Image Analysis for Moss Production Under Controlled Environment

The roof top greening helps reduce the air pollution caused by emitted CO2 and preventsthe environmental deterioration resulting from heat island phenomenon. Now, much attention isbeing paid to the use of moss as a greening plant for building surfaces because of thesecharacteristics. Among all kinds of moss, Rhacomitrium Canescens is the most suitable for thegreening of building surfaces. This moss does not need any soil and fertilizer for growing, nor does it add a weight burden to the surface. In addition, it can survive under very dry conditions. Moreover,it is almost maintenance-free. In spite of its popularity, the supply of moss has not satisfied themarket demand because of the fact that moss grows very slowly. Therefore, the purpose of thisresearch is to develop a system for making moss grow faster. In this research photosyntheticactivities were qualified by using an oxygen-generating rate of moss obtained when photosynthesisphoton flux density (PPFD) and temperature was changed. The oxygen-generating rate corresponded to the gross photosynthesis. It was found that the mosshad the most active photosynthesis under a condition of 35 degree centigrade and 200.500mol.m.2.s.1. Correlation coefficients between the factor ratio of RGB and the photosynthesis rateindicated that there was a correlation between the factor of G and the photosynthesis rate. Also wefound that photosynthesis can be visualized by using the image information obtained.