Comparison of eigenface-based feature vectors under different impairments

We study the performance of a new eigenface-based method for face recognition. Specifically, we perform DCT preprocessing followed by the PCA-LDA combination. We compare the new method to existing ones (PCA, PCA-LDA, DCT-PCA) under impairments like changes in brightness, direction-of-illumination, hairstyle, clothing, expression, head orientation, and added noise. In this paper feature extraction methods are outlined. The results are obtained using two different face databases: the Aberdeen database from University of Stirling and the ORL database from University of Cambridge.