Table 14.

Comparison of the SSIM values of each sample image filtered using the variable level of BW of FMGFI (regarding edge preservation performance).

Image name	abwFMGFI	FMGFI
		BW = 1 level	BW = 3 level	BW = 5 level	BW = 11 level	BW = 21 level	BW = 51 level
Geometric pattern	0.998	0.989	0.999	0.998	0.995	0.992	0.966
Milkdrop	0.987	0.672	0.962	0.976	0.979	0.979	0.943
Balloon	0.990	0.737	0.968	0.979	0.986	0.987	0.982
Earth	0.990	0.609	0.917	0.959	0.979	0.983	0.956
Pepper	0.986	0.622	0.938	0.963	0.977	0.979	0.961