[vtkusers] Best 3D rendering technique for a point cloud?

[David Gobbi]

Hi Jason,

In order to render a point set as a solid object you need some way of
interpolating between the points.  Using Delaunay to create a mesh and
then vtkProbeFilter to interpolate is a straightforward way of doing
so, but is not very efficient as you have noted.  You can also look
into vtkGaussianSplatter and vtkShepardMethod as possible alternatives
(I'm not familiar with either of them, but I know that they are meant
for creating ImageData from unstructured data).

   David


On Mon, Jul 26, 2010 at 9:50 AM, Jason T. <jasontang65 at gmail.com> wrote:
>
> Hi David,
>
> I am a bit unclear on step 2). I use
> SetSourceConnection(delaunay3d->GetOutputPort()) and I have also set up a
> vtkImageData with the scalar pixel data. How do I
>
> Also, by "volume rendering" do you mean using a datasetmapper (with LUT set)
> + vtkVolume? Can this be done with actors?
>
> I'm also thinking of shying away from the delaunay because it takes a bit
> too long and I get some degenerate triangles. Could this work just my point
> set?
>
> Jason
> --
> View this message in context: http://vtk.1045678.n5.nabble.com/Best-3D-rendering-technique-for-a-point-cloud-tp1842848p2228193.html
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