No module named util

[lw19951231]

感谢作者的分享。
但当我运行test.sh，报错信息
Traceback (most recent call last):
File "test_pixel_link.py", line 8, in
from datasets import dataset_factory
File "/home/wen/TextDetection/pixel_link/datasets/dataset_factory.py", line 2, in
from datasets import dataset_utils
File "/home/wen/TextDetection/pixel_link/datasets/dataset_utils.py", line 21, in
import util
ImportError: No module named util
确实没有找到util这个文件，还望指点

[pymia]

have you updated the submodule as well?
try

.../pixel_link$ git submodule update --init --recursive
.../pixel_link$ git submodule update --recursive