Night-time Mobile Mapping of Road Surface Luminance

The installation of lighting improves safety in a road environment. Road lighting standards set requirements for the average luminance and luminance uniformity on a road surface. The authors of this article are working to develop a novel approach for evaluating night-time road lighting conditions based on luminance-calibrated 3D point cloud data. This new measurement system integrates imaging photometry, which is commonly used to measure road lighting, with mobile laser scanning techniques, which are mainly used to measure the 3D geometry of the road environment. Here, the authors explain how the measurement system is utilized to produce a georeferenced luminance point cloud and discuss the potential applications of their measurement system.