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Published Articles >> Table of Contents >> Abstract
November 1993 (Vol. 15, No. 11)
pp. 1131-1147
Finite-Element Methods for Active Contour Models and Balloons for 2-D and 3-D Images
L.D. Cohen
I. Cohen
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/34.244675
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| Abstract |
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The use of energy-minimizing curves, known as "snakes" to extract features of interest in images has been introduced by Kass, Witkin and Terzopoulos (1987). A balloon model was introduced by Cohen (1991) as a way to generalize and solve some of the problems encountered with the original method. A 3-D generalization of the balloon model as a 3-D deformable surface, which evolves in 3-D images, is presented. It is deformed under the action of internal and external forces attracting the surface toward detected edgels by means of an attraction potential. We also show properties of energy-minimizing surfaces concerning their relationship with 3-D edge points. To solve the minimization problem for a surface, two simplified approaches are shown first, defining a 3-D surface as a series of 2-D planar curves. Then, after comparing finite-element method and finite-difference method in the 2-D problem, we solve the 3-D model using the finite-element method yielding greater stability and faster convergence. This model is applied for segmenting magnetic resonance images.
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References
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Additional Information
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Index Terms- active contour models; 3D images; energy-minimizing curves; balloon model; 3D deformable surface; attraction potential; minimization; 2D planar curves; finite-element method; magnetic resonance image segmentation; edge detection; feature extraction; finite element analysis; minimisation
Citation:
L.D. Cohen, I. Cohen,
"Finite-Element Methods for Active Contour Models and Balloons for 2-D and 3-D Images,"
IEEE Transactions on Pattern Analysis and Machine Intelligence,
vol. 15,
no. 11,
pp. 1131-1147,
Nov.,
1993
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