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Abstract² Performances of driver assistance systems depend on weather conditions: when the later deteriorate, for instance due to fog or rain, the performances deteriorate too. We hereby present a new approach of modelling raindrops on the windshield using the declivity principle applied in different plans. Our goal is to define a profile of raindrops by analyzing intensities behavior in different planes ± horizontal, vertical, left-diagonal, and right-diagonal ± based on the declivity pULQFLSOH ¶V SURSHUWLHV.

In this paper, we present a demonstration for the urban images to prove the existence of the redundancy of information on three spectral bands. The thing that we can notice it visually and proven thanks to a statistical study carried out on the urban image. The two treatments (visual, statistical) assure us that the images of the road have a strong correlation

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