Visibility of LED Blocks Mounted on Crosswalk Boundaries for low Visual Capacity. - Norihiro Ikeda; Kazuya Takahashi; Tomoyuki Inagaki; Katsuya Sato; Shin-Ichi Ito; Motohiro Seiyama; Kiyohito Takeuchi; Hiroshi Ogino; Shoichiro Fujisawa (AAATE Conf., 2015)