Guidelines for choosing optimal parameters of elasticity for snakes
This paper proposes a guidance in the process of choosing and using the parameters of elasticity of a snake in order to obtain a precise segmentation. A new two step procedure is defined based on upper and lower bounds on the parameters. Formulas, by which these bounds can be calculated for real images where parts of the contour may be missing, are presented. Experiments on segmentation of bone structures in X-ray images have verified the usefulness of the new procedure.
Unable to display preview. Download preview PDF.
- 1.I. Cohen, L. D. Cohen and N. Ayache, ”Using Deformable Surfaces to Segment 3-D Images and Infer Differential Structures”, CVGIP: IMAGE UNDERSTANDING, Vol.56, No.2, September, pp.242–263, 1992.Google Scholar
- 2.M. Kass, A. Witkin and D. Terzopoulos, ”Snakes: Active Contour Models,” Proc. of Intern. Conf. on Comp. Vision, pp.259–268, London, 1987.Google Scholar
- 3.O. V. Larsen, P. Radeva and E. Martí, ”Calculating the Bounds on the Optimal Parameters of Elasticity for a Snake”, Technical report, Aalborg University, Laboratory of Image Analysis, Denmark, December, 1994.Google Scholar
- 4.O. V. Larsen, P. Radeva and E. Martí, ”Bounds on the Optimal Elasticity Parameters for a Snake”, Proceedings from 8th International Conference on Image Analysis and Processing, San Remo, Italy, 1995 (accepted).Google Scholar
- 5.R. Samadani, ”Adaptive Snakes: Control of Damping and Material Parameters”, SPIE Geometric Methods in Computer Vision, vol. 1570, 1991.Google Scholar