[vtkusers] Set the opacity or thresholding of a VTKVolume

[David Brayford]

Michael,

Unfortunately, the changes still result in the flesh being shown (CT
DICOM files). Although when I generate a DRR from the volume using ITK
I get the bone and I am able to view just the bones with DICOMWorks.

So was wondering if there is a similar function to the ITK function
interpolator->SetThreshold(threshold);

I would assume this functionality is common to view CT data within
VTK, but don't know how to set it and it's frustrating.

David

On Sun, Sep 11, 2011 at 5:44 AM, Michael K <vtkusers at michael-kloster.de> wrote:
> Hi David,
>
> you could try to set a lower value for the maximum opacity, like:
> opacity->AddPoint(255, 0.7);
> This would result in a less dense volume, causing a better penetration.
>
> If you have a dense area close to the border of your volume you could try to
> get rid of that by clipping.
>
> Finally if the casing has the highest density values in the volume, you
> could also define a opacity function with low opacity for the highest
> values, thus masking out the casing.
>
> Hope this helps,
> bye,
> Michael
>
>
>
> --
> View this message in context: http://vtk.1045678.n5.nabble.com/Set-the-opacity-or-thresholding-of-a-VTKVolume-tp4786995p4791333.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
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