The software-based system has been developed focusing on stability and upgradability and thereby offers a future-proof solution for light and traffic measurements. Moreover, since the Hyperion™ TVM system has replaceable optics, it is straightforward to upgrade to future luminance measures by simply replacing the camera lens and/or updating the software. This may be needed to meet future requirements on extended field of view or alternative weighting of image sectors. In this way, the rest of the system (camera housing, computer cabinet, cabling etc) may be left intact. This ensures a longer life-time of the system.