[1] B. Zitová and J. Flusser, Image Vision Comput. 21, 977 (2003).

[2] X. Yang and J. Pei, Chin. Opt. Lett. 3, 510 (2005).

[3] F. Ye, L. Su, and S. Li, Chin. Opt. Lett. 4, 386 (2006).

[4] W. Aguilar, Y. Frauel, F. Escolano, M. E. Martinez-Perez, A. Espinosa-Romero, and M. A. Lozano, Image Vision Comput. (to be published).

[5] P. Dare and I. Dowman, ISPRS J. Photogramm. Remote Sens. 56, 13 (2001).

[6] M. Carcassoni and E. R. Hancock, Pattern Recogn. 36, 193 (2003).

[7] G. L. Scott and H. C. Longuet-Higgins, Proc. R. Soc. Lond. B 244, 21 (1991).

[8] L. S. Shapiro and J. M. Brady, Image Vision Comput. 10, 283 (1992).

[9] H. Wang and E. Hancock, Lecture Notes in Computer Science 3138, 361 (2004).

[10] S. Wold, H. Ruhe, H. Wold, and W. J. Dunn III, SIAM J. Sci. Sta. Comput. 5, 735 (1984).

[11] A. Hoskuldsson, J. Chemometr. 2, 211 (1988).

[12] Q.-S. Sun, Z. Jin, P.-A. Heng, and D.-S. Xia, Lecture Notes in Computer Science 3686, 268 (2005).

[13] P. J. Besl and N. D. McKay, IEEE Trans. Pattern Anal. Mach. Intell. 14, 239 (1992).

[14] Y. Wang, F. Makedon, J. Ford, and H. Huang, in Proceedings of the 26th Annual Int. Conf. IEEE EMBS 4, 2972 (2004).