[Insight-users] Scalar bar in ParaView

[Luis Ibanez]

Hi Remi,


The example


       Insight/Examples/Registration/
                 DeformableRegistration3.cxx


Uses a variation of the DemonsRegistrationFilter.

Therefore the units of the vectors in the deformation
field will be the *same* units used for representing
spacing in the two input images.

That is, if your input images are CT scans and the
spacing is given in millimeters, then the values of
vector components in the pixels of the deformation
field will also be given in millimeters.

If your input images are from Microscopy and the
spacing is given in microns, then the values of
vector components in the pixels of the deformation
field will also be given in microns.


Registration in ITK is always performed in the
Physical space, never using pixels as units.



   Regards,


      Luis



--------------------------------
remi.chapeaublanc at free.fr wrote:
> Hi Luis,
> 
> Thanks for your reply. Indeed my question was about the the units of the scalar
> bar in Paraview. I am loading the deformation field I obtain using the
> DeformableRegistration3.exe from the itk examples. Would you know what unit is
> used in this example?
> Thanks for your help, and looking forward to your reaction.
> 
> Remi.
> 
> 
> Quoting Luis Ibanez <luis.ibanez at kitware.com>:
> 
> 
>>Hi Remi,
>>
>>I'm assuming that you are referring to the Scalar Bar that you
>>activate in the "View" frame of the "Display" tab.
>>
>>Is that right ?
>>
>>If that is the case, the units in that bar are the units of intensity
>>on your image.
>>
>>In your case, if you are loading a deformation field, then the units
>>are the ones that you used for representing the components of the
>>vectors stored in the pixels of that deformation field.
>>
>>
>>   Regards,
>>
>>
>>      Luis
>>
>>
>>-----------------------------------
>>remi.chapeaublanc at free.fr wrote:
>>
>>>Dear all,
>>>
>>>I work about the deformable registration in ITK, and I visualize my vector
>>
>>field
>>
>>>in Paraview.
>>>
>>>I want know what is the unity about the "scalar bar" (in ParaView) ?
>>>
>>>Thanks in advance !!
>>>
>>>Remi
>>>_______________________________________________
>>>Insight-users mailing list
>>>Insight-users at itk.org
>>>http://www.itk.org/mailman/listinfo/insight-users
>>>
>>>
>>
>>
>>
> 
> 
> _______________________________________________
> Insight-users mailing list
> Insight-users at itk.org
> http://www.itk.org/mailman/listinfo/insight-users
> 
>