I agree completely but that’s not what I meant.
I mean there is a simple algorithm to calculate a bbox from a segmentation map:
x1 = smallest x that has 1 in map
y1 = smallest y that has 1 in map
x2 = highest x that has 1 in map
y2 = highest y that has 1 in map
so I don’t understand why we pass bboxes during training. We don’t need to pass them. They are easily calculated from the maps