tensorflow/models · error · ValueError

`segmentation_decoder` needs to be provided for Panoptic Mas

Error message

`segmentation_decoder` needs to be provided for Panoptic Mask R-CNNif `backbone` is not shared.

What it means

Error "`segmentation_decoder` needs to be provided for Panoptic Mask R-CNNif `backbone` is not shared." thrown in tensorflow/models.

Source

Thrown at official/projects/panoptic/modeling/panoptic_maskrcnn_model.py:141

        outer_boxes_scale=outer_boxes_scale,
        use_gt_boxes_for_masks=use_gt_boxes_for_masks,
        **kwargs)

    self._config_dict.update({
        'segmentation_backbone': segmentation_backbone,
        'segmentation_decoder': segmentation_decoder,
        'segmentation_head': segmentation_head
    })

    if panoptic_segmentation_generator is not None:
      self._config_dict.update(
          {'panoptic_segmentation_generator': panoptic_segmentation_generator})

    if not self._include_mask:
      raise ValueError(
          '`mask_head` needs to be provided for Panoptic Mask R-CNN.')
    if segmentation_backbone is not None and segmentation_decoder is None:
      raise ValueError(
          '`segmentation_decoder` needs to be provided for Panoptic Mask R-CNN'
          'if `backbone` is not shared.')

    self.segmentation_backbone = segmentation_backbone
    self.segmentation_decoder = segmentation_decoder
    self.segmentation_head = segmentation_head
    self.panoptic_segmentation_generator = panoptic_segmentation_generator

  def call(self,
           images: tf.Tensor,
           image_info: tf.Tensor,
           anchor_boxes: Optional[Mapping[str, tf.Tensor]] = None,
           gt_boxes: Optional[tf.Tensor] = None,
           gt_classes: Optional[tf.Tensor] = None,
           gt_masks: Optional[tf.Tensor] = None,
           gt_outer_boxes: Optional[tf.Tensor] = None,
           training: Optional[bool] = None) -> Mapping[str, tf.Tensor]:
    image_shape = image_info[:, 1, :]

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/projects/panoptic/modeling/panoptic_maskrcnn_model.py:141 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/0bcdbf6c2b388a47. Report an issue: GitHub.