This paper proposes a new front propagation flow for boundary extraction. The proposed framework is inspired by the geodesic active contour model and leads to a paradigm that is relatively free from the initial curve position. Towards this end, it makes use of a recently introduced external boundary force, the gradient vector field that refers to a spatial diffusion of the boundary information. According to the proposed flow, the traditional boundary attraction term is replaced with a new force that guides the propagation to the object boundaries from both sides. This new geometric flow is implemented using a level set approach, thereby allowing dealing naturally with topological changes and important shape deformations. Moreover the level set motion equations are implemented using a recently introduced numerical approximation scheme, the Additive Operator Splitting Schema (AOS) which has a fast convergence rate and stable behavior. Encouraging experimental results are provided using real images.
Gradient vector flow fast geodesic active contours
01.01.2001
816880 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Gradient Vector Flow Fast Geodesic Active Contours
British Library Conference Proceedings | 2001
|IEEE | 1995
|British Library Online Contents | 1997
|British Library Conference Proceedings | 1995
|Globally Optimal Geodesic Active Contours
British Library Online Contents | 2005
|