[1]Kass M, Witkin A, Terzopoulos D. Snakes: active contour models[J]. Int\'l. J. Comp. Vis., 1987,1(4):321~331.
[2]
[3]Cohen L D. On active contour models and balloons[J]. CVGIP:Imag. Under. , 1991, 53(2):211~218.
[3]
[5]Lobregt S, Viergever M A. A discrete dynamic contour model [J]. IEEE Trans. on Med. Imag. , 1995, 14(1):12~24.
[4]
[2]Williams D J, Shah M. A fast algorithm for active contours and curvature estimation[J]. CVGIP:Imag. Under. , 1992,55(1):14~26.
[5]
[4]Miller J V, Reen D E, Lorensen W E et al. Geometrically deformed models: A method to extract dosed geometric models from volume data[J]. Comput. Graphics. , 1991, 25 (4): 217 ~226.
[6]
[6]Xu C, Prince J L. Snakes, shapes, and gradient vector flow[J].IEEE Trans. Imag. Proc., 1998, 7(3):359~369.