[vtkusers] 3d reconstruction

[Amy Squillacote]

Are you linking against the vtkVolumeRendering library? You would need 
to do that in order to use vtkVolumeRayCastMapper (or any other volume 
rendering mapper).

- Amy

Alosha [Dread_Lord] wrote:
>
> Thank you for your answer.
>  
> The vtkDicomImageReader actually works, but I have some LINK error 
> while instantiating vtkVolumeRayCastMapper.
>  
> ( vtkVolumeRayCastMapper *mapper = vtkVolumeRayCastMapper::New() )
>  
> Anyway, is the vtkDicomImageReader build a 3D mesh using the 2D dicom 
> serie, or just generate a data set ?
>  
> In this last case, how can I display it in my igstk::View3D ? I 
> suppose I have to build a mesh with it ?
>  
> I guess there is a VTK class which takes a volume VTK data set and 
> build a mesh with it, but I don't know which class :S.
>  
> Anyway, thanks for your answer, and I'm all ears if anyone knows how 
> to generate a 3D object from my 2D Dicom series for displaying in a 
> igstk::View3D
>
>
>
>     ------------------------------------------------------------------------
>     From: w_e_b_m_a_s_t_e_r_6_9 at hotmail.com
>     To: cocorim at hotmail.fr
>     CC: vtkusers at vtk.org
>     Subject: RE: [vtkusers] 3d reconstruction
>     Date: Thu, 22 May 2008 00:44:50 +1000
>
>     You can actually read in a DICOM file as a 3D object just using VTK.
>
>     vtkDICOMImageReader *dicomReader = vtkDICOMImageReader::New();
>       dicomReader->SetDirectoryName( "C:\\dicomfolder\\");
>
>     Have a look at Ray Cast Mapping as well (vtkVolumeRayCastMapper).
>     I'm not sure if there is a better way though. With this approach,
>     the image has to reduce its image quality (goes a bit blurry)
>     while you move the camera. Then once you are finished moving
>     around it will return to its original quality.
>
>     Alternatively you can read it in using ITK, and then convert it
>     back to VTK. I haven't tried this, so maybe someone can let you
>     know the best way to do it.
>
>     Regards,
>     Cameron.
>
>
>
>         ------------------------------------------------------------------------
>         From: cocorim at hotmail.fr
>         To: vtkusers at vtk.org
>         Date: Wed, 21 May 2008 13:48:12 +0200
>         Subject: [vtkusers] 3d reconstruction
>
>         Hi all !
>          
>         Maybe the problem has already been exposed, and I'm sorry if
>         it was.
>          
>         I've managed to made a basic DICOM Viewer. It has 4 views ; 3
>         views to axial, coronal ans sagittal orientation, and a
>         tridimentionnal view for 3d reconstruction.
>          
>         I'm using igstk::View2D and igstk::View3D.
>          
>         I instantiate a CTImageSpatialObject in which I put the CT
>         Image from the CTImageReader.
>         Then I put the CTImageSpatialObject into a
>         CTImageSpatialObjectRepresentation and I give it to the
>         igstk::View2D.
>          
>         It's working properly and I can navigate into slides in the
>         three 2D views.
>          
>         My problems is now how to perform a 3D reconstruction of the
>         DICOM and display it in the 3D View.
>          
>         I've search on the net and on the mailing list for some help,
>         but all this is still a little unclear to me.
>         I just know that ITK and VTK has to be used, but I have no
>         idea of how.
>          
>         If you can help me on that or at least show me the way for
>         begin, I would be very greatfull.
>          
>         Thanks a lot !
>
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-- 
Amy Squillacote                    Phone: (256) 726-4839
Computer Scientist                 Fax: (256) 726-4806
CFD Research Corporation           Web: http://www.cfdrc.com
215 Wynn Drive, Suite 501
Huntsville, AL  35805