[Insight-users] Re ading an mhd file with unknown pixel type

[InfoSeekerr]

Dear Sergio Ver

S1d3ITKImgType  cannot be found 

best regards 


a wrote:
> 
>>
>> David
>> Based on some message on this mailing list that now I'm unable to find,
>> we
>> use something like this.
>> I suppose it can be improved, but the code accomplishes the task of
>> determining the type of data before actually reading the data.
>>
>> HTH
>>
>> ...
>> typedef itk::ImageIOBase::IOComponentType ScalarPixelType;
>>
>>  itk::ImageIOBase::Pointer imageIO =
>> itk::ImageIOFactory::CreateImageIO(
>> params::filenameIn, itk::ImageIOFactory::ReadMode);
>>
>> if (!imageIO) {
>> std::cerr << "Unable to create a valid ImageIO for image " <<
>> params::filenameIn << ". Exiting." << std::endl;
>> return -1;
>> }
>>
>> // Now that we found the appropriate ImageIO class, ask it to
>> // read the meta data from the image file.
>> //
>>   imageIO->SetFileName(params::filenameIn);
>>   imageIO->ReadImageInformation();
>> const ScalarPixelType pixelType = imageIO->GetComponentType();
>> if (params::verbose)
>> std::cout << "Pixel Type is " <<
>> imageIO->GetComponentTypeAsString(pixelType)
>> << std::endl;
>> const size_t numDimensions =  imageIO->GetNumberOfDimensions();
>> if (numDimensions != 3) {
>> std::cerr << "This soft only soports 3D volumes. Exiting"
>> << std::endl;
>> return -1;
>> }
>>
>>   switch (pixelType) {
>> case itk::ImageIOBase::UCHAR:  DoTheRealThing<UC1d3ITKImgType>(); break;
>> //UC1d3ITKImgType
>> = unsigned char image of 1 channel, 3 dimensions
>> case itk::ImageIOBase::SHORT:  DoTheRealThing<S1d3ITKImgType>();  break;
>> //S1d3 = Short, one chanel, 3dimensions
>> case itk::ImageIOBase::USHORT: DoTheRealThing<US1d3ITKImgType>(); break;
>> case itk::ImageIOBase::FLOAT:  DoTheRealThing<F1d3ITKImgType>();  break;
>> default:
>> std::cerr << "Pixel Type ("
>> << imageIO->GetComponentTypeAsString(pixelType)
>> << ") not supported. Exiting." << std::endl;
>> return -1;
>>   }
>> return 0;
>>
>> template<typename TITKImgType>
>> void
>> DoTheRealThing()
>> {
>>   // Read image with standard itkReadImageFilter as now, we know the type
>> of image via template TITKImgType
>> }
>>
>> On Wed, Dec 1, 2010 at 2:37 PM, David Doria <daviddoria at gmail.com> wrote:
>>
>>> Recently mhd has been my goto file format for writing non-standard-RGB
>>> type images. For example, I may write a
>>>
>>> itk::Image<float, 4>
>>>
>>> or a
>>>
>>> itk::Image<float, 5>
>>>
>>> To successfully read these files, I need to know ahead of time what
>>> type of pixel they contain so I can do:
>>>
>>> typedef itk::ImageFileReader<itk::Image<float, 5> > ReaderType;
>>>
>>> Is there a better way to read these files where the reader will adapt
>>> and give me back an image of the correct type without me having to
>>> specify the type before hand?
>>>
>>> Thanks,
>>>
>>> David
>>> _____________________________________
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>>
>>
>>
>> --
>> Sergio Vera
>>
>>  Alma IT Systems
>>  C/ Vilana, 4B, 4º 1ª
>>  08022 Barcelona
>>  T. (+34) 932 380 592
>>  www.alma3d.com
>>
> 
> 
> 
> -- 
> Sergio Vera
> 
>  Alma IT Systems
>  C/ Vilana, 4B, 4º 1ª
>  08022 Barcelona
>  T. (+34) 932 380 592
>  www.alma3d.com
> 
> _____________________________________
> Powered by www.kitware.com
> 
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
> 
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
> 
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
> 
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-users
> 
> 

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