[1] Jalkis J A. Three dimensional inspection using multistripe structured light. Opt. Engng., 1985, 24(6): 966~1002
[2] Tsai P S, Shah M. Shape from shading using linear approximation. Image and V ision Computing J., 1994, 12(8): 487~498
[3] Bichsel M, Pentland A P. A simple algorithm for shape from shading. I EEE Proc. Computer V ision and Pattern Recognition, Champaign, IL,USA, 1992. 459~465
[7] Murali Subbarao, Tae Choi. Accurate recovery of three-dimensional shape from image focus. I EEE Trans. Pattern A nalysis and Machine Intelligence, 1995, 17(3): 266~274