Kernel based symmetrical principal component analysis for face classification

  • Authors:
  • Congde Lu;Chunmei Zhang;Taiyi Zhang;Wei Zhang

  • Affiliations:
  • School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 610054, PR China;Department of Information and Communication Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China;Department of Information and Communication Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China;School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA

  • Venue:
  • Neurocomputing
  • Year:
  • 2007

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Abstract

Kernel method is a powerful technique in machine learning and it has been widely applied to feature extraction and classification. Symmetrical principal component analysis (SPCA) is an excellent feature extraction method for face classification because it utilizes the symmetry of the facial images. This paper presents one Kernel based SPCA (KSPCA) algorithm which gives the closed form for polynomial kernel. KSPCA combines advantages of SPCA with kernel method, i.e., KSPCA not only makes use of the symmetry of the facial images, but also extracts nonlinear principal components which contain more abundant information. We compare the performance of SPCA, kernel PCA (KPCA) with KSPCA on CBCL database for binary classification, and on ORL and Yale face database for multi-category classification, respectively. The experimental results show that KSPCA outperforms both SPCA and KPCA.