Live-Wire Revisited

The live-wire approach is an interactive, contour-based segmentation technique. Generally, the contour of a targeted object (anatomical structure) is built by interactively selecting control points and finding minimal-cost paths between them. By its very nature, this method is applicable only to 2D images. For the segmentation of 3D datasets (volumes), the interactive generation of live-wire contours has to be applied to each slice of the volume. This process can be quite tedious, due to the sometimes intensive user interaction. In this contribution, we propose adaptive propagation as an alternative to individually processing all image slices or shape-based interpolation of live-wire contours.