% nosetests -vs -a '!gpu' tests
test_backward_cpu (test_assemble_2d.TestAssemble2D) ... ok
test_forward_cpu (test_assemble_2d.TestAssemble2D) ... ok
test_draw_instance_boxes.test_draw_instance_boxes ... ok
test_label2instance_boxes.test_label2instance_boxes ... ok
test_label_to_bboxes.test_label_to_bboxes ... ok
test_mask_to_bbox.test_mask_to_bbox ... ok
test_resize_image.test_resize_image ... ok
----------------------------------------------------------------------
Ran 7 tests in 2.610s
OK
Make captions as optional.