T. Vaudrey, C. Rabe, R. Klette, и J. Milburn. Image and Vision Computing New Zealand, 2008. IVCNZ 2008. 23rd International Conference, стр. 1-6. (2008)
J. Barron, D. Fleet, S. Beauchemin, и T. Burkitt. Computer Vision and Pattern Recognition, 1992. Proceedings CVPR '92., 1992 IEEE Computer Society Conference on, стр. 236-242. (1992)