A Hybrid Chaotic and Number Theoretic Approach for Securing DICOM Images

Table 6

Performance comparison.

	Horizontal correlation	Vertical correlation	Diagonal correlation	NPCR (in %)	UACI (in %)	Entropy
Ravichandran et al. [16]	−0.0519	−0.0385	0.00046	99.996	33.37	7.9992
Praveenkumar et al. [15]	0.0033	−0.0033	0.0117	99.62	33.45	7.9975
Zhang et al. [20]	0.0193	−0.0154	0.0032	NA	NA	NA
Chen et al. [21]	0.0122	−0.0061	−0.0197	NA	NA	7.993
Fu et al. [13]	0.0037	0.0018	−0.0011	99.61	33.45	7.9992
Proposed work (Average)	0.0030	0.0017	0.0010	99.6001	33.4738	7.9976