International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 75 - Number 7 |
Year of Publication: 2013 |
Authors: Prachi Agarwal, Naveen Prakash |
10.5120/13125-0481 |
Prachi Agarwal, Naveen Prakash . Modular Approach for Face Recognition System using Multilevel Haar Wavelet Transform, Improved PCA and Enhanced Back Propagation Neural Network. International Journal of Computer Applications. 75, 7 ( August 2013), 29-36. DOI=10.5120/13125-0481
With rapidly developing technology, it is important to invent an efficient and effective security system that will help to detect unauthorized access on any system. Hence it is essential necessary to implement a highly secure, economic and reliable face recognition system to enable the protection of computer systems from unauthorized access. So, in this paper a fast efficient approach is proposed for the recognition of human faces. Thus, firstly Haar wavelet transform is implemented for multilevel decomposition of face image into several subband images. The decomposed image subbands are then used as input by Improved Principal Component Analysis (IPCA) approach for extracting features with the help of eigenvalues and Eigen vectors. Then classification of features using Back Propagation Neural Network (BPNN) is done and finally image is being recognized comparing it to the testing images existing in the images database. More efficient BPNN is used to improve the recognition rate and to overcome the problems associated with variations in illumination and poses. Thus feed forward neural network shows the effectiveness of the proposed algorithm.