> (http://luispedro.org/software/pymorph#see-also):
>
> "mahotas is another Python image processing package, but most of its
> functions are in C++. It is, therefore, much faster for the operations
> it supports."
>

Skeletonization with "pymorph" is indeed very very slow

I found very nice example how to do this just with "ndimage" and in a
blink of a second time:

========================================
def sk(i, r):
   x = ndimage.distance_transform_edt(i)
   y = ndimage.morphological_laplace(x, (r, r))
   return y < y.min()/2
========================================

For example in pylab mode:

In [1]: from scipy import ndimage
In [2]: im = imread('clip.png')[:,:,0]
In [3]: imshow(sk(im, 5), cmap='binary', interpolation='nearest')

_______________________________________________