Artificial light in urban conglomerates causes nocturnal light pollution. Excessive light radiation is expensive as it wastes energy and not only impacts the environment but may also harm human health. Authorities are showing a growing interest in quantifying the amount of artificial light radiated at ground level in their jurisdiction. The authors developed an approach based on fusing simultaneously acquired hyperspectral data and photogrammetric imagery. The resulting luminance maps are accurate and have a high spatial resolution.
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