Image Encryption Technology Based on Fractional Two-Dimensional Triangle Function Combination Discrete Chaotic Map Coupled with Menezes-Vanstone Elliptic Curve Cryptosystem

Table 2

Comparison of correlation coefficients of image.

Algorithm	Image	Original image			Encrypted image
		Horizontal	Vertical	Diagonal	Horizontal	Vertical	Diagonal
Proposed	Lena	0.9722	0.9527	0.9860	−0.0140	−0.0086	−0.0034
[1]	Lena	0.9503	0.9755	0.9275	−0.0226	0.0041	0.0368
[2]	Lena	0.927970	0.926331	0.839072	−0.010889	−0.018110	−0.006104
[5]	Lena	0.946	0.973	0.921	−0.0055	−0.0075	0.0026
[6]	Lena	0.9569	0.9236	0.9019	0.0042	−0.0043	0.0163