[vtkusers] Estimate(Measure) volume of volume rendered data

[Cory Quammen]

Mallikarjun,

Essentially, no. Volume rendering is a display technique - maybe one
could theoretically formulate an equation to try to calculate the
volume during ray casting, and it's an interesting academic exercise
to imagine, but there are certainly better ways to do volume
estimation. How do you account for fuzzy regions of the volume where
the opacity is not 100%, for example?

My suggestion would be to figure out what a good isocontour value is
for your data set, extract a contour and use vtkMassProperties on the
resulting triangle mesh.

Cory

On Tue, May 10, 2016 at 1:18 AM, Mallikarjun K <mallikarjun49 at gmail.com> wrote:
> Hello All,
> Is there any class in vtk to measure the volume of what is been volume
> rendered?
> I have seen vtkMassProperties class which estimates the volume of triangle
> mesh, but don't know how to make use of this class to volume rendered data.
>
> Any pointers or examples would be greatly appreciated.
>
> Thanks in advancev
> --
> With Kind Regards:
> Mallikarjun
>
>
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-- 
Cory Quammen
R&D Engineer
Kitware, Inc.