[ITK-users] [ITK] Question about ImageFileReader

[Bill Lorensen]

If you don't use cmake, you can do the following to register the factories:

In order to register them define this variable
(ITK_IO_FACTORY_REGISTER_MANAGER) before you
includeitkImageFileReader.h file. This will register all the different
IOs and then you can use them.

 #define ITK_IO_FACTORY_REGISTER_MANAGER
 #include <itkImageFileReader.h>

In your include path please make sure to set the path to the file
itkImageIOFactoryRegisterManager.h

 itk\Modules\IO\ImageBase\include


On Thu, Mar 27, 2014 at 12:26 PM, Matt McCormick
<matt.mccormick at kitware.com> wrote:
> Hi Tim,
>
> If CMake is used to generate the project (either XCode projects or
> Makefiles), it will generate a little code that is linked into your
> executable that automatically does the factory registration.
>
> XCode is much slower, but if your experience was with building a huge
> project like ITK, it will be a relatively small difference when
> building a small project that links against ITK.
>
> HTH,
> Matt
>
> On Thu, Mar 27, 2014 at 12:45 PM, Tim Allman <dr.tim.allman at gmail.com> wrote:
>> Matt,
>>
>> I don't see the link between your two sentences. Are you telling me that
>> using Makefiles produces a different result?
>>
>> I tried using CMake derived Xcode projects but the result was a very(!) slow
>> build.
>>
>> Thanks,
>> Tim
>>
>>
>> On 14-03-27 12:05 PM, Matt McCormick wrote:
>>>
>>> Hi Tim,
>>>
>>> CMake can generate XCode projects.  Otherwise, the ImageIO factories
>>> will need to be registered with, e.g.
>>>
>>>    itk::JPEGImageIOFactory::RegisterOneFactory();
>>>
>>> HTH,
>>> Matt
>>>
>>> On Thu, Mar 27, 2014 at 11:51 AM, Tim Allman <dr.tim.allman at gmail.com>
>>> wrote:
>>>>
>>>> No I'm not. I'm working on a Mac :-( and using Xcode. However, the ITK
>>>> libraries were built with CMake. Because I have to support both 32 and 64
>>>> bit I used lipo to create universal static libraries but that is the only
>>>> difference between what I am doing and a standard build.
>>>>
>>>>
>>>> On 14-03-27 11:33 AM, Bill Lorensen wrote:
>>>>
>>>> Are using CMake to configure your program?
>>>>
>>>> On Mar 27, 2014 11:23 AM, "Tim Allman" <dr.tim.allman at gmail.com> wrote:
>>>>>
>>>>> Perhaps I misunderstand the documentation but I have written the
>>>>> following
>>>>> code with the idea that I could read arbitrary image file types and let
>>>>> the
>>>>> ImageFileReader instance figure out which ImageIO was needed. The files
>>>>> are
>>>>> Nrrd which seems to be supported but the last line fails with the error
>>>>> below.
>>>>>
>>>>> Any suggestions?
>>>>>
>>>>>       std::string name =
>>>>> /Users/tim/devel/ConvertToDicom/Case005/out_000.nrrd
>>>>>
>>>>>      typedef unsigned short PixelType;
>>>>>      typedef itk::Image<PixelType, 2u> Image2DType;
>>>>>      typedef itk::ImageFileReader<Image2DType> ReaderType;
>>>>>
>>>>>      ReaderType::Pointer reader = ReaderType::New();
>>>>>      reader->SetFileName(name);
>>>>>      reader->Update();
>>>>>
>>>>> itk::ImageFileReaderException:
>>>>>
>>>>> /Users/tim/usr/local/ITK/Universal/Debug/include/ITK-4.5/itkImageFileReader.hxx:143:
>>>>>   Could not create IO object for file
>>>>> /Users/tim/devel/ConvertToDicom/Case005/out_000.nrrd
>>>>>    Tried to create one of the following:
>>>>>    You probably failed to set a file suffix, or
>>>>>      set the suffix to an unsupported type.
>>>>>
>>>>> Thanks,
>>>>> Tim
>>>>>
>>>>> --
>>>>> Tim Allman, Ph.D.
>>>>> 35 Margaret Street,
>>>>> Guelph Ontario N1E 5R6
>>>>> Canada
>>>>>
>>>>>
>>>>> _____________________________________
>>>>> 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.php
>>>>>
>>>>> Please keep messages on-topic and check the ITK FAQ at:
>>>>> http://www.itk.org/Wiki/ITK_FAQ
>>>>>
>>>>> Follow this link to subscribe/unsubscribe:
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>>>>>
>>>> --
>>>> Tim Allman, Ph.D.
>>>> 35 Margaret Street,
>>>> Guelph Ontario N1E 5R6
>>>> Canada
>>>>
>>>>
>>>> _____________________________________
>>>> 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.php
>>>>
>>>> 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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>>>>
>>
>> --
>> Tim Allman, Ph.D.
>> 35 Margaret Street,
>> Guelph Ontario N1E 5R6
>> Canada
>>



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