[1] Connell J H; Ratha N K; Bollc R M. Fingerprint image enhancement using weak models. International Conference of Image Processing; 2002; 1: 45-48

[2] Lin H; Anil J; Sharath P; et al. Fingerprint enhancement. IEEE Workshop on Applications of Computer Vision Proceedings; 1996; 202-207

[3] Jiang X D; Yao W Y; Ser W. Minutiae extraction by adaptive tracing the gray level ridge of the fingerprint image. IEEE International Conference on Image Processing; 1999;2: 852-856

[4] Saatci E; Tavsanoglu V. Fingerprint image enhancement using CNN Gabor-type filters. Proceedings of the 2002 7th IEEE International Workshop on Cellular Neural Natworks and Their Applications; 2002: 377-382

[5] Sherlock B G; Monro D M; Millard K. Fingerprint enhancement by directional Fourier filtering. Proceedings IEEE of the: Image and Signal Processing; 1994; 141(2): 87-94

[6] Toshio K; Masanori M. Image filter design for fingerprint enhancement. Proceedings of the IEEE International Symposium on Computer Vision; 1995: 109-114

[7] Kasaei S; Deriche M; Boashash B. Fingerprint Feature Extraction Using Block Direction on Reconstructed Images. IEEE TENCON'97; 1997; 1: 303-306

[8] Geman S; Geman D. Stochastic Relaxation Gibbs distributions and the Bayesian restoration of images. IEEE Trans. Pattern Anal. Mach. Intell; 1984; 6: 721-741

[9] Farag A A; Delp E J. Edge linking by sequential search. Pattern Recognition; 1995;28(5): 611-633