(Top) Scoring surface functions in the space and (bottom) SVS selection regions in the space , where each method among STAPLE (red), Vote (blue), and SBA (green) gives the highest score, for (a) SVS-2D, (b) SVS-3D, and (c) SVS-2D&3D. The bottom images correspond to the top views of the surfaces presented above. The overlaid scatter plot represents the values of the tests for each SVS version’s training set.