title: Going from numpy array to itk Image
body: <p>I have a numpy array and want to convert it into an ITK image for further processing.  How do I do this without using the PyBuffer extension to WrapITK.  I can't use that because I get a bunch of errors when compiling:</p>
  
  <pre><code>.../ExternalProjects/PyBuffer/itkPyBuffer.txx: In static member function ‘static PyObject* itk::PyBuffer&lt;TImage&gt;::GetArrayFromImage(TImage*) [with TImage = itk::Image&lt;float, 2u&gt;]’:
  .../ExternalProjects/PyBuffer/wrap_itkPyBufferPython.cxx:1397:   instantiated from here
  .../ExternalProjects/PyBuffer/itkPyBuffer.txx:64: error: cannot convert ‘int*’ to ‘npy_intp*’ in argument passing
  </code></pre>
  
  <p>I could use an idea about either how to fix the compilation errors or another way to convert my python objects.</p>