tensorflow/models · error · ValueError

Unknown decoder type: {}!

Error message

Unknown decoder type: {}!

What it means

Error "Unknown decoder type: {}!" thrown in tensorflow/models.

Source

Thrown at official/projects/panoptic/tasks/panoptic_deeplab.py:103

      status = ckpt.read(ckpt_dir_or_file)
      status.expect_partial().assert_existing_objects_matched()

    logging.info('Finished loading pretrained checkpoint from %s',
                 ckpt_dir_or_file)

  def build_inputs(self,
                   params: exp_cfg.DataConfig,
                   input_context: Optional[tf.distribute.InputContext] = None):
    """Builds panoptic deeplab input."""
    decoder_cfg = params.decoder.get()

    if params.decoder.type == 'simple_decoder':
      decoder = panoptic_deeplab_input.TfExampleDecoder(
          regenerate_source_id=decoder_cfg.regenerate_source_id,
          panoptic_category_mask_key=decoder_cfg.panoptic_category_mask_key,
          panoptic_instance_mask_key=decoder_cfg.panoptic_instance_mask_key)
    else:
      raise ValueError('Unknown decoder type: {}!'.format(params.decoder.type))

    parser = panoptic_deeplab_input.Parser(
        output_size=self.task_config.model.input_size[:2],
        ignore_label=params.parser.ignore_label,
        resize_eval_groundtruth=params.parser.resize_eval_groundtruth,
        groundtruth_padded_size=params.parser.groundtruth_padded_size,
        aug_scale_min=params.parser.aug_scale_min,
        aug_scale_max=params.parser.aug_scale_max,
        aug_rand_hflip=params.parser.aug_rand_hflip,
        aug_type=params.parser.aug_type,
        sigma=params.parser.sigma,
        dtype=params.parser.dtype)

    reader = input_reader_factory.input_reader_generator(
        params,
        dataset_fn=dataset_fn.pick_dataset_fn(params.file_type),
        decoder_fn=decoder.decode,
        parser_fn=parser.parse_fn(params.is_training))

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/projects/panoptic/tasks/panoptic_deeplab.py:103 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/3eeac197c5baa749. Report an issue: GitHub.