Table 1.

Quantitative analysis of GFF [30] and proposed schemes.

Quantitative measures	Example  1		Example  2		Example  3		Example  4
	GFF [30]	Proposed	GFF [30]	Proposed	GFF [30]	Proposed	GFF [30]	Proposed
ζ MI	0.2958	0.2965	0.4803	0.5198	0.4164	0.4759	0.4994	0.5526
ζ SSIM	0.3288	0.3540	0.3474	0.3519	0.3130	0.3139	0.2920	0.2940
ζ XP	0.4034	0.5055	0.4638	0.4678	0.4473	0.4901	0.4498	0.4653
ζ Z	0.1600	0.1617	0.3489	0.3091	0.2061	0.2193	0.3002	0.2855
ζ P1	0.4139	0.4864	0.2730	0.3431	0.2643	0.3247	0.2729	0.3339
ζ P2	0.4539	0.7469	0.5188	0.6387	0.6098	0.7453	0.5268	0.6717
ζ VIFF	0.2561	0.3985	0.1553	0.2968	0.1852	0.3009	0.1842	0.3487