[1] [1] A. Kumar and K. V. Prathyusha, IEEE Trans. Image Processing 18, 2127 (2009).

[2] [2] Y. Wang, T. Liu, and J. Jiang, Chin. Opt. Lett. 6, 657 (2008).

[3] [3] Q. Li, Y. Zeng, X. Peng, and K. Yang, Chin. Opt. Lett. 8, 577 (2010).

[4] [4] X. Yuan, in Proceedings of International Conference on Wireless Communications, Networking and Information Security 2010 (2010).

[5] [5] I. Sarkar, F. Alisherov, T. Kim, and D. Bhattacharyya, Int. J. Control Auto. 3, 27 (2010).

[6] [6] M. Khan, R. K. Subramanian, and N. A. M. Khan, World Academy of Science, Engineering and Technology, 49, 1001 (2009).

[7] [7] D. Tang, B. Huang, R. Li, and W. Li, in Proceedings of International Conference on Pattern Recognition 2010 (2010).

[8] [8] C. Lin and K. Fan, IEEE Trans. Circuits Syst. Video Technol. 14, 199 (2004).

[9] [9] C. L. Lin, T. C. Chuang, and K. C. Fan, Pattern Recognit. 38, 2639 (2005).

[10] [10] J. M. Reinhardt and W. E. Higgins, IEEE. Trans. Pattern Anal. Mach. Intell. 18, 951 (1996).

[11] [11] J. Lu, X.Yuan, and T. Yahagi, Signal Process. 86, 2026 (2006).

[12] [12] J. Lu, X.Yuan, and T. Yahagi, IEEE Trans. Neural Networks 18, 150 (2007).

[13] [13] X. Yuan, J. Lu, and T. Yahagi, IEEJ Trans. Electron. Inf. Syst. 125, 426 (2005).

[14] [14] X. Yuan, J. Lu, and T. Yahagi, IEEJ Trans. Electron. Inf. Syst. 126, 963 (2006).

[15] [15] X. Yuan, Y. Song, and X. Wei, Chin. Opt. Lett. 9, 021101 (2011).