Question about Edge to face？

[Finger-tiao]

Hi, I followed your code to train and test it but still got many questions:

When I test the edge2face I found that does not need to provide a semantic segmentation mask.
Does that mean that the semantic input is only to generate a clearer edge with canny? ?
If in the case, then edge2face will not have semantic transfer message?
I really have no ideas.