1. B. K. P. Horn, “Focusing,” Artificial Intelligence Memo 160, MIT (May 1968).
2. Focusing
3. G. Lighthart and F. Groen, “A comparison of different autofocus algorithms,” inInt. Conf. on Pattern Recognition, pp. 597–600 (1982).
4. S. Nayar, “Shape from focus system for rough surfaces,” inProc. IEEE Computer Soc. Conf. on Computer Vision and Pattern Recognition, pp. 302–308 (1992).
5. Focusing techniques