Title
Defogging of road images using gain coefficient-based trilateral filter.
Abstract
Poor weather conditions are responsible for most of the road accidents year in and year out. Poor weather conditions, such as fog, degrade the visibility of objects. Thus, it becomes difficult for drivers to identify the vehicles in a foggy environment. The dark channel prior (DCP)-based defogging techniques have been found to be an efficient way to remove fog from road images. However, it produces poor results when image objects are inherently similar to airlight and no shadow is cast on them. To eliminate this problem, a modified restoration model-based DCP is developed to remove the fog from road images. The transmission map is also refined by developing a gain coefficient-based trilateral filter. Thus, the proposed technique has an ability to remove fog from road images in an effective manner. The proposed technique is compared with seven well-known defogging techniques on two benchmark foggy images datasets and five real-time foggy images. The experimental results demonstrate that the proposed approach is able to remove the different types of fog from roadside images as well as significantly improve the image's visibility. It also reveals that the restored image has little or no artifacts. (c) 2018 SPIE and IS&T
Year
DOI
Venue
2018
10.1117/1.JEI.27.1.013004
JOURNAL OF ELECTRONIC IMAGING
Keywords
Field
DocType
foggy images,road accidents,dark channel prior,gain coefficient-based trilateral filter
Shadow,Gain coefficient,Computer vision,Visibility,Pattern recognition,Computer science,Trilateral filter,Communication channel,Artificial intelligence
Journal
Volume
Issue
ISSN
27
1
1017-9909
Citations 
PageRank 
References 
6
0.42
27
Authors
2
Name
Order
Citations
PageRank
Dilbag Singh16715.16
Vijay Kumar222921.59