code: def proj_points(points, M):
      return np.column_stack(proj_trans_points(points, M))
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from six.moves import zip
  import numpy
  import numpy.linalg
label_desc: Use image node_id 15 for calling a global function with example usage: proj_points(points, M) and returns: np