[Rtk-users] Wrapping python and json file : member image pointer

[Cyril Mory]

Hi,

A question that then comes to my mind : why do you pass the image as 
parameter ? Passing it as input, you would benefit from the pipeline 
features, such as making your output outdated when you modify your input 
binary mask, or loading of only the required part of your binary mask, ...
Did you try it, and it didn't work ? I can help you do it this way if 
you need.

Cyril

On 06/17/2016 06:46 PM, Simon Rit wrote:
> Hi Fabien,
> I can't say I master this but I had to do something similar in 
> FieldOfViewImageFilter.json 
> <https://github.com/SimonRit/RTK/blob/master/utilities/SimpleRTK/Code/BasicFilters/json/FieldOfViewImageFilter.json>. 
> Look at the "ProjectionsStack" parameter which is actually a 3D image. 
> How did I come up with such a complicated code? No clue, but SimpleITK 
> has similar ugly json files, e.g., 
> LabelMapContourOverlayImageFilter.json 
> <https://github.com/SimpleITK/SimpleITK/blob/master/Code/BasicFilters/json/LabelMapContourOverlayImageFilter.json>. 
> My guess is that passing an image as a parameters in an itk image 
> filter is not so common...
> I hope this helps,
> Simon
>
> On Fri, Jun 17, 2016 at 11:07 AM, Fabien Momey <fabien.momey at gmail.com 
> <mailto:fabien.momey at gmail.com>> wrote:
>
>     Hi everyone,
>
>     I need some help for updating a JSON file for the
>     ConjugateGradientConeBeamReconstructionFilter.
>
>     I want to test a new implementation I made on this filter to
>     perform a support constraint for the reconstructed image.
>
>     The constraint consists in a binary mask passed as an attribute.
>     This attribute is a pointer to an image of type TOutputImage. The
>     default value (in the constructor) is NULL.
>
>     I don't know how to write it in the JSON file to wrap this member :
>
>      {
>           "name" : "SupportMask",
>           "type" : ?,
>           "default" : ?,
>           "briefdescriptionSet" : "",
>           "detaileddescriptionSet" : "",
>           "briefdescriptionGet" : "",
>           "detaileddescriptionGet" : ""
>        }
>
>     Does it also need to perform a specific cast with the optional
>     field custom_itk_cast ? I don't really understand how it works.
>
>     Thanks in advance for your help.
>
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