Face recognition by generalized two-dimensional FLD method and multi-class support vector machines

  • Authors:
  • Shiladitya Chowdhury;Jamuna Kanta Sing;Dipak Kumar Basu;Mita Nasipuri

  • Affiliations:
  • Department of Master of Computer Application, Techno India, EM-4/1, Sector V, Salt Lake, Kolkata 700 091, India;Department of Computer Science & Engineering, Jadavpur University, 188, Raja S. C. Mullick Road, Kolkata, West Bengal 700 032, India;Department of Computer Science & Engineering, Jadavpur University, 188, Raja S. C. Mullick Road, Kolkata, West Bengal 700 032, India;Department of Computer Science & Engineering, Jadavpur University, 188, Raja S. C. Mullick Road, Kolkata, West Bengal 700 032, India

  • Venue:
  • Applied Soft Computing
  • Year:
  • 2011

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Abstract

This paper presents a novel scheme for feature extraction, namely, the generalized two-dimensional Fisher's linear discriminant (G-2DFLD) method and its use for face recognition using multi-class support vector machines as classifier. The G-2DFLD method is an extension of the 2DFLD method for feature extraction. Like 2DFLD method, G-2DFLD method is also based on the original 2D image matrix. However, unlike 2DFLD method, which maximizes class separability either from row or column direction, the G-2DFLD method maximizes class separability from both the row and column directions simultaneously. To realize this, two alternative Fisher's criteria have been defined corresponding to row and column-wise projection directions. Unlike 2DFLD method, the principal components extracted from an image matrix in G-2DFLD method are scalars; yielding much smaller image feature matrix. The proposed G-2DFLD method was evaluated on two popular face recognition databases, the AT&T (formerly ORL) and the UMIST face databases. The experimental results using different experimental strategies show that the new G-2DFLD scheme outperforms the PCA, 2DPCA, FLD and 2DFLD schemes, not only in terms of computation times, but also for the task of face recognition using multi-class support vector machines (SVM) as classifier. The proposed method also outperforms some of the neural networks and other SVM-based methods for face recognition reported in the literature.