[1] [1] Kass M, Witkin A. Analyzing oriented patterns [J]. Computer Vision, Graphics, and Image Processing, 1987, 37(2): 362-385.

[2] [2] Karu K, Jain A K. Fingerprint classification [J]. Pattern Recognition, 1996, 29(3): 389-404.

[4] [4] Bazen A M, Gerez S H. Systematic methods for the computation of the directional fields and singular points of fingerprints [J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2002, 24(7): 909-919.

[5] [5] Vizcaya P R, Gerhardt L A. Multi-resolution fuzzy approach for singularity in fingerprint images [C]. Proce. of SPIE, 1997, 2935: 46-56.

[6] [6] Kawagoe M, Tojo A. Fingerprint pattern classification [J]. Pattern Recognition, 1984, 17(3): 295-303.

[7] [7] Kameswara R C V, Kenneth B. Finding the core point in a fingerprint [J]. IEEE Transactions on Computers, 1978, 27(1): 77-82.

[8] [8] Rahimi M R, Pakbaznia E, Kasaei S. An adaptive approach to singular point detection in fingerprint images [J]. International Journal of Electronics and Communications, 2004, 58(5): 367-370.

[9] [9] Chang T L. Texture analysis of digitized fingerprints for sinularity detection [C]. IEEE Proce. of 5th International Conference on Pattern Recognition, Vol 1 and 2, 1980.

[10] [10] Srinivasan V S, Murthy N N. Detection of singularity points in fingerprint images [J]. Pattern Recognition, 1992, 25(2): 139-153.

[11] [11] Sherlock B G, Monro D M. A model for interpreting fingerprint topology [J]. Pattern Recognition, 1993, 26(7): 1047-1055.

[12] [12] Rosten E, Drummond T. Fusing points and lines for high performance tracking [C]. Proce. of IEEE International Conference on Computer Vision, 2005, 2: 1508-1511.

[13] [13] Rosten E, Drummond T. Machine learning for high-speed corner detection [C]. Proceedings of European Conference on Computer Vision, 2006.

[14] [14] Steven. http://blogs.mathworks.com/steve/2007/05/25/connected-component-labeling-part-6 [OL]. 2007.

[15] [15] Maio D, Maltoni D, Cappelli R, et al. FVC2000: fingerprint verification competition [J]. IEEE Transaction on Pattern Analysis Machine Intelligence, 2002, 24(3): 402-412.

[16] [16] Maio D, Maltoni D, Cappelli R, et al. FVC2002: second fingerprint verification competition [C]. Proce. of 16th International Conference of Pattern Recognition, 2002, 3: 811-814.