Unified locally linear embedding and linear discriminant analysis algorithm (ULLELDA) for face recognition

Authors:
Junping Zhang;Huanxing Shen;Zhi-Hua Zhou
Affiliations:
Intelligent Information Processing Laboratory, Fudan University, Shanghai, China;School of Software, Fudan University, Shanghai, China;National Laboratory for Novel Software Technology, Nanjing University, Nanjing, China
Venue:
SINOBIOMETRICS'04 Proceedings of the 5th Chinese conference on Advances in Biometric Person Authentication
Year:
2004

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Abstract

Manifold learning approaches such as locally linear embedding algorithm (LLE) and isometric mapping (Isomap) algorithm are aimed to discover the intrinsical low dimensional variables from high-dimensional nonlinear data While, in order to achieve effective recognition tasks based on manifold learning, many problems remain to be solved In this paper, we propose unified algorithm based on LLE and linear discriminant analysis (ULLELDA) for those remained problems First, training samples are mapped into low-dimensional embedding space and then LDA algorithm is used to project samples into discriminant space for enlarging between-class distances and decreasing within-class distance Second, the unknown samples are directly mapped into discriminant space without the computation of the corresponding one in the low-dimensional embedding space Experiments on several face databases show the advantages of the proposed algorithm.