[Paraview] [EXTERNAL] Re: Reorientation of a volume

[Moreland, Kenneth]

Actually, there is a much easier solution.  As of ParaView 3.14, the
Transform filter works on both vtkImageData and vtkRectilinearGrid.
Simply load your data in ParaView, and apply the Transform filter using
whatever rotations you want.


-Ken

On 4/6/12 5:19 AM, "David E DeMarle" <dave.demarle at kitware.com> wrote:

>VTK's support for non axis aligned volumes is limited to the
>vtkStructuredGrid class. Like vtkImageData and vtkRectilinearGrid, it
>is used to represent topologically regular images and volumes. However
>the geometry is unconstrained in this class and you have to supply
>coordinates for every point. This implies even greater memory use.
>
>So what I suggest is load in your raw data in ParaView as normal then
>apply the python programmable filter or python calculator to:
>1) change the type to vtkStructuredGrid
>2) compute and populate a buffer with the correct coordinates for each
>point
>3) use vtkStructuredGrid::SetPoints to tell the StructuredGrid to use
>that buffer as the data set's geometry
>
>David E DeMarle
>Kitware, Inc.
>R&D Engineer
>21 Corporate Drive
>Clifton Park, NY 12065-8662
>Phone: 518-881-4909
>
>
>
>On Fri, Apr 6, 2012 at 5:22 AM, Claire Mouton
><claire.mouton at creatis.insa-lyon.fr> wrote:
>> Hi to all,
>>
>> I have a raw image for which the acquisition has not been done
>> following the usual orientation. In other words, the image is not
>>orientated
>> following the usual orthogonal axes, but slightly in diagonal. The size
>> of the image : 1340*1340*1560, representing 2,8 Go.
>>
>> Is it possible to modify its orientation and to save it with the
>>modified
>> orientation?
>>
>> Thanks for your help,
>> Claire Mouton
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