00492nas a2200133   4500008004100000245011000041210006900151260001200220100002200232700002200254700001600276700002100292856004500313       2015                        eng d00aZebra Crossing Spotter: Automatic Population of Spatial Databases for Increased Safety of Blind Travelers0 aZebra Crossing Spotter Automatic Population of Spatial Databases  c10/20151 aAhmetovic, Dragan1 aManduchi, Roberto1 aCoughlan, J1 aMascetti, Sergio  uhttp://escholarship.org/uc/item/39x5w6fp