[ITK-users] Iteration order 3d, 4d image

[jose alejandro matute flores]

Dear Jan,

I'm not sure if there is a iterator that does that, but there are two other
methods which could be used for what you desire.

1. Using vector images,
http://www.itk.org/Doxygen/html/classitk_1_1VectorImage.html
http://itk.org/Wiki/ITK/Examples/VectorImages/VectorImage

2. if the fourth dimension is fixed, then declare an image whose PixelType
is a CovariantVector.
http://www.itk.org/Doxygen/html/classitk_1_1CovariantVector.html

both will then 3d iterators.

Hopefully this can be useful,
Regards,
Jose






On Sun, May 3, 2015 at 3:02 PM, Jan Dorazil <deu439 at gmail.com> wrote:

> Hello,
> I have a question on usage of iterators in ITK.
>
> I have 4d MRI image 255x255x21x5 where the 4th
> dimension is time.
>  I would like to extract 5 features (only pixel intenzities)
> for each voxel in XxYxZ subvolume, ( along T axis).
> Then I need to supply these feature sets into a prediction
> model  and as i receive predictions for each feature set I
> would like to reconstruct the image from these
> predictions.
>
> What kind of iterator shall I use to make sure that the
> feature extraction step (on 4d image) will iterate in the
> same order as the reconstruction step (on 3d image)?
>
> Regards,
> Jan Dorazil
>
>
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