Abstract
We develop a design support system for room lighting environment using interactive evolutionary computation. When many LED's with different lighting levels are
distributed on wide ceiling and walls, the number of optimization solutions for desired lighting environment drastically increases. We introduce IEC into a lighting design support system to overcome this problem. Usually, it take time to render many CG room objects, which hinders lighting design support even IEC is used. We overcome this problem by introducing a fast rendering method that approximates real rendering. First, we make a 2-D room lighting image from a fixed view angle when only one LED is turned on. We made many similar 2-D images by changing the turned LED. The fast rendering method is to generate any lighting image by weighted sum of the 2-D images. By combining the IEC method and the fast rendering method, the lighting design support system can be used by not only professional but also any users practically.
