Masafumi Yamada Mineichi Kudo Hidetoshi Nonaka Jun Toyama Hipprint Person Identification and Behavior Analys. 533-536 2006 conf/icpr/2006 ICPR (4) http://doi.ieeecomputersociety.org/10.1109/ICPR.2006.628 db/conf/icpr/icpr2006-4.html#YamadaKNT06