Title: Two-dimensional exponential discriminant analysis for small sample size in face recognition

Authors: Nitin Kumar; R.K. Agrawal

Addresses: Department of Computer Science and Engineering, National Institute of Technology, Uttarakhand, Srinagar Garhwal, India ' School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi, India

Abstract: Appearance-based face recognition methods usually require converting 2D face images to 1D column vectors. Due to high dimensionality and few available samples, the performance becomes unsatisfactory. In this paper, we propose a novel technique called two-dimensional exponential discriminant analysis (2DEDA) which extracts important features for classification directly from 2D face images. 2DEDA is especially suitable when the available sample size is small. Experimental results on two publicly available datasets viz. AR and CMU-PIE demonstrate the efficacy of the proposed technique, outperforming two-dimensional principal component analysis (2DPCA) and two-dimensional linear discriminant analysis (2DLDA). The performance of the algorithms is evaluated in terms of average classification accuracy.

Keywords: exponential discriminant analysis; 2D EDA; face recognition; small sample size; scatter matrices; illumination; biometrics; feature extraction; principal component analysis; PCA; linear discriminant analysis; LDA; classification accuracy.

DOI: 10.1504/IJAISC.2016.078489

International Journal of Artificial Intelligence and Soft Computing, 2016 Vol.5 No.3, pp.194 - 208

Received: 31 Jan 2015
Accepted: 07 Jul 2015
Published online: 22 Aug 2016 *

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