Table 4. Performance of the five models on tissue classification inside ulcerations.

	IoU score	F1 score	Precision	Recall	Accuracy	Loss
U-Net	0.9830	0.9905	0.9913	0.9897	0.9899	0.0094
DeepLabV3	0.9834	0.9915	0.9915	0.9915	0.9957	0.0084
PsPnet	0.9390	0.9753	0.9614	0.9897	0.9899	0.0094
FPN	0.8252	0.9014	0.8615	0.9507	0.9508	0.0986
Mask R-CNN	0.7886	0.8480	0.9191	0.7871	0.8903	0.2032