Masashi Nishiyama Osamu Yamaguchi Face Recognition Using the Classified Appearance-based Quotient Image. 49-54 2006 conf/fgr/2006 FG http://doi.ieeecomputersociety.org/10.1109/FGR.2006.46 db/conf/fgr/fgr2006.html#NishiyamaY06