Daigo Muramatsu Kumiko Yasuda Takashi Matsumoto Biometric Person Authentication Method Using Camera-Based Online Signature Acquisition. 46-50 2009 ICDAR http://dx.doi.org/10.1109/ICDAR.2009.112 conf/icdar/2009 db/conf/icdar/icdar2009.html#MuramatsuYM09