Table 4.

Comparison results of different normalization methods

Method	ACC	AUC	SENS	SPEC
Without normalization	0.774	0.8	0.563	0.819
Normalization using original masks	0.768	0.829	0.75	0.772
Normalization using dilated masks (the proposed method)	0.796	0.844	0.813	0.792