Accessible Optical Wireless Pedestrian-Support Systems for Individuals with Visual Impairment. - Hirotoshi Kii; Yusuke Murata; Saeko Oshiba; Yuki Nagai; Hiroki Watanabe; Shunsuke Iki; Yoji Kitani; Noriaki Kuwahara; Kazunari Morimoto (IIAI-AAI, 2014)