read_label_map_tsv
========================================

.. py:function:: petpal.utils.image_io.read_label_map_tsv(label_map_file: str) -> dict | pandas.DataFrame

   Static method to read a label map, translating region indices to region names,
   as a dictionary. Assumes tsv format.

   :param label_map_file: Path to a json-formatted label map file.
   :type label_map_file: str

   :returns: *label_map (pd.DataFrame)* --

             Dataframe matching region indices, names,
                 abbreviations, and mappings.

   :raises FileNotFoundError: If the provided ctab file cannot be found in the directory.