class_docstr: Class for modeling a non-linear 2D localization problem.
  
  The state is composed of a planar orientation and position, and is thus a
  member of SE(2).
  A sensor provides the linear and angular speed, while another one provides
  sparse position observations.
code: def __init__(self):
      self.group = SpecialEuclidean(2, point_type="vector", equip=False)
      self.dim_noise = 3
      self.dim_obs = 2
  
imports: import geomstats.backend
  from geomstats.geometry.euclidean import Euclidean
  from geomstats.geometry.matrices import Matrices
  from geomstats.geometry.special_euclidean import SpecialEuclidean
label_desc: Use image node_id 1 to create a new Localization object  with example: obj = Localization()