import tensorflow as tf

      nas_training_hyper_parameters=nas_training_hyper_parameters)

  if model_options.decoder_output_stride:
    crop_size = model_options.crop_size
    if crop_size is None:
      crop_size = [tf.shape(images)[1], tf.shape(images)[2]]
    features = refine_by_decoder(
        features,
        end_points,
        crop_size=crop_size,
