[Insight-users] guest image pixel type

[Bill Lorensen]

For MR/CT images, I always use short for the output of the readers.
WHat are your modalities? If you have PET or SPECT they may be
floating point.

Bill

On Tue, Nov 24, 2009 at 5:06 PM, Lic. José M. Rodriguez Bacallao
<jmrbcu at gmail.com> wrote:
> but I will need to manage all pixel type that I need to handle no?
>
> On Tue, Nov 24, 2009 at 5:00 PM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
>> Then I would use the itk readers. itk has better support for image
>> reading and processing.
>>
>>
>> On Tue, Nov 24, 2009 at 4:38 PM, Lic. José M. Rodriguez Bacallao
>> <jmrbcu at gmail.com> wrote:
>>> in fact I need to use both, vtk for visualization and itk for processing
>>>
>>> On Tue, Nov 24, 2009 at 4:15 PM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
>>>> It is up to you. If you are using vtk, then use vtk for reading.
>>>>
>>>> On Tue, Nov 24, 2009 at 4:01 PM, Lic. José M. Rodriguez Bacallao
>>>> <jmrbcu at gmail.com> wrote:
>>>>> so, if U need to do all those things to read an image(s) with itk, why
>>>>> U doesn't use vtk and gdcm for reading?
>>>>>
>>>>> On 11/24/09, Bill Lorensen <bill.lorensen at gmail.com> wrote:
>>>>>> Here's what we do in Slicer3:
>>>>>>
>>>>>>   #include "itkPluginUtilities.h"
>>>>>>   ...
>>>>>>   itk::ImageIOBase::IOPixelType pixelType;
>>>>>>   itk::ImageIOBase::IOComponentType componentType;
>>>>>>
>>>>>>   try
>>>>>>     {
>>>>>>     itk::GetImageType (fileName, pixelType, componentType);
>>>>>>    }
>>>>>>
>>>>>>     // This filter handles all types on input, but only produces
>>>>>>     // signed types
>>>>>>
>>>>>>     switch (componentType)
>>>>>>       {
>>>>>>       case itk::ImageIOBase::UCHAR:
>>>>>>       case itk::ImageIOBase::CHAR:
>>>>>>         return DoIt( argc, argv, static_cast<char>(0));
>>>>>>         break;
>>>>>>       case itk::ImageIOBase::USHORT:
>>>>>>       case itk::ImageIOBase::SHORT:
>>>>>>         return DoIt( argc, argv, static_cast<short>(0));
>>>>>>         break;
>>>>>>       case itk::ImageIOBase::UINT:
>>>>>>       case itk::ImageIOBase::INT:
>>>>>>         return DoIt( argc, argv, static_cast<int>(0));
>>>>>>         break;
>>>>>>       case itk::ImageIOBase::ULONG:
>>>>>>       case itk::ImageIOBase::LONG:
>>>>>>         return DoIt( argc, argv, static_cast<long>(0));
>>>>>>         break;
>>>>>>       case itk::ImageIOBase::FLOAT:
>>>>>>         return DoIt( argc, argv, static_cast<float>(0));
>>>>>>         break;
>>>>>>       case itk::ImageIOBase::DOUBLE:
>>>>>>         return DoIt( argc, argv, static_cast<double>(0));
>>>>>>         break;
>>>>>>       case itk::ImageIOBase::UNKNOWNCOMPONENTTYPE:
>>>>>>       default:
>>>>>>         std::cout << "unknown component type" << std::endl;
>>>>>>         break;
>>>>>>       }
>>>>>>     }
>>>>>>   catch( itk::ExceptionObject &excep)
>>>>>>     {
>>>>>>     std::cerr << argv[0] << ": exception caught !" << std::endl;
>>>>>>     std::cerr << excep << std::endl;
>>>>>>     return EXIT_FAILURE;
>>>>>>     }
>>>>>>   return EXIT_SUCCESS;
>>>>>> }
>>>>>>
>>>>>> Where itkPluginUtilities.h is here:
>>>>>> http://viewvc.slicer.org/viewcvs.cgi/trunk/Base/CLI/itkPluginUtilities.h?rev=5669&view=markup
>>>>>>
>>>>>> For an example of a complete program see:
>>>>>> http://viewvc.slicer.org/viewcvs.cgi/trunk/Applications/CLI/Add.cxx?rev=10441&view=markup
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Lic. José M. Rodriguez Bacallao
>>>>> Centro de Biofisica Medica
>>>>> -----------------------------------------------------------------
>>>>> Todos somos muy ignorantes, lo que ocurre es que no todos ignoramos lo mismo.
>>>>>
>>>>> Recuerda: El arca de Noe fue construida por aficionados, el titanic
>>>>> por profesionales
>>>>> -----------------------------------------------------------------
>>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Lic. José M. Rodriguez Bacallao
>>> Centro de Biofisica Medica
>>> -----------------------------------------------------------------
>>> Todos somos muy ignorantes, lo que ocurre es que no todos ignoramos lo mismo.
>>>
>>> Recuerda: El arca de Noe fue construida por aficionados, el titanic
>>> por profesionales
>>> -----------------------------------------------------------------
>>>
>>
>
>
>
> --
> Lic. José M. Rodriguez Bacallao
> Centro de Biofisica Medica
> -----------------------------------------------------------------
> Todos somos muy ignorantes, lo que ocurre es que no todos ignoramos lo mismo.
>
> Recuerda: El arca de Noe fue construida por aficionados, el titanic
> por profesionales
> -----------------------------------------------------------------
>