[1] Jain A K，Flynn P，Ross A A. Handbook of Biometrics [M]. Springer，2007.

[2] Matey J R，Kennell L R. Iris Recognition-Beyond One Meter [M]// Handbook of Remote Biometrics, Advances in Pattern

     Recognition. London：Springer，2009：23.

[3] Matey J R，Broussard R，Kennell L. Iris image segmentation and sub-optimal images [J]. Image and Vision Computing(S0262-8856)，2010，28：215-222.

[4] Bowyer K W，Hollingsworth K P，Flynn P J. Image understanding for iris biometrics: a survey [J]. Computer Vision and

     Image Understanding(S1077-3142)，2008，110(2)：281-307.

[5] Daugman J. High confidence visual recognition of persons by a test of statistical independence [J]. IEEE Trans. Pattern Anal.Mach. Intell(S0162-8828)，1993，15(11)：1148-1161.

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

     1348-1363.

[7] Hollingsworth K P，Bowyer K W. The best bits in an iris code [J]. IEEE Trans. Pattern Anal. Mach. Intell(S0162-8828)，

     2009，31(6)：964-973.

[8] IEEE Workshop on Automatic Identification Advanced Technologies，Buffalo，NY，USA，Oct 17-18，2005：239-244.

     Abhyankar A，Hornak L，Schuckers S. Off-angle iris recognition using bi-orthogonal wavelet network system [C]// Fourth

[9] Daugman J. New methods in iris recognition [J]. IEEE Trans. Syst. Man Cyber(S1083-4419)，2007，37(5)：1167-1175.