[ITK-users] [ITK] Question about ImageFileReader

[Matt McCormick]

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
>>>>
>>>>
>>>> _____________________________________
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>>>>
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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:
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>>>
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>
> --
> Tim Allman, Ph.D.
> 35 Margaret Street,
> Guelph Ontario N1E 5R6
> Canada
>