A Lightweight Image Encryption Algorithm Based on Message Passing and Chaotic Map

Table 2

Correlation coefficients of adjacent pixels in plain- and cipher-images.

Scan direction	Lena		Peppers
	Plain	Cipher	Plain	Cipher
Horizontal	0.939751	0.00199	0.971686	0.00220
Vertical	0.968041	0.00354	0.977323	0.00249
Diagonal	0.919779	0.00265	0.953286	0.00029