A Segmentation of Melanocytic Skin Lesions in Dermoscopic and Standard Images Using a Hybrid Two-Stage Approach

Table 5

Comparative Jaccard index and Dice coefficient results for segmentation of images from the PH² and Dermofit atlases by U-net and the proposed method.

Group	Dermofit		PH^2 data
	Jaccard index	Dice coefficient	Jaccard index	Dice coefficient
U-net [40, 41]	0.781	0.887
U-net with illumination-based transformation [42]
Mutual bootstrapping DCNN [43]	—	—	0.894	0.942
FCN-16s [44]			0.802	0.881
Proposed method