[ITK] [ITK-users] itk::RayCastInterpolateImageFunction for ITK Python Wrap

Michka Popoff michkapopoff at gmail.com
Sat Mar 26 14:41:46 EDT 2016


I can notify you once it is merged to the master branch of ITK.
This should be fast (as soon as it gets reviewed).

Wrapping new functions/classes is made by adding a .wrap file
in the corresponding “wrapping" folder of the module.
I often just copy-paste a similar .wrap file an adapt it. There are sometimes
some surprise, and the .wrap file needs to be tweaked.

Not sure if we have a guide on how to do it.
Some cases like this one are really easy to implement, some others are more involved.

Once the patch is merged, you will need to build ITK from source.
This is pretty easy: http://www.itk.org/Wiki/ITK/Configuring_and_Building
We can assist you if there are problems.

Writing your own filter in Python is doable; but I never tried such thing.
It would be a nice proof-of-concept to get something like this to run.
But this is probably more work than it is worth.

If you can wait a few days until the patch is merged, and are willing
to build ITK from source, the python solution is probably the easiest.

Michka


> On 26 Mar 2016, at 19:27, D'Isidoro Fabio <fisidoro at ethz.ch> wrote:
> 
> Thank you for your reply.
>  
> I miss the skills to test/review that patch. I do not know how to wrap a C++ code to Python. Is there any relatively easy guide for it?
>  
> Also, what are my possibilities now? Writing my own RayCasting Filter in Python and possibly use it as interpolator for the ResampleImageFilter Filter? Or necessarily turn to C++ forgetting about Python?
>  
> Thanks
>  
> From: Michka Popoff [mailto:michkapopoff at gmail.com] 
> Sent: Samstag, 26. März 2016 19:16
> To: D'Isidoro Fabio
> Cc: insight-users at itk.org
> Subject: Re: [ITK-users] itk::RayCastInterpolateImageFunction for ITK Python Wrap
>  
> Hi
>  
> The function was not wrapped at all.
> Most of them are, and the remaining are added slowly, mostly on-demand (for the moment).
>  
> I made a patch which you can test/review here: http://review.source.kitware.com/#/c/20945/ <http://review.source.kitware.com/#/c/20945/>
>  
> We can probably add it to the 4.9.1 release; else it will land in the ITK 4.10 release.
>  
> Michka
>  
> On 26 Mar 2016, at 17:13, D'Isidoro Fabio <fisidoro at ethz.ch <mailto:fisidoro at ethz.ch>> wrote:
>  
> Hallo,
>  
> I am trying to implement my own Digital Radiograph Reconstruction algorithm with ITK v 4.8 Python Wrap. I have looked on the web and found examples that make use of the itk::RayCastInterpolateImageFunction. However, it seems that this function has not been wrapped for Python because I get the error:
>  
> ‘LazyITKModule’ object has not attribute ‘RayCastInterpolateImageFunction’
>  
> Any help? Hast this been done in the new 4.9 Version or what do you suggest for me to do?
>  
> Thank you.
>  
> Fabio
>  
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