title: Opencv 2.4.3 estimateRigidTransform in python
body: <p>This is really a mess for me and I have a hard time trying to solve this. I want to use the method cv2.estimateRigitTransform in Python with numpy arrays but I can't find anywhere an example or something else that explains the format of the src and dst numpy arrays needed.</p>
  
  <p>Could somebody send me a little example of these 2 arrays that will work with this method? I have all the data (in 2D of course) but can't find how to shape it in a numpy array.</p>
  
  <p>Please help me.
  Thank you!</p>