title: OpenCV-Python: What is correct shape of points for finding epipolar lines?
body: <p>I'm having trouble using the computeCorrespondEpilines() function in OpenCV-Python. According to the documentation, the matrix of points is described as: </p>
  
  <p>"Input points. N x 1 or 1 x N matrix of type CV_32FC2 or vector&lt; Point2f >"</p>
  
  <p>However, I'm not sure what this means in Python. I tried using a list of tuples but it was not a Numpy array, so I tried a Numpy array of tuples but it automatically converts to a Nx2 matrix. I also tried a Numpy structured array as a list of tuples, but the epilines function then says "points data type = 20 is not supported" which literally has 0 results in Google.</p>
  
  <p>Does anyone know what is the correct shape/type of the matrix of points needed for this function?</p>