'raw_detection_boxes': tf.constant([[[0.0, 0.0, 0.5, 0.5],
                                               [0.5, 0.5, 0.8, 0.8]],
                                              [[0.5, 0.5, 1.0, 1.0],
                                               [0.0, 0.5, 0.0, 0.5]]],
                                             tf.float32),