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

[Fabien Momey]

Hi Cyril,

Of course it could be a solution, but as the filter as already 3 inputs, I
did not want to add this mask as a fourth one as it seems to me that it is
very optional.

But I understand that it would be useful for a better memory handling. I
did not try your solution and I have to confess that I do not feel
sufficiently good in "RTK programming".

So I willl try first my solution and we can eventually discuss in the
future for a better way for implementing this feature !

Thanks for your response Cyril !

Fabien

2016-06-20 9:30 GMT+02:00 Cyril Mory <cyril.mory at uclouvain.be>:

> 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 features, such as making your output outdated when you modify your input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>
> 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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>>
>
>
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