Table 3.

Average correlation coefficients of the original images and the cipher-images in four directions.

Image	Original-Image					Encrypted-Image
		V	H	D	A	V	H	D	A
Lena	R	0.9798	0.9893	0.9777	0.9697	0.0003	0.0040	0.0013	0.0021
	G	0.9689	0.9824	0.9653	0.9554	−0.0018	0.0005	0.0002	0.0009
	B	0.9325	0.9574	0.9253	0.9181	0.0019	−0.0093	0.0002	0.0005
baboon	R	0.9231	0.8660	0.8519	0.8543	0.0002	0.0019	−0.0005	0.0022
	G	0.8654	0.7650	0.7249	0.7348	−0.0019	−0.0046	0.0040	0.0010
	B	0.9072	0.8808	0.8424	0.8398	−0.0039	−0.0062	0.0013	0.0020
fruits	R	0.9936	0.9928	0.9897	0.9868	−0.0022	−0.0021	−0.0027	0.0010
	G	0.9855	0.9848	0.9783	0.9694	0.0069	0.0073	0.0021	−0.0016
	B	0.9265	0.9192	0.8809	0.8531	0.0007	0.0088	−0.0003	−0.0010
flowers	R	0.9718	0.9719	0.9504	0.9551	0.0045	−0.0002	−0.0005	0.0007
	G	0.9510	0.9497	0.9123	0.9218	0.0047	−0.0015	0.0026	0.0022
	B	0.9527	0.9527	0.9178	0.9256	0.0004	−0.0032	0.0019	−0.0008