Securing Digital Images through Simple Permutation-Substitution Mechanism in Cloud-Based Smart City Environment

Table 3

Correlation coefficients of the experimented greyscale dataset.

Image	Direction
	Hor.	Ver.	Dia.
Boats	0.9713	0.9367	0.9212
Enc-boats	−0.0011	0.0004	−0.0005
Bridge	0.9270	0.9397	0.8937
Enc-bridge	0.0015	0.0004	0.0011
Baboon	0.7623	0.8641	0.7274
Enc-baboon	−0.0002	−0.0001	0.0011