Scheming an efficient facial recognition system using global and random local feature extraction methods

Abstract

Face recognition is considered as one of the relatively new and interesting concepts in the area of biometrics and comprises a huge number of applications. This study involves implementation of a robust recognition system by employing global and random local facial features of an individual. The proposed scheme considers the extraction of global facial features and some randomly selected local facial features. In order to exploit global information of a whole face image, Principal Component Analysis (PCA) algorithm is used. On the other hand, the randomly selected sub-images of a whole face image are concatenated and subsequently PCA is applied on the concatenated regions. In addition, the proposed scheme involves the optimization of random sub-image locations and sizes by considering different settings and choosing the most optimized one. Finally, Weighted Sum Rule fusion is employed to combine the calculated scores of the global and local feature extractors. The reliability of the proposed facial recognition system is investigated on several data sets of ORL, FERET, and Extended Yale face databases. Demonstration of results based on the recognition performance and ROC analysis clarifies that the proposed scheme achieves a considerable improvement compared to the global and local feature extractors implemented in this study.