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Mitigation of Visibility Loss for Advanced Camera based Driver Assistances

8 years 9 months ago
Mitigation of Visibility Loss for Advanced Camera based Driver Assistances
In adverse weather conditions, in particular, in day-light fog, the contrast of images grabbed by in-vehicle cameras in the visible light range is drastically degraded, which makes current driver assistance that relies on cameras very sensitive to weather conditions. An onboard vision system should take weather effects into account. The effects of daylight fog vary across the scene and are exponential with respect to the depth of scene points. Because it is not possible in this context to compute the road scene structure beforehand, contrary to fixed camera surveillance, a new scheme is proposed. Fog density is first estimated and then used to restore the contrast using a flat-world assumption on the segmented free space in front of a moving vehicle. A scene structure is estimated and used to refine the restoration process. Results are presented using sample road scenes under foggy weather and assessed by computing the visibility level enhancement that is gained by the method. Finally,...
Nicolas Hautière, Jean-Philippe Tarel and Didier
Added 12 Apr 2012
Updated 12 Apr 2012
Type Journal
Year 2010
Where IEEE Transactions on Intelligent Transportation Systems
Authors Nicolas Hautière, Jean-Philippe Tarel and Didier Aubert
The bibtex reference is available at:
http://perso.lcpc.fr/tarel.jean-philippe/publis/its10.html

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