The 3D Surfaceinterpolation must be integrated into the segmentation bundle.
The interpolation should be enabled via a checkbox. As soon as it is enabled the interpolation should be running in the background.
All neccessary informations which are required for the interpolation are gathered during the manual delineation of contours.
There should also be some kind of 3DInterpolationController which stores all the contour informations and starts the interpolation process as soon as there are two or more contours drawn by the user. This concept could be similar to the one use for SlicesInterpolation.