JISE


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Journal of Information Science and Engineering, Vol. 27 No. 1, pp. 369-380


A Novel Scheme for Face Recognition and Authentication Against Pose, Illumination and Expression Changes


YING-NONG CHEN1, CHIN-CHUAN HAN2, CHENG-TZU WANG3 AND KUO-CHIN FAN1 
1Department of Computer Science and Information Engineering 
National Central University 
Taoyuan, 320 Taiwan 
2Department of Computer Science and Information Engineering 
National United University 
Miaoli, 360 Taiwan 
3Department of Computer Science 
National Taipei University of Education 
Taipei, 106 Taiwan 
E-mail: cchan@nuu.edu.tw


    In this paper, a novel scheme for face recognition or authentication is proposed against pose, illumination, and expression (PIE) variation using modular face features. A sub-image in low-frequency sub-band is extracted by a wavelet transform (WT) to reduce the image dimensionality. It is partitioned into four parts for representing the local features and reducing the PIE effects, and the small image in a coarse scale is generated via the WT without losing the global face features. Five modular feature spaces were constructed. The most discriminative common vectors in each feature space were found, and a nearest feature space-based (NFS-based) distance was calculated for classification. Finally, a weighted summation is performed to fuse the five distances. Experiments were conducted to show that the proposed scheme is superior to other methods in terms of recognition and authentication rates.


Keywords: discrete wavelet transform, face recognition, face authentication, linear discriminant analysis, discriminative common vectors

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