[Insight-users] ITK in Paraview Plugin

Luis Ibanez luis.ibanez at kitware.com
Fri Feb 26 18:28:54 EST 2010 

Hi Christian,

Thanks for letting us know.

The size of the filter seems to be large indeed.

Does it include instantiations for several different pixel types ?

As a reference, a typical executable example of ITK is about 300K.
(when using a single pixel type).

The VolviewPlugins, on the other hand range in size from
1Mb to 5.3Mb. (They include instantiation for 9 different pixel
types).

If you run them through "strip" they get about 25% to 30% smaller.
(e.g. a pluging whose shared library was 2.7M gets down to 2.0Mb).

--

BTW: You mention some code, I seem to have missed your
email with an attachment, or with instructions on how to download
it.  If the code is available, I will be happy to give it a try.



      Regards,


             Luis


---------------------------------------------
On Thu, Feb 25, 2010 at 4:36 PM, Christian Werner
<christian.werner at rwth-aachen.de> wrote:
> It works now when I use TARGET_LINK_LIBRARIES, I just did not do it
> correctly (I did not provide the lib that is actually build!). Strange
> though that the compiler did not seem to care.
>
> There is one issue which is still somewhat annoying. Every Paraview-ITK
> filter is now very big (like 7MB). I do not understand why, but that is
> really huuuuge! I tried reducing this by moving all the exporter/importer
> related code from the ImageBox header into the .cxx code, but that just made
> a difference of a view hundred byte.! It didn't work this way either...
>
> This is really strange, I was so happy that I was able to make the
> vtkITKImageBox a shared library and thought that would reduce the size of
> the plugins to "normal" levels. In a VTK-only environment these filters get
> as big, by the way.
>
> Maybe if you take a look at the code I sent you, you can make out the reason
> for this? I am not sure if the commutiy is glad about being able to easily
> use ITK Filters in Paraview-Plugins when they are this big...
>
>
> Best regards,
> Christian
>
>
>
> Luis Ibanez wrote:
>>
>> Hi Christian,
>>
>>    Thanks for sharing the good news.
>>
>> You are doing very interesting work,
>> it will be really useful to see it described
>> in a IJ paper, or a paper in "The Source"
>> newsletter.
>>
>> ---
>>
>> Regarding LINK_LIBRARIES(): when you
>> use this CMake command, you add a list of
>> libraries to the link line of all the targets.
>>
>> If using LINK_LIBRARIES fixed the problem, then
>> it might be that there was a target in your project
>> for which the ITKCommon library was missing.
>>
>>
>> It will be great to figure this out, because the
>> command LINK_LIBRARIES was deprecated
>> in CMake 2.6.4, and the recommended command
>> to use is TARGET_LINK_LIBRARIES.
>>
>>
>> ...a CMake Guru will be of great help here...
>>
>> You may want to post the question to the CMake
>> users list.
>>
>>
>>     Regards,
>>
>>
>>            Luis
>>
>>
>> ------------------------------------------------------------
>> On Thu, Feb 25, 2010 at 4:57 AM, Christian Werner
>> <christian.werner at rwth-aachen.de> wrote:
>>
>>>
>>> Luis, you led me to the right direction. Good news, everything works
>>> fine!
>>> By chance I found some cmake related postings where there was some
>>> problem
>>> with the LINK_LIBRARIES variable. I was like "Gee, this variable looks
>>> nice!
>>> It could replace my TARGET_LINK_LIBRARIES which does not work anyway."
>>> And
>>> voila, everything goes. This is what I put into my CMakeList that made
>>> Paraview execute my cool plugin (a itkFlipImageFilter :)
>>>
>>> LINK_LIBRARIES( vtkITKImageBox
>>>  ITKCommon ITKIO ITKBasicFilters
>>> )
>>>
>>> I know, diving a little bit more into CMake would have helped in the
>>> first
>>> place, but you just can't study everything before getting your work done.
>>>
>>> What's a bit strange is that the plugin is very big (7MB). I am afraid
>>> that
>>> the vtkITKImageBox (which is about that big), or even some ITK stuff is
>>> cramped into the filter despite my efforts to link everything
>>> dynamically. I
>>> will try to find a solution to this.
>>>
>>>
>>> Thanks for your help with everything Luis and best regards,
>>> Christian
>>>
>>>
>>>
>>>
>>> Christian Werner wrote:
>>>
>>>>
>>>> I am afraid I did. My vtkITKImageBox was build as a shared library, too
>>>> and this was only possible after rebuilding ITK with shared libraries.
>>>>
>>>> Somehow, if you put that
>>>>
>>>> ADD_PARAVIEW_PLUGIN(SampleImageFilter "1.0"
>>>> SERVER_MANAGER_XML SampleImageFilter.xml
>>>> #GUI_RESOURCE_FILES SampleImageFilterGUI.xml
>>>> SERVER_MANAGER_SOURCES vtkITKSampleImageFilter.cxx
>>>> )
>>>>
>>>> into your CMakeList, the compiler does not really seem to care about
>>>> which
>>>> libraries it has to compile against. It makes no difference for the
>>>> compiling and linking process. I do not even have to mention my
>>>> vtkITKImageBox library which is clearly needed by my filter.
