the ouput images are black when I use Pascal data to train

[Jialeen]

I used two class of Pascal and pre-trained model: pre-trained Resnet v2 101 model. The label set was as follows:
label_colours = [(0, 0, 0), # 0=background
# 15=person
(192, 128, 128)]
However, when I used images to test, the output was all black.
So, what can I do to solve this problem.
Thanks

[Leonliou]

i have the same problem,,,do you solve this problem？