Image Encryption Scheme Based on Block Scrambling, Closed-Loop Diffusion, and DNA Molecular Mutation

Table 7

Correlation coefficients of image “Peppers” obtained by other encryption schemes.

Direction	Ref. [36]	Ref. [37]	Ref. [38]	Ref. [39]	Ref. [40]	Our scheme
HD	0.0057	–0.0056	0.0234	0.0068	–0.0160	0.0021
VD	0.0037	–0.0162	0.0121	–0.0022	0.0350	0.0014
DD	0.0043	–0.0202	0.0005	0.0005	–0.0097	0.0002