>>>>
>>>> So these libraries oviously have to be available "globally" when
>>>> paraview
>>>> runs. I added the ITK library path to the LD_LIBRARY_PATH, which I think
>>>> is
>>>> the place where ParaView looks for shared libraries but that did not
>>>> help.
>>>>
>>>> I asked the guys form ParaView too about that. If everything works fine
>>>> and I have the time I could write a paper about my Paraview-ITK
>>>> Filtering.
>>>>
>>>> Best regards,
>>>> Christian
>>>>
>>>>
>>>> Luis Ibanez wrote:
>>>>
>>>>>
>>>>> Hi Christian,
>>>>>
>>>>>
>>>>>  Did you build ITK as a Shared library ?
>>>>>
>>>>>
>>>>> ---
>>>>>
>>>>> BTW: This  VERY interesting, you should
>>>>> consider writing a paper for the Insight Journal   :-)
>>>>>
>>>>>          http://www.insight-journal.org
>>>>>
>>>>>
>>>>>    Regards,
>>>>>
>>>>>
>>>>>          Luis
>>>>>
>>>>>
>>>>> -------------------------------------------------------
>>>>> On Wed, Feb 24, 2010 at 1:38 PM, Christian Werner
>>>>> <christian.werner at rwth-aachen.de> wrote:
>>>>>
>>>>>
>>>>>>
>>>>>> Hello!
>>>>>>
>>>>>> I wrote a nice VTK filter that incorporates ITK filters. It works fine
>>>>>> in a
>>>>>> VTK-only environment. I was able to compile it as a ParaView plugin
>>>>>> but
>>>>>> when
>>>>>> I want to use it, I get an error messages which seems to indicate some
>>>>>> missing ITK library or something:
>>>>>>
>>>>>> Attempting to load
>>>>>> /home/christian/.paraview-plugins/libSampleImageFilter.so
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> Failed to load the shared library.
>>>>>>> /home/christian/.paraview-plugins/libSampleImageFilter.so: undefined
>>>>>>> symbol:
>>>>>>> _ZN3itk11LightObject6DeleteEv
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> I attached my CMakeList.txt. There's no
>>>>>>
>>>>>> TARGET_LINK_LIBRARIES(
>>>>>>  ITKCommon ITKIO
>>>>>>  vtkCommon vtkIO
>>>>>> )
>>>>>>
>>>>>> or such in my CMakeList, but that does not seem to be a problem
>>>>>> anyway.
>>>>>> Everthing is compiled and linked just fine.
>>>>>>
>>>>>> Anyway, I tried
>>>>>>
>>>>>> TARGET_LINK_LIBRARIES(   vtkITKImageBox   #my library
>>>>>>  ITKBasicFilters
>>>>>> )
>>>>>>
>>>>>> or similar. But that turned into a cmake error:
>>>>>>
>>>>>> CMake Error at CMakeLists.txt:16 (TARGET_LINK_LIBRARIES):
>>>>>>  Cannot specify link libraries for target "vtkITKImageBox" which is
>>>>>> not
>>>>>>  built by this project.
>>>>>>
>>>>>> whereas ommitting one of the above libraries, e.g. writing:
>>>>>>
>>>>>> TARGET_LINK_LIBRARIES(   vtkITKImageBox
>>>>>> )
>>>>>>
>>>>>> works just fine. On the other hand it seems to be totally unnecessary
>>>>>> to
>>>>>> do
>>>>>> anything like that, because always everything compiles just fine, as
>>>>>> long as
>>>>>> cmake ran succesful. When I compile for VTK-only it won't compile if I
>>>>>> do
>>>>>> not add my library that I actually need for this filter...
>>>>>>
>>>>>> What do I have do write into my CMakeList??
>>>>>>
>>>>>>
>>>>>> Best regards,
>>>>>> Christian
>>>>>>
>>>>>>
>>>>>> # create a paraview plugin containing server manager xml and the
>>>>>> server
>>>>>> # manager classes to build
>>>>>> # this plugin can be loaded on the server side
>>>>>>
>>>>>> cmake_minimum_required(VERSION 2.4)
>>>>>>
>>>>>> PROJECT(vtkITKSampleImageFilter)
>>>>>>
>>>>>> INCLUDE("/home/christian/programming/pv-plugins/conf.cmake")
>>>>>>
>>>>>> #find and load ParaView settings
>>>>>> FIND_PACKAGE(ParaView REQUIRED)
>>>>>> INCLUDE(${PARAVIEW_USE_FILE})
>>>>>>
>>>>>> # Find ITK & VTK
>>>>>> FIND_PACKAGE(ITK REQUIRED)
>>>>>> INCLUDE(${ITK_USE_FILE})
>>>>>>
>>>>>>
>>>>>> ADD_PARAVIEW_PLUGIN(SampleImageFilter "1.0"
>>>>>>  SERVER_MANAGER_XML SampleImageFilter.xml
>>>>>>  #GUI_RESOURCE_FILES SampleImageFilterGUI.xml
>>>>>>  SERVER_MANAGER_SOURCES vtkITKSampleImageFilter.cxx
>>>>>> )
>>>>>>
>>>>>> _____________________________________
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>>>>>>
>>>>>> Visit other Kitware open-source projects at
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>>>>>>
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>>>>>> http://www.kitware.com/products/protraining.html
>>>>>>
>>>>>> Please keep messages on-topic and check the ITK FAQ at:
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>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>> _____________________________________
>>>> Powered by www.kitware.com
>>>>
>>>> Visit other Kitware open-source projects at
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>>>>
>>>> Kitware offers ITK Training Courses, for more information visit:
>>>> http://www.kitware.com/products/protraining.html
>>>>
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>>>
>>> _____________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
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>>>
>>> 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:
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>
>

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