[vtkusers] Coloring "local" elevation

[David E DeMarle]

One way would be to cut the craters out and render them independently with
their own elevation filters.

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Wed, May 13, 2015 at 8:16 PM, vertan <hedman.filip at gmail.com> wrote:

> Hi!
>
> Imagine this scenario; I have some 3D data from the real world that I want
> to color according to elevation. There is a flat area on one end, with some
> kind of small crater. On the other side, there is a higher plateau that
> also
> has a crater. If I were to color this with a simple lookup table and
> vtkElevationFilter, I'd have a red color on the higher plateau and a blue
> color down on the lower, flat side.
>
> However, what I really want is to highlight the craters elevation only, and
> somehow "ignore" the height around them. I've seen terms like "local
> elevation" or "relative elevation" before, which sounds like something I
> want. So I might want to look at the local neighbours when comparing the
> elevation, rather than the whole global elevation of the 3D object.
>
> I've searched around through the VTK documentation, but being new to VTK, I
> haven't found anything that might suit my needs, so I'm hoping that someone
> here might have an idea!
>
> Thanks
>
>
>
> --
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