title: Gradient vector flow fast geometric active contours.
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 and the gradient vector flow external force for snakes. The resulting motion equation is considered within a level set formulation, 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. Promising results on real and synthetic images demonstrate the potentials of the flow.
authors.affiliation: Siemens Corporate Research, Real-Time Vision and Modeling Department, 755 College Road East, Princeton, NJ 08540, USA. nikos@scr.siemens.com
authors.forename: Nikos
authors.initials: N
authors.lastname: Paragios
authors.forename: Olivier
authors.initials: O
authors.lastname: Mellina-Gottardo
authors.forename: Visvanathan
authors.initials: V
authors.lastname: Ramesh
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D003196:Computer Graphics; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods*; D009716:Numerical Analysis, Computer-Assisted; D010363:Pattern Recognition, Automated; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D013382:Subtraction Technique