gtboxes_and_label dont have fixed shape, why the function tf.train.batch() doesnt raise error?

[tsing-cv]

img_name_batch, img_batch, gtboxes_and_label_batch, num_obs_batch = \
        tf.train.batch(
                       [img_name, img, gtboxes_and_label, num_obs],
                       batch_size=batch_size,
                       capacity=1,
                       num_threads=1,
                       dynamic_pad=True)

@yangxue0827

[yangxue0827]

Maybe you need to read the source code. @tsing-cv