PDF - http://digbig.com/4fpsp
"Face Recognition with Renewable and Privacy Preserving Binary Templates
Kevenaar, T.A.M.; Schrijen, G.J.; van der Veen, M.; Akkermans, A.H.M.; Zuo, F.
Page(s): 21- 26
Digital Object Identifier 10.1109/AUTOID.2005.24"
