Secure Smart Healthcare Monitoring in Industrial Internet of Things (IIoT) Ecosystem with Cosine Function Hybrid Chaotic Map Encryption

Table 12

CCs of two bordering pixels and its comparison through relative approaches.

Methods	Images		Plain images			Encrypted images
			H	V	D	H	V	D
Proposed	P002 (keyframe 2)	R	0.9578	0.9905	0.9511	2.3e-05	−4.3e-04	0.0032
		G	0.9560	0.9900	0.9505	0.0028	−9.1e-04	0.0033
		B	0.9570	0.9901	0.9500	5.2e-07	−3.3e-04	0.0011
[39]	RGB frame	R	0.99370	0.99010	0.98540	0.00120	−0.00270	0.00020
		G	0.99090	0.98340	0.98770	−0.00070	0.00210	−0.00100
		B	0.99310	0.98240	0.99010	0.00150	−0.00100	0.00070
[50]	Keyframe 5		0.9439	0.9880	0.9384	0.0051	−0.0033	0.0015
[84]	Jet plane		NA	NA	NA	0.0087	-0.0051	−0.0089
[66]	Baboon		0.9225	0.7860	0.8535	0.0012	0.0038	0.0011
[85]	Lena		0.967841	0.976007	0.954908	−0.001557	0.002225	0.000582
[86]	NA		0.9824	0.9632	0.9484	0.0016	0.0015	−0.0017
[73]	Airplane		0.9518	0.9751	0.9422	−0.0049	0.0019	0.0010
[75]	Lena		NA	NA	NA	0.0022	0.0022	−0.0019