1. A method for guiding an initialization of an image segmentation, comprising: identifying a region of interest (ROI) in an image, wherein the ROI includes a plurality of points; segmenting the image using every point inside the ROI as an initial point to produce a segmentation result for each point in the ROI; comparing the segmentation result of each point in the ROI to the segmentation result of every other point in the ROI to produce a consistency measure for each point in the ROI; assigning a degree of color to each point in the ROI based on its consistency measure, wherein the degree of color indicates whether or not the point is a good candidate for an initial point of an image segmentation; and displaying the image with different degrees of color in the ROI to provide a user with information as to where a segmentation of the image should be initialized.