A Color-Image Encryption Scheme Using a 2D Chaotic System and DNA Coding

Table 5

Correlation coefficient comparison for encrypted Lena image.

Correlation coefficient	Proposed scheme	Reference [34]	Reference [35]	Reference [49]	Reference [50]
Horizontal	−0.00462	0.0066	0.0082	0.0015	−0.0207
Vertical	−0.00219	0.0212	0.0032	0.0015	−0.0176
Diagonal	0.00201	0.0048	0.0150	0.0044	0.0168