DAYLIGHT CALCULATION USING SKY PROJECTION WITH COMPUTER GRAPHICS

Abstract

This paper describes on the development on the daylight calculating method using computer graphics screen. The principle of this method is based on the traditional graphical solution of a configuration factor. First, the projected figure of the surroundings is drawn with specific color correspond iris to its luminance. Second, by scanning the projected fignres on the computer screen and getting pixel color, the luminance at each scanning point can be known and the illuminance of the reference point can be obtained. This method is great useful to visualize the calculation procedure and to apply for any outside conditions.