Question about semantic class num

[Stay-Naive]

Hey, thanks for your great work!

When I tried to replicate your code recently, I found that your ISBNet code is a little different from the original code. In the original code, the num of semantic_classes is clearly defined to 20, but which is instance_classes + 1, i.e 19, in your part of code.

I am wondering what cause the difference. Previously, I noted that your have processed the wall_box in your GaPro. Does that cause the difference? And I did not see any code about how to prepare this part of data. Could you please provide more information?