Table 2.

Comparison results of MRI/PET images fusion on Harvard dataset, with the best result in bold and the second-best result underlined.

Method	SCD	SSIM	MEF-SSIM	VIF	FMI
GFF [45]	0.850	0.764	0.873	0.414	0.559
PMGI [46]	1.096	0.248	0.874	0.387	0.376
U2Fusion [8]	0.283	0.226	0.837	0.232	0.336
FusionDN [33]	0.520	0.255	0.864	0.331	0.353
Proposed	1.117	0.746	0.938	0.467	0.405