[vtkusers] Extract a tube of data from DICOM series data

[David Gobbi]

Hi Vincent,

Use an opacity transfer function that makes the black voxels transparent.

You can unwrap the tube by reslicing it through an inverse cylindrical
transformation (e.g. vtkCylindricalTransform and vtkImageReslice).

 - David

On Thu, Nov 6, 2014 at 7:05 AM, Vincent32160 <vsh at magellium.fr> wrote:

> Thanks again David!
>
> As I want to keep a volume I chose solution 2.
> I used a volume mapper and the result is pretty good.
> The only problem is that I am not able to remove the black voxels around
> the
> cylinder. (See picture)
> <http://vtk.1045678.n5.nabble.com/file/n5729393/output2.png>
>
> The next step of my approach is to be able to keep only the voxels on the
> edges (meaning on a tube or hollow cylinder of 1-voxel thickness). And
> after
> that I would like to unfold the tube and have a flat surface of pixels.
> Let me know if you think that it is better to create a new thread for these
> two next steps.
>
> Thanks for your help.
>
> Vincent
>
>
>
>
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