Dong Uk Cho Un-Dong Chang Kwan-Dong Kim Bong Hyun Kim Se Hwan Lee (2D)<sup>2</sup> DLDA for Efficient Face Recognition. 314-321 2006 conf/psivt/2006 PSIVT http://dx.doi.org/10.1007/11949534_31 db/conf/psivt/psivt2006.html#ChoCKKL06