[Paraview] Binary Thresholding and Isosurface Generation

[Luis Ibanez]

Hi Kevin,


Since both of your images are binary, and one is the inverse
of the other, it is normal that the iso-contour generated by
ParaView is the same for both images.


This should be the case, regarldess what iso-contour extraction
method you use. But, just for the record, what ParaView uses is
the vtkContourFilter:


      http://www.vtk.org/doc/release/5.0/html/a01263.html



What was your goal when you generated one image as the inverse
of the other ?


There may be a better way to achieve your goal....


   Please let us konw,


      Thanks



          Luis



------------------
Kevin Ming wrote:
> Hi,
> 
> I have two 3D images, one being the intensity inverse of the other, 
> produced using the BinaryThresholdImageFilter.  When I generated the 
> isosurface rendering using ParaView, both renderings looked almost 
> identical, given the same contour values.  I would expect one rendering 
> to display features the other one wouldn't be able to, and vice versa, 
> which is what I want.  How does ParaView generate isosurfaces?
> 
> 
> Thank you,
> Kevin
> 
> 
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