[Rtk-users] SimpleRTK : help for defining a correct json file for CudaBackProjectionImageFilter

[Yannick Boursier]

Hi Cyril,

Sorry for my late answer. First thank you because your last trick 
(removing <InpuImageType>) worked, I correctly compiled and installed 
everything.

I am late because I thought that I did something wrong since when I 
tested the code by simply projecting then backprojecting a simple 
volume, the results between the CPU-codes and GPU-codes were different 
and the GPU result cas clearly wrong.

I understood this morning the problem and put it in evidence : the 
CudaForwardProjectionImageFilter seems to be not adapted to the case 
when the size of voxels and pixels are not equal to 1 whereas the 
CudaBackProjectionImageFilter is OK for that !!

I will try to debug it and let you know.

I wish to all of you a Merry Christmas and relaxing holidays.

Best ,

Yannick


Le 18/12/2017 à 16:52, Cyril Mory a écrit :
>
> Hi again Yannick,
>
> Simply removing the <InputImageType> on line 9 of your .json file made 
> it compile. I didn't test it yet. Let us know if that works for you.
>
> Cyril
>
>
> On 18/12/2017 16:31, Cyril Mory wrote:
>>
>> Hi Yannick,
>>
>> You seem to be in a hurry, so I'll start with an incomplete answer: 
>> the CudaForwardProjectionImageFilter is templated over its input and 
>> output image type, but the CudaBackProjectionImageFilter isn't 
>> (compare rtkCudaForwardProjectionImageFilter.h and 
>> rtkCudaBackProjectionImageFilter.h, there is not "template <>" before 
>> the class definition in ...Back..., while it is there in ...Forward...).
>>
>> I'm trying to modify your .json file accordingly, recompile and test, 
>> but I never use SimpleRTK myself, so you might find the solution 
>> before I do. If so, please report back on this mailing list.
>>
>> Cyril
>>
>>
>> On 18/12/2017 16:07, Yannick BOURSIER wrote:
>>> Hello all,
>>>
>>> I really need in "relative" emergency to execute the kernel CudaBackProjectionImageFilter using the Python Wrapper provided by SimpleRTK.
>>> Unfortunately, this is not implemented in cuda (CudaForwardProjectionImageFilter is but not the BackProjection).
>>>
>>> I tried to define a json file (in attachement) on the base of CudaForwardProjectionImageFilter (since all the h, hxx, cxx, files I looked at seemed to be the same for these two kernels) but it does not compile (cmake instruction OK but not the make instruction) with the following error :
>>>
>>> /data/boursier/Compile/rtk-bin-extended/SimpleRTK-build/Code/BasicFilters/src/srtkCudaBackProjectionImageFilter.cxx: In member function ‘rtk::simple::Image rtk::simple::CudaBackProjectionImageFilter::ExecuteInternal(const rtk::simple::Image&, const rtk::simple::Image&)’:
>>> /data/boursier/Compile/rtk-bin-extended/SimpleRTK-build/Code/BasicFilters/src/srtkCudaBackProjectionImageFilter.cxx:132:16: error: ‘rtk::CudaBackProjectionImageFilter’ is not a template
>>>     typedef rtk::CudaBackProjectionImageFilter<InputImageType> FilterType;
>>>
>>> I would very much appreciate some help please because at this point, I have no idea about the problem...
>>> Thanks in advance,
>>> Best regards,
>>> Yannick Boursier
>>>
>>>
>>> _______________________________________________
>>> Rtk-users mailing list
>>> Rtk-users at public.kitware.com
>>> https://public.kitware.com/mailman/listinfo/rtk-users
>>
>

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