Can I get the crack of a picture that is taken by myself?

[citystrawman]

Hi, I am trying to use this code to get the crak of a picture that is taken by myself.
I followed the steps described in Readme and I use sh ./scripts/train_deepcrack.sh <gpu_id> for training.
Then I would like to do Crack Detection by executing sh ./scripts/test_deepcrack.sh <gpu_id>.
From my perspective I should add the new testing pictures to datasets/DeepCrack/test_img and by executing sh ./scripts/test_deepcrack.sh <gpu_id> I would get the identified crack images in datasets/DeepCrack/test_lab, however, the program not only requires the images in test_img folder, but also requires images in test_lab, which I thought would be the identified results.
I appreciate if anyone could explain this question to me.