[Rtk-users] cast itk:::Image to itk::CudaImage

[Simon Rit]

Hi,
That's one solution. Two other:
- graft the output to a Cuda image
itk::CudaImage<float, 3>::Pointer cuImg = itk::CudaImage<float, 3>::New();
cuImg->Graft(projectionReader->GetOutput())
- use the rtk::ImportImageFilter which is templated over image type to
allow precisely this (I used it in Gate here
<https://github.com/OpenGATE/Gate/blob/develop/source/digits_hits/src/GateFixedForcedDetectionActor.cc#L1583>
).
Best regards,
Simon

On Wed, Jan 16, 2019 at 11:06 PM Andreas Andersen <andreasga22 at gmail.com>
wrote:

> Hi Tao,
>
> I think you want the CastImageFilter
> <https://itk.org/Doxygen/html/classitk_1_1CastImageFilter.html> from ITK.
>
> Something like this:
> using castToImageType = itk::CastImageFilter<itk:::Image<float,3>,
> itk::CudaImage<float,3>>;
> typename castToImageType::Pointer castfilter = castToImageType::New();
> castfilter->SetInput(projectionReader->GetOutput());
> castfilter->Update();
> auto cuda_image = castfilter->GetOutput();
>
> Best regards Andreas
>
> __________________________________
>
> Andreas Gravgaard Andersen
>
> Department of Oncology,
>
> Aarhus University Hospital
>
> Nørrebrogade 44,
>
> 8000, Aarhus C
>
> Mail:     agravgaard at protonmail.com
>
> Cell:      +45 3165 8140
>
>
> On Wed, 16 Jan 2019 at 22:59, tao sun <colddiesun at gmail.com> wrote:
>
>> Hi,
>>
>> I have read in some image using  itk::ImportImageFilter.
>>  ImportFilterType::Pointer projectionReader = ImportFilterType::New();
>> ...
>>  projectionReader->Update();
>>
>> The type of the image is itk:::Image<float,3>. I wonder if there is any
>> way I can cast it to itk::CudaImage<float,3>?
>> In rtkforwardprojections.cxx the imageReaderType is defined as
>> CudaImageType so there is no such problem.
>>
>> Thanks,
>> Tao
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