[vtkusers] Help accessing results from Sobel3D

[Paulo Neves]

Dear all,

I am trying to obtain results of Sobel 3D over a 3D dataset of DICOM images.

DICOM images are correctly imported through GDCM, and a Ray Casting Volume Rendering shows that everything is ok with this part.

I am using vtkSobel3D to calculate sobel filter by setting the input connection to the output of the reader.

Up to this everything seems to be fine. However, now I needed to get to the values themselves, which I hope results in a 3 (Gx, Gy and Gz) sober components, each with 3 coordinates (x, y, z). This comes from my analogy that Sobel 2D produces Gx and Gy, both 2D "images".

I found out an example with Sobel3D in here: http://www.vtk.org/Wiki/VTK/Examples/Cxx/Broken/Images/ImageSobel3D

However, I only obtain a planar image from the x and y components (no z component in the example, since it is only a 2D image as source).

My question is, since I have 3D Gx, Gy and Gz components, how can I access them?

Any help would be much appreciated.

Best regards,
_________________________________________________________
Paulo Alexandre Neves
E-mail: paulo dot alex dot neves at gmail dot com


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