Discriminant Non-negative Matrix Factorization and Projected Gradients for Frontal Face Verification.

Irene Kotsia Stefanos Zafeiriou Ioannis Pitas Discriminant Non-negative Matrix Factorization and Projected Gradients for Frontal Face Verification. 82-90 2008 BIOID http://dx.doi.org/10.1007/978-3-540-89991-4_9 conf/bioid/2008 db/conf/bioid/bioid2008.html#KotsiaZP08