area. The fog brings low visibility and makes travel inconvenient to people and also causes potentially serious security risks to the road and water traffic. Therefore, it is important to study the image clearness techniques in these foggy weather conditions. There is a need to study traffic object's characteristics such as image definition, color, brightness, frequency and fog droplet spectrum structure to achieve the feature area by traffic scene image enhancement techniques including stretching, filtering and sharpening of the interested object in the under foggy weather. When using the method of image restoration to enhance the visual effects, these characteristics are needed to adjust the parameters of the model and to correct, and optimize the model. Therefore, the paper focuses on analyzing the various characteristics of the fog and key objects in the traffic scene under foggy weather conditions for the follow-up study of enhancing and restoring the degraded images.