Reversible Data Hiding Based on Multiple Pairwise PEE and Two-Layer Embedding

Table 4

Parameters of the proposed scheme, for images Lena, Boat, and Lake with different capacities.

Image	Capacity	Block size		Layer		Mode (1–8)		PSNR
Lena	10,000		2	Shadow	53	(12.5%, 14.7%, 9%, 10.9%, 10.9%, 15.7%, 10.1%, 16.5%)	(34, 19, 0, 0, 0, 0, 0, 0)	61.15
				Blank	56	(12.4%, 15.2%, 9%, 10.6%, 10.6%, 16%, 10.5%, 16.1%)	(45, 11, 0, 0, 0, 0, 0, 0)
Boat	20,000		4	Shadow	140	(14.7%, 13.2%, 11%, 11.7%, 12.7%, 11.9%, 11.1%, 13.3%)	(53, 37, 27, 23, 0, 0, 0, 0)	54.84
				Blank	155	(14.6%, 13.7%, 12%, 12.1%, 12.5%, 11.7%, 10.8%, 12.9%)	(77, 32, 24, 22, 0, 0, 0, 0)
Lake	30,000		8	Shadow	216	(11.6%, 14.8%, 12%, 14.4%, 9.3%, 12.9%, 10.3%, 14.4%)	(44, 54, 30, 29, 15, 11, 18, 15)	52.01
				Blank	206	(11.2%, 15.2%, 12%, 14.3%, 9.6%, 12.8%, 10.8%, 14.3%)	(34, 46, 31, 31, 22, 15, 13, 14)