def test_gather_with_invalid_field_specified(self):
indices = np.array([2, 0, 1], dtype=int)
boxlist = self.boxlist
with self.assertRaises(ValueError):
np_box_list_ops.gather(boxlist, indices, 'labels')
with self.assertRaises(ValueError):
np_box_list_ops.gather(boxlist, indices, ['objectness'])
def test_gather_with_fields_specified(self):
indices = np.array([2, 0, 1], dtype=int)
boxlist = self.boxlist
subboxlist = np_box_list_ops.gather(boxlist, indices, ['labels'])
self.assertFalse(subboxlist.has_field('scores'))
expected_boxes = np.array([[0.0, 0.0, 20.0, 20.0], [3.0, 4.0, 6.0, 8.0],
[14.0, 14.0, 15.0, 15.0]],
dtype=float)
self.assertAllClose(expected_boxes, subboxlist.get())
expected_labels = np.array([[0, 0, 0, 0, 1], [0, 0, 0, 1, 0],
[0, 1, 0, 0, 0]],
dtype=int)
self.assertAllClose(expected_labels, subboxlist.get_field('labels'))
def test_gather_with_invalid_multidimensional_indices(self):
indices = np.array([[0, 1], [1, 2]], dtype=int)
boxlist = self.boxlist
with self.assertRaises(ValueError):
np_box_list_ops.gather(boxlist, indices)
def test_gather_with_out_of_range_indices(self):
indices = np.array([3, 1], dtype=int)
boxlist = self.boxlist
with self.assertRaises(ValueError):
np_box_list_ops.gather(boxlist, indices)