Using Wavelet-Based Contourlet Transform Illumination Normalization for Face Recognition
Long Binh Tran, Thái Hoàng Lê · International Journal of Modern Education and Computer Science · 2015
Evidently, the results of a face recognition system can be influenced by image illumination conditions.Regarding this, the authors proposed a system using wavelet-based contourlet transform normalization as an efficient method to enhance the lighting conditions of a face image.Particularly, this method can sharpen a face image and enhance its contrast simultaneously in the frequency domain to facilitate the recognition.The achieved results in face recognition tasks experimentally performed on Yale Face Database B have demonstrated that face recognition system with wavelet-based contourlet transform can perform better than any other systems using histogram equalization for its efficiency under varying illumination conditions.