From the slicer-users mailing list...

Yes, the topic has come up before and it's a good idea.

As Greg mentioned in a previous thread [1], there is a tool in slicer3 called ModelDraw that implements something like this - you can see videos of how it works at [2]. This isn't in the 3.6.3 release, but it is in the most recent slicer3 nightly builds [3]. At this point there's no concrete plan for when or how this will be ported to slicer4, but I created a feature request in the bug tracker to help us keep track of these ideas [4]

-Steve

[1] http://slicer-users.65878.n3.nabble.com/How-to-copy-label-map-to-next-slice-in-Editor-td3741917.html

[2] https://dl.dropbox.com/u/1686930/IMAT-2011-09-23/index.html

[3] http://www.slicer.org/download_files/Nightly/

[4] http://www.na-mic.org/Bug/view.php?id=2322

On Mon, Jul 16, 2012 at 9:56 AM, Andras Lasso <lasso@cs.queensu.ca> wrote:
Contour copying or interpolation has been requested by many people. Probably people actually need interpolation (draw contours on every N-th slice and then generate contours between them), because after copying you have to adjust each contour on every slice anyway, while after interpolation you may need to do make only minor adjustments (if any) on certain slices.

A filter such as vtkVoxelContoursToSurfaceFilter could be used for the contour interpolation. It could be implemented in a separate module. Optionally a shortcut could be added to the editor toolbar to launch the interpolation directly from there.

Morphological opening can be used as a workaround until contour interpolation becomes available as a module:
· Segment 1 slice out of every 2-4 slices

· Cick on “Dilate effect”, click “Apply” 1-3 times (until the holes between the slices are filled)

· Click “Erode Effect”, and click “Apply” 1-3 times (until the labels return to their original size)

Limitations:

1. The original contours are not preserved. If you skip more slices then you save more time but you need more dilate/erode steps, which removes some details from the original contours. So, if you have complex contours then you can skip less slices.
2. You need to skip about the same number of slices between each segmented slice: you cannot just skip more slices when there are not too much change in the contours (because you’ll either have holes in the sparsely contoured areas or you’ll apply more dilations, but then lose more details in other areas).

Andras

From: slicer-users-bounces@bwh.harvard.edu [mailto:slicer-users-bounces@bwh.harvard.edu] On Behalf Of Steve Pieper
Sent: July 16, 2012 9:20 AM
To: Ghosh, Pranay Kumar
Cc: slicer-users@bwh.harvard.edu
Subject: Re: [slicer-users] copy and paste in editor

Hi -

Unfortunately no, there isn't a feature like that - can you add a feature request to the bug tracker in the Siicer4 Editor category?

If you haven't tried already, you might use the Threshold Paint feature, along with the Rectangle or Paint tools - these can allow you to move pretty quickly through a volume (although you still need to visit each slice).

-Steve

2012/7/16 Ghosh, Pranay Kumar <p.ghosh@fz-juelich.de>
Hello,

Is there a way i can copy and paste a segmented region from one slice over other. I have 256 slices in axial direction. Using threshold segmentation includes unwanted regions, therefore I am performing a manual segmentation. but it’s a tedious process to do for each slice. Please let me know if there is a better way.

Mit freundlichen Grüßen
Pranay Kumar Ghosh
Institut für Bio- und Geowissenschaften
IBG-1: Biotechnologie
modelling and simulation
Forschungszentrum Jülich GmbH
Telefon 02461 61-1959
FAX 02461 61-8045
p.ghosh@fz-juelich.de

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I've been in contact with the MITK group to see if we can use their label interpolation code in some way. Perhaps first as a command line module extension.

Fill between slices effect in Segment Editor module provides this.