Debug problems

[ClingZhang]

Hello!
First of all thanks for sharing your code.
Use your topological loss as follows: loss = nn.CrossEntropyLoss() + lambda * getTopoLoss(lh, gt).
In the process of code debugging, there are several questions I would like to ask you:

1. The gt image has only a single connected domain. Is it not recommended to block the image, otherwise it cannot be guaranteed that the connected domains after the block are continuous on the overall image;
2. If the image needs to be divided into blocks, whether it is necessary to mark the background color around the divided image, there seems to be no such part in topoloss.py;
3. lh_cubic.persistence(homology_coeff_field=2, min_persistence=0), whether the min_persistence here needs to be debugged for the input image.

At present, during the running of the code, I don't know if the topological constraint is not very effective because gt has only one connected domain.
Looking forward to your reply.