Abstract
Abstract—In this paper, we propose an edge-driven bidirectional geometric flow for boundary extraction. To this end, we combine the geodesic active contour flow [CHECK END OF SENTENCE] and the gradient vector flow external force for snakes [CHECK END OF SENTENCE]. The resulting motion equation is considered within a level set formulation [CHECK END OF SENTENCE], can deal with topological changes and important shape deformations. An efficient numerical schema is used for the flow implementation that exhibits robust behavior and has fast convergence rate [CHECK END OF SENTENCE], [CHECK END OF SENTENCE]. Promising results on real and synthetic images demonstrate the potentials of the flow.