[1] [1] J. F. Blinn, Computer Graphics 11, (2) 192 (1977).

[2] [2] S.-Y. Cho and T. W. S. Chow, Neural Computation 14, 2751 (2002).

[3] [3] S. K. Nayar, K. Ikeuchi, and T. Kanade, IEEE Trans. Pattern Analysis and Machine Intelligence 13, 611 (1991).

[4] [4] G. Bishop and D. M. Weimer, Computer Graphics 20, (4) 103 (1986).

[5] [5] G. J. Ward, Computer Graphics 26, (2) 265 (1992).

[6] [6] K. M. Lee and C.-C. J. Kuo, Computer Vision and Image Understanding 67, 143 (1997).

[7] [7] Q. Zheng and R. Chellappa, IEEE Trans. Pattern Analysis and Machine Intelligence 13, 680 (1991).

[8] [8] S.-Y. Cho and T. W. S. Chow, IEEE Trans. Neural Networks 11, 1498 (2000).

[9] [9] H. D. Tagare and R. J. P. deFigueiredo, IEEE Trans. Pattern Analysis and Machine Intelligence 13, 133 (1991).

[10] [10] C.-T. Lin, W.-C. Cheng, and S.-F. Liang, IEEE Trans. Neural Networks 16, 1601 (2005).

[11] [11] X. Wu, D. Guo, and X. Wang, Computer Engineering and Applications (in Chinese) 24, (19) 23 (2001).

[12] [12] S. R. Marschner, S. H. Westin, E. P. F. Lafortune, and K. E. Torrance, Appl. Opt. 39, 2592 (2000).

[13] [13] R. Basri and D. W. Jacobs, IEEE Trans. Pattern Analysis and Machine Intelligence 25, 218 (2003).

[14] [14] P. Lalonde and A. Fournier, IEEE Trans. Visualization and Computer Graphics 3, 329 (1997).

[15] [15] W. Matusik, H. Pfister, M. Brand, and L. McMillan, ACM Trans. Graphics 22, 759 (2003).

[16] [16] R. Zhang, P.-S. Tsai, J. E. Cryer, and M. Shah, IEEE Trans. Pattern Analysis and Machine Intelligence 21, 690 (1999).

[17] [17] L. Yang and J. Han, Chin. Opt. Lett. 5, 204 (2007).

[18] [18] B. T. Phong, Communications of the ACM 18, 311 (1975).