Table 7.

Comparison of NPCR with state-of-the-art schemes

Image (256 × 256)	Proposed scheme	X. Chai et al. (2019) [8]	S. S. Askar et al. (2019) [5]	Y. Wan et al. (2020) [31]	J. Ferdush et al. (2021) [9]
Lena	99.58	99.62	99.60	99.59	99.37
Cameraman	99.58	-	-	99.60	-