Xi-Ping Luo Li-Xin Zhen Gang Peng Jun Li Bai-Hua Xiao Camera based mixed-lingual card reader for mobile device. 665-669 2005 conf/icdar/2005 ICDAR http://doi.ieeecomputersociety.org/10.1109/ICDAR.2005.62 db/conf/icdar/icdar2005.html#LuoZPLX05