[ITK] Query about building ITK on Windows 64-bit with Python Wrapping

Sat Apr 4 22:25:49 EDT 2015

Hi Evan,

Thanks for your persistance and sharing your experiences with the list!

To answer a previous question, it should not take so long to build the
wrapping. Using the Ninja generator, wrapping is built on the
dashboard in under 2 hours, including all the tests. To speed things
up, try disabling BUILD_TESTING and BUILD_EXAMPLES.  Also parallelize
your build as described here [1].

What version of Python are you using?

Thanks,
Matt

[1] http://www.kitware.com/blog/home/post/434

On Sat, Apr 4, 2015 at 4:19 AM, Evan Kao <tossin at gmail.com> wrote:
> Hi itk-users,
>
> I'm still having a lot of trouble importing ITK into Python.  If I add the
> following paths (specified in WrapITK.pth) to PYTHONPATH:
>
> ..\lib\Release
> ..\Wrapping\Generators\Python\Release
>
> and ..\bin\Release to PATH, then attempt to import itk, I get the following
> error:
>
>> Traceback (most recent call last):
>>   File "<console>", line 2, in <module>
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itk.py", line
>> 54, in <module>
>>     itkBase.LoadModule(module, thisModule.__dict__)
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itkBase.py",
>> line 53, in LoadModule
>>     swig.__dict__.update(this_module.swig.__dict__)
>> AttributeError: 'module' object has no attribute 'swig'
>
>
> If in itkConfig.py I set LazyLoading = False, and attempt to import itk, I
> get:
>
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in <module>
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itk.py", line
>> 54, in <module>
>>     itkBase.LoadModule(module, thisModule.__dict__)
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itkBase.py",
>> line 108, in LoadModule
>>     LoadModule(dep, namespace)
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itkBase.py",
>> line 108, in LoadModule
>>     LoadModule(dep, namespace)
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itkBase.py",
>> line 108, in LoadModule
>>     LoadModule(dep, namespace)
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itkBase.py",
>> line 108, in LoadModule
>>     LoadModule(dep, namespace)
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itkBase.py",
>> line 118, in LoadModule
>>     module = loader.load(swigModuleName)
>>   File "L:\git\ITK-build\Wrapping\Generators\Python\Release\itkBase.py",
>> line 225, in load
>>     fp, pathname, description = imp.find_module(name)
>> ImportError: No module named ITKPyBasePython
>
>
> So it seems like it can't find the python modules.  So I tried adding ..\lib
> to the PYTHONPATH and then imported itk and no errors appeared.  However if
> I try instantiating a class, I get:
>
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in <module>
>> TypeError: 'itkTemplate' object is not callable
>
>
> Anybody have any ideas on what's going on?  Or suggestions on how to
> proceed?
>
> Thanks,
> Evan Kao
>
> On Sun, Mar 22, 2015 at 12:19 AM, Evan Kao <tossin at gmail.com> wrote:
>>
>> Hello Bradley,
>>
>> Regarding registration, I'm just exploring options right now.  It seems
>> like SimpleITK 0.9b is the way to go then.
>>
>> I still attempted to build ITK 4.8 with python-wrapping on and a few
>> additional optional modules that I turned on mainly because they sounded
>> interesting (ITKConfig.cmake attached for reference) with Visual Studio
>> 2013/ver 12.  The build took about 12 hours (is that normal?) and seems to
>> have mostly succeeded other than a few errors in the optional modules (I
>> think they were in BridgeNumpy and VariationalRegistration).
>>
>> However I'm having some trouble using itk in python (same as the one
>> described here).  I've tried adding the WrapITK.pth file to site-packages as
>> well as directly adding both of the paths specified in WrapITK.pth directly
>> to the PYTHONPATH, but keep getting "AttributeError: 'module' object has no
>> attribute 'swig' " every time I attempt to use a filter.  Do you know how to
>> fix the issue?
>>
>> Thanks,
>> Evan Kao
>>
>> On Sat, Mar 21, 2015 at 8:29 AM, Bradley Lowekamp <blowekamp at mail.nih.gov>
>> wrote:
>>>
>>> Hello,
>>>
>>> WrapITK has recently been upgraded to use CastXML ( clang based ),
>>> instead of GCCXML. This appears to now be working MS VS12 ( aka Visual
>>> Studio 2013?) windows compiler[1]. This is relatively new and it would be
>>> great if you can checkout ITK master and try to build it and report how it
>>> works for you. The wiki hasn't been updated with this latest bit of
>>> information.
>>>
>>> However please keep in mind that WrapITK does not contain 100% of ITK and
>>> not 100% of Registration. For example it does contain the ITKv3
>>> ImageRegistationMethod however it doest not contain the new ITKv4
>>> ImageRegistration method or frame work. With effort this thing can be
>>> wrapped.
>>>
>>> If you have to resort to SimpleITK, you will find the binaries for
>>> window64 readily available from the nightly dashboard[2]. The best place to
>>> check if SimpleITK has the registration methods you need would be the
>>> doxygen[3]. It contains the ITKv4 Registration framework, as well as some
>>> legacy image registration filter. The frame work is capable of affines,
>>> bspline, and displacement transforms and many nice feature of the ITKv4
>>> framework.
>>>
>>> Do you have a specific registration method you are looking to do? or just
>>> explore some options?
>>>
>>> Brad
>>>
>>> [1] https://open.cdash.org/buildSummary.php?buildid=3738598
>>> [2] http://www.itk.org/Wiki/SimpleITK/GettingStarted#Nightly_binaries
>>> [3] http://www.itk.org/SimpleITKDoxygen/html/classes.html
>>>
>>> On Mar 21, 2015, at 3:17 AM, Evan Kao <tossin at gmail.com> wrote:
>>>
>>> Hello itk-users,
>>>
>>> I'd like to use ITK features in python that don't seem to be implemented
>>> in the latest stable release of SimpleITK, like image registration and
>>> quadmesh filters.  However, looking around the internet, several sources
>>> (like the Wiki, this thread from about 5 months ago, or this site) seem to
>>> suggest building WrapITK isn't possible on a 64-bit machine due to conflict
>>> between GCCXML and any Visual Studio beyond 2008 (and VS2008 64-bit
>>> apparently only comes with the professional edition, which I'm not even sure
>>> is available or worth obtaining).  The Wiki also suggests mingw64 is also
>>> not viable.  Is this still the case?   Is there anyway to use ITK with
>>> python on a 64-bit machine?
>>>
>>> If I have to resort to the latest nightly binary of SimpleITK for image
>>> registration, does it include all the registration methods available in ITK?
>>>
>>> Thanks,
>>> Evan Kao
>>> _______________________________________________
>>> Community mailing list
>>> Community at itk.org
>>> http://public.kitware.com/mailman/listinfo/community
>>>
>>>
>>
>
>
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