A New Chaos-Based Color Image Encryption Scheme with an Efficient Substitution Keystream Generation Strategy

Table 2

Differential images used in NPCR and UACI tests.

Test image name	Color channel	Pixel position	Pixel value
		(x, y)	Original	Modified
Baboon	G	(29, 130)	66	65
House	G	(182, 179)	35	36
Lena	B	(425, 39)	121	122
Peppers	R	(428, 144)	123	122
Portofino	R	(306, 294)	64	65