[1] L. Jiang, C. Zhao, and Q. Wang, Chin. J. Lasers (in Chinese) 31, 81 (2004).

[2] P. Soille and H. Talbot, IEEE Trans. Pattern Analysis and Machine Intelligence 23, 1313 (2001).

[3] M. Qu, F. Y. Shih, J. Jing, and H. Wang, Solar Physics 228, 119 (2005).

[4] M. Heath, S. Sarkar, T. Sanocki, and K. Bowyer, Computer Vision and Image Understanding 69, 38 (1998).

[5] L. Jiang, D. Ren, and X. Lu, Chin. Opt. Lett. 1, 689 (2003).

[6] M. Pesaresi and J. A. Benediktsson, IEEE Trans. Geosciences Remote Sensing 39, 309 (2001).