[1] Zhang D. Automated Biometrics: Technologies And Systems [M]. Norwell,MA,USA:Kluwer,2000:25-48.

[2] Daugman J G. How iris recognition works [J]. IEEE Trans. on Circuits and System for Video Technology(S1051-8215),2004,14(1):21-30.

[3] Daugman J G. Probing the uniqueness and randomness of iris codes: results from 200 billion iris pair comparisons [J].Proceedings of the IEEE(S0018-9219),2006,94(11):1927-1935.

[4] Wildes R P. Iris recognition: an emerging biometric technology [J]. Proceedings of the IEEE(S0018-9219),1997,85(9):1348-1363.

[5] Ma L,Tan T N,Wang Y H,et al. Efficient iris recognition by characterizing key local variations [J]. IEEE Trans. on Image Processing(S1057-7149),2004,13(6):739-750.

[6] Chu C T,Chen C H. High performance iris recognition based on LDA and LPCC [C]// 17th IEEE International Conference on Tools with Artificial Intelligence,Hong Kong Univ. Sci. & Technol,Hong Kong,Nov 14-16,2005. CA,USA:IEEE Computer Soc,2005:417-421.

[7] Wu Y,Feng G. An iris recognition algorithm based on DCT [J]. Microcomputer Information(S1008-0570),2007,25(9):270-208.

[8] Masek L. Recognition of human iris patterns for biometric identification [ED/OL]. (2003-12) [2006-10]. http://www.csse.uwa.edu.au/~pk/studentprojects/libor/.

[9] Gonzalez R C,Woods R E. Digital Image Processing: Second Edition [M]. Beijing:Publishing house of electronics industry,2002:519-566.

[10] Center for Biometrics and Security Research. CASIA Iris Image Database [EB/OL]. (2003-12) [2006-10]. http://www.sinobiometrics.com/casiairis.html