Security Analysis of Image Scrambling Cipher Based on Compound Chaotic Equation

Table 1

Correlation coefficients of adjacent pixels of plaintext and ciphertext.

	Plaintext	Ciphertext	Origin image
Horizontal direction	0.9713	0.0034	0.5001
Vertical direction	0.9864	0.0051	0.4998
Diagonal direction	0.9448	0.0109	0.5000