Disable mask prediction.

object_detection/core/box_predictor.py

@@ -317,6 +317,8 @@ class MaskRCNNBoxPredictor(BoxPredictor):
     self._predict_instance_masks = predict_instance_masks
     self._mask_prediction_conv_depth = mask_prediction_conv_depth
     self._predict_keypoints = predict_keypoints
+    if self._predict_instance_masks:
+      raise ValueError('Mask prediction is unimplemented.')
     if self._predict_keypoints:
       raise ValueError('Keypoint prediction is unimplemented.')
     if ((self._predict_instance_masks or self._predict_keypoints) and

object_detection/models/faster_rcnn_inception_resnet_v2_feature_extractor.py

@@ -175,7 +175,7 @@ class FasterRCNNInceptionResnetV2FeatureExtractor(
     faster_rcnn_meta_arch.FasterRCNNFeatureExtractor which does not work for
     InceptionResnetV2 checkpoints.
 
-    TODO(jonathanhuang,rathodv): revisit whether it's possible to force the
+    TODO: revisit whether it's possible to force the
     `Repeat` namescope as created in `_extract_box_classifier_features` to
     start counting at 2 (e.g. `Repeat_2`) so that the default restore_fn can
     be used.