tensorflow/models · error · ValueError

The label map file is in incorrect format.

Error message

The label map file is in incorrect format.

What it means

Error "The label map file is in incorrect format." thrown in tensorflow/models.

Source

Thrown at official/vision/dataloaders/tf_example_label_map_decoder.py:48

               mask_binarize_threshold=None):
    super(TfExampleDecoderLabelMap, self).__init__(
        include_mask=include_mask, regenerate_source_id=regenerate_source_id,
        mask_binarize_threshold=mask_binarize_threshold)
    self._keys_to_features.update({
        'image/object/class/text': tf.io.VarLenFeature(tf.string),
    })
    name_to_id = self._process_label_map(label_map)
    self._name_to_id_table = tf.lookup.StaticHashTable(
        tf.lookup.KeyValueTensorInitializer(
            keys=tf.constant(list(name_to_id.keys()), dtype=tf.string),
            values=tf.constant(list(name_to_id.values()), dtype=tf.int64)),
        default_value=-1)

  def _process_label_map(self, label_map):
    if label_map.endswith('.csv'):
      name_to_id = self._process_csv(label_map)
    else:
      raise ValueError('The label map file is in incorrect format.')
    return name_to_id

  def _process_csv(self, label_map):
    name_to_id = {}
    with tf.io.gfile.GFile(label_map, 'r') as f:
      reader = csv.reader(f, delimiter=',')
      for row in reader:
        if len(row) != 2:
          raise ValueError('Each row of the csv label map file must be in '
                           '`id,name` format. length = {}'.format(len(row)))
        id_index = int(row[0])
        name = row[1]
        name_to_id[name] = id_index
    return name_to_id

  def _decode_classes(self, parsed_tensors):
    return self._name_to_id_table.lookup(
        parsed_tensors['image/object/class/text'])

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/vision/dataloaders/tf_example_label_map_decoder.py:48 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of tensorflow/models@e006f5f0d5 (2026-08-24). Data as JSON: /api/errors/ca61c9d1394de675. Report an issue: GitHub.