Figure 3

Level set evolutions of the GAC, DRSLE, and ARLS models[23, 25, 28]. Initial zero-level contours of the given image for GAC and DRSLE (a), initial level set function with a signed distance function (b), final zero-level contour of the given image for the GAC model (c), initial level set function with a binary function (d), final zero-level contour of the given image for the DRSLE model (e), initial level set function with a constant function (f), and final zero-level contour of the given image for the ARLS model (g). Note that the given image can be segmented, if the level set function is re-initialized properly for the GAC model.