References

[1] M. Kass, A. Witkin, and D. Terzopoulos, "Snakes: Active contour models." International Journal of Computer Vision. v. 1, n. 4, pp. 321-331, 1987.


[2] D. Williams and M. Shah. "A Fast Algorithm for Active Contours and Curvature Estimation", CVGIP: Image Understanding. Vol. 55, No. 1, January 1992. pp. 14-26.


[3] C. Xu and J. L. Prince, ``Snakes, Shapes, and Gradient Vector Flow,'' IEEE Transactions on Image Processing, 7(3), pp. 359-369, March 1998.