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

Table 6

Comparison of PSNR for the capacity of 20,000 bits, where the unit is dB.

Image	[17]	[27]	[30]	[35]	[31]	Proposed
Lena	55.04	56.22	56.98	57.00	57.10	57.45
Barbara	55.04	56.23	56.72	56.70	57.00	57.38
Boat	52.64	53.32	54.23	54.45	54.43	54.84
Elaine	52.00	52.91	53.48	54.08	53.70	54.06
Lake	52.70	53.70	54.78	55.40	55.00	55.74
Peppers	52.30	52.83	55.31	55.25	55.45	55.89
Average	53.29	54.20	55.25	55.48	55.45	55.88