62017-03-24 , 法政大学大学院デザイン工学研究科
This research work focuses on the quantitative evaluation of progressing discoloration of lumber surfaces exposed to sunlight and water. By scanning periodically the specimens with different surface roughness, exposed to different orientations, the progress of discoloration was digitized. The color data was converted to the color standards CIELAB. Expressing the sequential discoloration in such numerical form contributes to the realistic rendering of wood that is indispensable to simulate the aging of wooden buildings.