[Insight-users] Permute Order in MultiResMIRegistration

[Luis Ibanez]

Hi Rahil,


Please read the documentation of the class at:
http://public.kitware.com/Insight/Doxygen/html/classitk_1_1FlipImageFilter.html

      "The image is flipped across axes for which array[i] is true."

http://public.kitware.com/Insight/Doxygen/html/classitk_1_1PermuteAxesImageFilter.html

     "The elements of the array must be a rearrangement
      of the numbers from 0 to ImageDimension - 1.

     "The i-th axis of the output image corresponds with
       the order[i]-th axis of the input image."

If you pass [0 1 2] as parameter, then the output image will be identical
to the input image.  If you pass [1 0 2] then the output image will use as
X axis, what used to be the Y axis of the input image, and will use as
Y axis, what used to be the X axis of the input image.


Note that in general, you should NOT use the flip / permute
filters. Particularly not if you are using medical data.


     Regards,


          Luis


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On Mon, Jun 14, 2010 at 8:12 AM, raheleh m <meshgolok at yahoo.com> wrote:

> *Greetings!
> *
> I am using ITK Registration. I would be really grateful if you could please
> let me know the meaning of permute order and flip axes arrays. I mean when
> permute order is [0 1 2] what is the order of axes? what about [2 0 1]?
> Does the first array mean (x,y,z) and the second (z,x,y)? I have the same
> question about flip axes.
>
> Thanks in advance
> Rahil Meshgolok
>
>
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