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Mesure de la visibilité météorologique par imagerie : Une approche modèle

Abstract : The meteorological visibility is an important element for road safety and air transport. We propose in this paper a robust estimator of meteorological visibility using a fixed camera, based on the normalized gradient selected in areas whose behaviour follows Lambert's law against the change of lighting conditions. The response of this estimator is the result of a physics-based model assuming that the depth in the scene follows a uniform distribution law. It is calibrated with data from a visibilimeter. The results are then compared to reference data and give an average error of 30 % for 150 images taken by day in different lighting conditions (10 to 8000 cd/m2) and visibility (up to 15 km).
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Submitted on : Tuesday, May 24, 2011 - 1:42:47 PM
Last modification on : Thursday, October 7, 2021 - 11:20:02 AM
Long-term archiving on: : Thursday, August 25, 2011 - 2:23:34 AM


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  • HAL Id : inria-00595286, version 1



Raouf Babari, Nicolas Hautière, Eric Dumont, Nicolas Paparoditis. Mesure de la visibilité météorologique par imagerie : Une approche modèle. ORASIS - Congrès des jeunes chercheurs en vision par ordinateur, INRIA Grenoble Rhône-Alpes, Jun 2011, Praz-sur-Arly, France. ⟨inria-00595286⟩



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