Discriminative information preservation for face recognition

Authors:
Dapeng Tao;Lianwen Jin
Affiliations:
School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, PR China;School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, PR China
Venue:
Neurocomputing
Year:
2012

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Abstract

It is usually difficult to find the optimal low dimensional subspace for face recognition. Patch alignment framework (PAF) is an important systematic framework that can be applied to understand the common thought and essential differences of a numerous dimensionality reduction algorithms, e.g., principal component analysis, linear discriminant analysis and locally linear embedding and ISOMAP. These algorithms do not consider the intra-class local geometry and the inter-class discrimination simultaneously. In this paper, we present a new dimensionality reduction algorithm based on PAF, termed the discriminative information preservation based dimensionality reduction or DIP for short. First, DIP models the local geometry of intra-class samples by using Locality preserving projection (LPP) rebuilt upon PAF. Second, it models the discriminative information of inter-class samples by maximizing the margin. Thoroughly experimental evidence on several public face datasets suggests the effectiveness of DIP compared with the popular algorithms.