Mobile-Based Luminance Measurement for Night Scenes

Summary form only given. All living things adjust their behavior according to natural light. Human´s invention of artificial light has done much to enhance our night-time environment [1]. The night-time illumination is really important including wonderful lightning in metro cities and warm lightening in rural areas. Especially, the beautiful illumination in a city makes the city to live and attract tourists from all of the countries. We can easily find New York, Hong Kong, and etc. as examples of such a city. However, if not properly controlled, obtrusive light (commonly referred to as light pollution) can present serious physiological and ecological problems [2]. Therefore, the effort to minimize obtrusive light is very important for safe night-time activity.