Development of a Novel Hyperchaos-Based Image Encryption Algorithm Consisting of Two Scrambling-Diffusion Operations

Table 4

NPCR and UACI of cipher images.

Encryption algorithm	Image	NPCR (%)	UACI (%)
Present in this study	Baboon	99.593734	33.544325
Present in this study	Lena	99.590302	33.462442
Present in this study	Airplane	99.600983	33.481864
Present in this study	Pepper	99.602127	33.453822
[31]	Lena	99.62	33.46
[37]	Lena	99.63	33.56
[38]	Lena	99.6227	33.51964