Chiharu Hongo¹, Takahisa Kitagami¹, Hiroyuki Wakabayashi², Boedi Tjahyono³, Sitaresmi Dewayan⁴ and Eisaku Tamura¹, (1)Center for Environmental Remote Sensing, Chiba University, Chiba, Japan, (2)Collage of Engineering, Nihon University, Koriyama, Japan, (3)Faculty of Agriculture, Bogor Agricultural University, Bogor, Indonesia, (4)Provincial Office of Food Crops and Horticulture of West Java Province, Indonesia, Bandung, Indonesia