box_list_ops_test.py 文件源码

def test_gather_with_dynamic_indexing(self):
    corners = tf.constant([4 * [0.0], 4 * [1.0], 4 * [2.0], 4 * [3.0], 4 * [4.0]
                          ])
    weights = tf.constant([.5, .3, .7, .1, .9], tf.float32)
    indices = tf.reshape(tf.where(tf.greater(weights, 0.4)), [-1])
    expected_subset = [4 * [0.0], 4 * [2.0], 4 * [4.0]]
    expected_weights = [.5, .7, .9]

    boxes = box_list.BoxList(corners)
    boxes.add_field('weights', weights)
    subset = box_list_ops.gather(boxes, indices, ['weights'])
    with self.test_session() as sess:
      subset_output, weights_output = sess.run([subset.get(), subset.get_field(
          'weights')])
      self.assertAllClose(subset_output, expected_subset)
      self.assertAllClose(weights_output, expected_weights)