A Charged Active Contour Based on Electrostatics
We propose a novel active contour model by incorporating particle based electrostatic interactions into the geometric active contour framework. The proposed active contour, embedded in level sets, propagates under the joint influence of a boundary attraction force and a boundary competition force. Unlike other contour models, the proposed vector field dynamically adapts by updating itself when a contour reaches a boundary. The model is then more invariant to initialisation and possesses better convergence abilities. Analytical and comparative results are presented on synthetic and real images.
KeywordsActive Contour Object Boundary Active Contour Model Strong Edge Weak Edge
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- 2.Caselles, V., Kimmel, R., Sapiro, G.: Geodesic active contours. In: ICCV, pp. 694–699 (1995)Google Scholar
- 3.Zhu, S., Yuille, A.: Region competition: Unifying snakes, region growing, and Bayes/MDL for multiband image segmentation. IEEE T-PAMI 18, 884–900 (1996)Google Scholar
- 4.Paragios, N., Deriche, R.: Geodesic active regions for supervised texture segmentation. In: ICCV, pp. 926–932 (1999)Google Scholar
- 6.Xu, C., Prince, J.: Gradient vector flow: a new external force for snakes. In: CVPR, pp. 66–71 (1997)Google Scholar
- 7.Paragios, N., Mellina-Gottardo, O., Ramesh, V.: Gradient vector flow fast geodesic active contours. IEEE T-PAMI 26, 402–407 (2004)Google Scholar
- 8.Jalba, A., Wilkinson, M., Roerdink, J.: CPM: A deformable model for shape recovery and segmentation based on charged particles. IEEE T-PAMI 26, 1320–1335 (2004)Google Scholar
- 9.Sethian, J.: Level Set Methods: Evolving Interfaces in Geometry, Fluid Mechanics, Computer Vision, and Materials Science. CUP (1996)Google Scholar