Image Encryption Technology Based on Fractional Two-Dimensional Triangle Function Combination Discrete Chaotic Map Coupled with Menezes-Vanstone Elliptic Curve Cryptosystem

Table 8

NPCR and UACI between cipher-images with slightly different plain-images.

Image	NPCR and UACI of Lena
	NPCR (1-round %)	UACI (1-round %)	NPCR (2-round %)	UACI (2-round %)
Figure 11(a)(30, 30)	1.21	0.41	99.59	33.39
Figure 11(a)(50, 50)	95.06	31.93	99.59	33.53
Figure 11(a)(80, 80)	94.90	31.93	99.60	33.48
Figure 11(a)(100, 100)	1.71	0.58	99.63	33.40