Chaotic Lightweight Cryptosystem for Image Encryption

Table 6

Comparison of correlation coefficients of encrypted image.

	Direction	Zhang et al. [13]	Patro et al. [18]	Raza and Satpute [19]	Bisht et al. [20]	Patro et al. [24]	Talhaouiet al. [28]	Zheng et al. [29]	Liu et al. [30]	Gupta et al. [31]	Lin and Wu [33]	Proposed method
Encrypted image	Horizontal	0.0082	0.0024	0.000561	−0.0012	0.0064	0.0039	0.6578	0.0020	0.0065	−0.0036	−0.00011
	Vertical	0.0032	0.0029	0.000578	−0.0170	0.0004	0.0059	0.7301	0.0035	0.0058	−0.0008	0.0024
	Diagonal	0.0150	−0.0039	0.001547	0.0148	−0.0095	−0.0050	0.6387	0.0027	—	−0.0017	−0.0012