Colin, First, assign your medial wall nodes to a paint (label) identity. If you haven't done this already, it can be done using Draw Borders and filling in the ROI, starting with a very inflated or spherical surface. If you have crossovers in your medial wall, this might take some futzing and an extra round, but I think it can be made to work.
Then use Surface: Surface ROI: Node Selection: Paint, and select the medial wall nodes, but starting with the midthickness configuration in the main window. Then use ROI Operation: Smoothing, and choose parameters that yield adequate smoothing. If you have crossovers initially, you can probably re-inflate and re-project to the sphere starting with the partially smoothed medial wall. Good luck. David On Jul 20, 2012, at 5:06 PM, Colin Reveley wrote: > Is it possible to inflate just part of a surface? I doubt it. > > I am experiencing my usual agony in smoothing the medial wall of my surfaces. > as you can see, the medial wall region is very complicated and hard to make > into a smooth sheet, with big convexities, big concavities, and loads of > smaller ones. > > Actually I can't even make a crossover free sphere from this one. > > yes, I can change my segmentation by hand. but at the risk of losing > accuracy. altering the segmentation is normally what I do. aside from being a > bit dodgy, it's also very laborious. > > another way is to smooth it piecemeal, but this example is probably too far > gone for that. > > can't I just suck those nodes out of there?! > > best, > > Colin > <capture.jpg>_______________________________________________ > caret-users mailing list > [email protected] > http://brainvis.wustl.edu/mailman/listinfo/caret-users _______________________________________________ caret-users mailing list [email protected] http://brainvis.wustl.edu/mailman/listinfo/caret-users
