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

Table 10

Contrast values of the experimented color images.

Image	Original			Encrypted
	R	G	B	R	G	B
Sailboat	0.29432	0.48611	0.46158	10.48872	10.48024	10.50732
Airplane	0.18473	0.28502	0.13335	10.48935	10.52216	10.50711
Peppers	0.27514	0.30299	0.22137	10.50131	10.47429	10.53328