TABLE 2.

The performance of four‐class segmentation model.

Class	Precision	Recall	Dice score	IoU
Background	0.961	0.972	0.966	0.935
Other tissue	0.880	0.874	0.877	0.781
Normal epithelial tissue	0.808	0.770	0.789	0.652
Tumor regions (BCC+TE)	0.910	0.869	0.889	0.800

Note: Normal epithelial tissue containing epidermis and hair follicle.

Abbreviations: BCC, basal cell carcinoma; IoU, intersection over union; TE, trichoepithelioma.