> If you look at other peoples videos of that street at night on youtube it's well lit. I don't think you can look at videos and judge the level of illuminatio

> If you look at other peoples videos of that street at night on youtube it's well lit. I don't think you can look at videos and judge the level of illumination well; their videos could be more or less accurate than Uber's, and what I see depends on codecs, video drivers, my monitor, etc. Also, any video can easily be edited these days. Is there a way to precisely measure the illumination besides a light meter? Maybe we can use astronomers' tricks and measure it in relation to objects with known levels of illumination. Much more importantly, I'm not even sure what properties of light we're talking about - brightness? saturation? frequencies? - nor which properties matter how much for vision, for computer vision, and for the sensors used by Uber's car in particular. I'm not taking a side; I'm saying I have yet to see reliable information on the matter, or even a precise definition of the question.