class_docstr: Rescales an image observation by some factor. For example, the image size
  can be reduced by a factor of 2.
docstr: :param rescale_factor: the factor by which the observation will be rescaled
code: def __init__(self, rescale_factor: float):
      """
      :param rescale_factor: the factor by which the observation will be rescaled
      """
      super().__init__()
      self.rescale_factor = float(rescale_factor)
  
file_path: coach/rl_coach/filters/observation/observation_rescale_size_by_factor_filter.py
imports: from skimage.transform import resize
  from rl_coach.core_types import ObservationType
  from rl_coach.filters.observation.observation_filter import ObservationFilter
  from rl_coach.spaces import ObservationSpace
label_desc: Use image node_id 1 to create a new ObservationRescaleSizeByFactorFilter object from inherited base classes: ObservationFilter with example: obj = ObservationRescaleSizeByFactorFilter(rescale_factor)