[Insight-users] Re: question about the plane cutting of 3D surface mesh into contour

[Luis Ibanez]

Hi Lin,

The best way to get the contour that is the intersection of a plane
with a 3D mesh is to take the ITK Binary image, convert it to a VTK
image, then use the vtkContour filter and then the vtkCut filter
with an implicit plane.


For examples on how to convert ITK images into VTK images please
look at the following resources:

1) Tutorial:

http://www.itk.org/CourseWare/Training/GettingStarted-II.pdf



2) The Examples on InsightApplications:


     InsightApplications/Auxiliary/vtk/
         itkReadITKImage3DSegmentShowVTK.cxx
         itkReadITKImageSegmentShowVTK.cxx
         itkReadITKImageShowSplineVTK.cxx
         itkReadITKImageShowVTK.cxx



3) and the Paper that Andinet Enquobahrie posted
    in the Insight Journal:

    http://insight-journal.org/dspace/handle/1926/495

    "Seamless VTK-ITK pipeline connection for image data handling"



   Regards,


      Luis



---------------------
Lin, Lan wrote:
> Dear Dr Ibanez,
> 
>          I got a question about cutting the 2D plane from the 3D surface 
> mesh. I modified the deformedmodel1.cxx and exported the vertices and 
> cells of deformed mesh. But how can I get the 2D plane closed contour ( 
> I mean the points are in order like 1->2, 2->3,3->4,4->1) from the 3D 
> mesh. I know the output of the example is 3D binary mask image. The 
> alternative way is extracting the points from each 2D binary image. That 
> will be definitely ill-posed work.
> 
>          I appreciate any comment and suggestion.
> 
> best
> 
>  
> 
>  
> 
>  **Lan Lin**
> 
> phone: (210)450-7556; fax: (210)616-5682
> 
>  
>