Test and predicted mask always returns zero

[ahmetfurkaann]

I'm doing multiclass segmentation and it returns me the mask with a black value of 0, both in the validation part and in the prediction part.

[naguileraleal]

Hello! I have the same issue. Did you manage to solve it @ahmetfurkaann ? How are your input masks formatted? Do the files have a channel for each class, each with 1's or 255's? Or just two channels and a class index for each pixel?