import tensorflow as tf

    self.assertAllEqual(
        padded_tensor_dict[fields.InputDataFields.image].shape.as_list(),
        [None, None, 3])

  def test_images_and_additional_channels(self):
    input_tensor_dict = {
        fields.InputDataFields.image:
            tf.placeholder(tf.float32, [None, None, 5]),
        fields.InputDataFields.image_additional_channels:
            tf.placeholder(tf.float32, [None, None, 2]),
    }
    padded_tensor_dict = inputs.pad_input_data_to_static_shapes(
        tensor_dict=input_tensor_dict,
        max_num_boxes=3,
