［3］Kamei T, Mizoguchi M. Image filter design for fingerprint enhancement [A]. In: Proceedings of ISVC\'95 [C], Coral Gables, Florida, USA, 1995: 109～114.
[2]
［5］O\'Gorman L, Neckerson J V. An approach to fingerprint filter design[J]. Pattern Recognition, 1989, 22(1): 29～38.
[3]
［7］Danielsson P E, Ye Q Z. Rotation-invariant operators applied to enhancement of fingerprints [A]. In: Proceedings of 8th International Conference on Pattern Recognition [C], Rome,Italy, 1998: 329～333.
[4]
［9］Sherstinsky A, Picard R W. Restoration and enhancement of fingerprint images using M-lattice: A novel non-linear dynamical system[A]. In: Proceedings of 12th, International Conference on Pattern Recognition-B [C], Jerusalem, Palestine, 1994:195～200.
[5]
［10］Hung D C D. Enhancement feature purification of fingerprint images[J]. Pattern Recognition, 1993, 26(11): 1661～1671.
[6]
［12］Berson J. Dynamic thresholding of grey-level images[A]. In:Proceedings of 8th International Conference on Pattern Recognition[C], Paris, France, 1986: 1251～1255.
［2］Hong L, Wan Y, Jain A K. Fingerprint image enhancement:algorithm and performance evaluation[J]. IEEE Transactions on PAMI, 1998, 20(8): 777～789.
[9]
［4］Sherlock D, Monro D M, Millard K. Fingerprint enhancement by directional fourier filter[J]. IEE Proceedings of Visual Image Signal Processing, 1994, 141(2): 87～94.
[10]
［6］Lin W C, Dubes R C. A review of ridge counting in dermatoglyphics[J]. Pattern Recognition, 1983, 16(2): 1～8.
[11]
［8］Coetzee L, Botha E C. Fingerprint recognition in low quality images[J]. Pattern Recognition, 1993, 26(10): 1441～1460.
[12]
［11］Kovacs-Vajna Z M, Rovatti R, Frazzoni M. Fingerprint ridge distance computation methodologies [J]. Pattern Recognition,2000, 33(4): 69～80.
