Intelligent Scissors

Selected frames from an example live-wire segmentation where both the object boundary extracted and the background are complex. The red dots are seed points, the green crosshair is the free point, the blue contour segments correspond to portions of the "set" boundary, and the yellow contour segment is the live-wire boundary segment. (Top) Selected frames from the last couple of seconds of the process. (Bottom) The final object boundary contains 2348 pixels. (Image size 640 x 420)

(Left) Image of bighorn sheep that contains regions with similar color as that of the backround. (Right) Resulting live-wire boundary (in yellow) using Intelligent Scissors required 46.3 s (1883 boundary pixels).