[Insight-users] Registration example in ITK User guide

[Luis Ibanez]

Hi Xi,

Please note that when you load a 3D image into paraview,
you will not see anything immediately.

You will have to proceed to cut a slice through the volume
by using the "Cut" filter.

Otherwise you will only see a wireframe that shows the
outline of the volume in space.

Also, in order to visualize the deformation field, you must
upload the image (vector field) into ParaView, and then
apply to it the Glyph filter, by using "arrows" as Glyphs.


      Regards,


            Luis


------------------------------------------------------------------------------------
On Sun, Dec 6, 2009 at 9:09 PM, Xi LIANG <liangxi1986317 at hotmail.com> wrote:
> Dear all,
> Just to finish this topic, I finally managed to visualize the image, and
> deformation field of the example in
> /Example/Registration/DeformableRegistration8.cxx through VV. I still cannot
> get any visualization done in ParaView. Slicer can visualize the image, but
> I havent found a proper way to visualize the deformable field.
> Regards,
>
> --------------------------------
> Xi Liang
>
> 梁茜
> --------------------------------
>
>
>
>
>> Date: Thu, 3 Dec 2009 21:24:34 -0500
>> Subject: Re: [Insight-users] Registration example in ITK User guide
>> From: luis.ibanez at kitware.com
>> To: liangxi1986317 at hotmail.com
>> CC: insight-users at itk.org
>>
>> Hi Xi,
>>
>> If the purpose of the visualization is to verify the quality of the
>> registration,
>> you simply need to use
>>
>> A) the VV application from the Creatis group:
>> http://www.creatis.insa-lyon.fr/rio/vv
>>
>> or
>>
>> B) Slicer (http://www.slicer.org)
>>
>>
>> They are both based on ITK and VTK, and have built-in method for
>> performing visualization of registered images.
>>
>> You will find VV described in the following paper in the Insight Journal:
>> http://www.midasjournal.org/browse/publication/617
>>
>> Of course, you can also use ParaView directly.
>>
>> Note that ITK can write images in .VTK format,
>> and they can in turn be read in ParaView (and Slicer and VV)
>> directly.
>>
>> Note also that your current .mha or .mhd image can also
>> be directly loaded in ParaView, and Slicer, and VV.
>>
>>
>> In summary: You can simply download any of those
>> three applications and open your current output files
>> without having to do any further processing on them.
>>
>>
>>
>> Regards,
>>
>>
>> Luis
>>
>>
>>
>>
>> ----------------------------------------------------------------------------------------------
>> On Wed, Dec 2, 2009 at 9:32 PM, Xi LIANG <liangxi1986317 at hotmail.com>
>> wrote:
>> > Dear all,
>> > Finally I finished compiling and
>> > building Examples/Registration/DeformableRegistration8.cxx. This is a
>> > multi-resolution, 3D deformable registration example. I got couple of
>> > mha,
>> > mhd, raw files for fixed, moving, transformed images, and deformation
>> > fields
>> > as output.
>> > However, I realize what I have done was the easiest part, and
>> > the visualization is my real problem. Followings are my understanding of
>> > what I should do
>> > 1. process mha, raw format of data by VTK, and generates corresponding
>> > *.vtk
>> > files.
>> > 2. Then visualize VTK files through ParaView or Slicer.
>> > I doubt that the VTK file I need to write wont be easily done, as Im
>> > reading
>> > the VTK user guide, and the 3D visualization is not an easy sell.
>> > Is there any other easy choice to visualize the image, since my focus is
>> > Registration. OR... I really need to work hard on VTK as well, in order
>> > to
>> > evaluate the registration from ITK properly.
>> >
>> > Cheers,
>> > --------------------------------
>> > Xi Liang
>> >
>> > 梁茜
>> > --------------------------------
>> >
>> >
>> >
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