Learning the discriminative dictionary for sparse representation by a general fisher regularized model

This paper presents two novel discriminative dictionary learning models for sparse representation, namely the Fisher discriminative sparse model (FDSM) and the marginal Fisher discriminative sparse model (MFDSM). To learn the FDSM and the MFDSM efficiently and homogeneously, a general Fisher regularized model is further derived so that both of them can be learned without much modification. Experimental results on four popular databases, namely the extended Yale face database B, the AR face database, the 15 scenes dataset and the MIT-67 indoor scenes dataset show that the proposed method can improve upon other popular methods.