Hi Utkarsh,
Like you I suspect the NifTI/Analyze writers are not capturing the vtkImageData.
I will do the tests you suggest, and let you know results.
-Timothy
On Thu, 19 Sep 2013, Utkarsh Ayachit wrote:
Timothy,
If you try saving out a vti file, is everything working correctly?
Seems to me the Nifti/Analyze writers are not respecting the spacing
that vtkImageData is providing. I wonder if the writer was hard coded
to use the meta-data provided by Nifti/Analyze readers to determine
the spacing and hence could work if you opened and good Nifti file and
then saved it out.
Utkarsh
On Wed, Sep 18, 2013 at 3:57 PM, Timothy Brown <[email protected]> wrote:
Hi ParaView users,
I am converting vti data (MRI) to NifTI and am experiencing an error. I
have attached an image that
illustrates the geometry, as well as what I think may be the issue.
The voxels in the MRI were not isotropic. The top row of the image shows
the head, the proportions
of which appear correct, as well as some of the Data Arrays information.
Note vtkVolumeSpacing
0.9375, 2 - this matches the MRI acquisition.
Using ParaView 4.0.1 (version included in graphic) I save data as NifTI. I
then loaded the NifTI, and
as you can see, colored pink on second row, it is compressed along one axis.
Note vtkVolumeSpacing
1, 1 - I think this could be source of error.
I also attempted to save to Analyze format with similar result.
I'd appreciate any help/feedback,
Many thanks,
-Timothy
Timothy Brown email: [email protected]
Computational Anatomist phone: 410.516.7551
Center for Imaging Science fax: 410.516.4557
Johns Hopkins University
301 Clark Hall
3400 N. Charles Street
Baltimore, MD 21218
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Timothy Brown email: [email protected]
Computational Anatomist phone: 410.516.7551
Center for Imaging Science fax: 410.516.4557
Johns Hopkins University
301 Clark Hall
3400 N. Charles Street
Baltimore, MD 21218
_______________________________________________
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki at:
http://paraview.org/Wiki/ParaView
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