[Paraview] [EXTERNAL] Re: Volume rendering of structured/regular grid

[Moreland, Kenneth]

Actually, you shouldn't even have to do that. You should be able to just
change the representation to volume. If your data is a uniform rectilinear
grid (the information panel declares the type as Image (Uniform
Rectilinear Grid)), then it will be directly volume rendered using an
image-based volume renderer. If your data is curvilinear (the information
panel declares the type as Structured (Curvilinear) Grid), then ParaView
will internally run tetrahedralize under the covers and use an
unstructured volume rendering algorithm. As Utkarsh said, though, this
will increase the memory footprint.

-Ken




On 10/30/13 8:24 AM, "Utkarsh Ayachit" <utkarsh.ayachit at kitware.com> wrote:

>You can convert the structured grid to unstructured grid by apply the
>"Tetrahedralize" filter. Note, however, that this will increase the
>memory footprint quite considerably. So if your structured grid is
>"huge", you may run into memory issues.
>
>Utkarsh
>
>On Wed, Oct 30, 2013 at 10:03 AM, Urban Simoncic
><urban.simoncic at gmail.com> wrote:
>> It's 4.0.1 64-bit for Win-7, original Kitware build.
>>
>> Thanks,
>> Urban
>>
>>
>> On 30.10.2013 14:53, Utkarsh Ayachit wrote:
>>>
>>> What version of ParaView is this?
>>>
>>> On Tue, Oct 29, 2013 at 5:12 PM, Urban Simoncic
>>> <urban.simoncic at gmail.com> wrote:
>>>>
>>>> Hi,
>>>>
>>>> I would like to do volume rendering on a medical image, which is 3D
>>>> structured/regular grid. I can open the image, display slices etc.,
>>>>but
>>>> can't do volume rendering. To my understanding that's because volume
>>>> rendering works only for unstructured grid. Is that true? Is it
>>>>possible
>>>> to
>>>> convert the structured/regular grid into unstructured one?
>>>>
>>>> Thanks,
>>>> Urban
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