Face recognition using Gabor-based direct linear discriminant analysis and support vector machine

Authors:
Saeed Meshgini;Ali Aghagolzadeh;Hadi Seyedarabi
Affiliations:
Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran;Faculty of Electrical and Computer Engineering, Babol University of Technology, Babol, Iran;Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Venue:
Computers and Electrical Engineering
Year:
2013

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Abstract

This paper presents a novel and uniform framework for face recognition. This framework is based on a combination of Gabor wavelets, direct linear discriminant analysis (DLDA) and support vector machine (SVM). First, feature vectors are extracted from raw face images using Gabor wavelets. These Gabor-based features are robust against local distortions caused by the variance of illumination, expression and pose. Next, the extracted feature vectors are projected to a low-dimensional subspace using DLDA technique. The Gabor-based DLDA feature vectors are then applied to SVM classifier. A new kernel function for SVM called hyperhemispherically normalized polynomial (HNP) is also proposed in this paper and its validity on the improvement of classification accuracy is theoretically proved and experimentally tested for face recognition. The proposed algorithm was evaluated using the FERET database. Experimental results show that the proposed face recognition system outperforms other related approaches in terms of recognition rate.