TY - RPRT TI - An introduction to the good, the bad, & the ugly face recognition challenge problem AU - Phillips, P J AU - Sahibzada, H A AU - Beveridge, J R AU - Draper, B A AU - Givens, G H AU - Bolme, D S AU - Lui, Y M AU - O'Toole, A J AU - Dunlop, J AU - Weimer, S PY - 2011 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7758 DO - 10.6028/NIST.IR.7758 ER -