Reversible Data Hiding with Pixel Prediction and Additive Homomorphism for Encrypted Image

Table 7

PSNRs under different embedding rates when r=1 (dB).

Image	Embedding rate (bpp)
	0.005	0.01	0.05	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9
Lena	63.55	60.55	58.03	50.38	46.88	44.61	42.73	40.74	37.96	35.14	33.98	31.56
Airplane	68.39	63.24	59.90	55.56	51.54	48.99	46.47	45.21	43.07	40.92	38.18	34.73
Barbara	63.82	60.82	53.58	50.26	46.88	44.61	42.64	40.74	37.55	34.60	32.01	29.81
Baboon	58.10	54.46	46.11	42.87	38.32	35.39	32.70	30.08	28.14	26.22	24.80	23.63
Peppers	65.12	61.66	51.96	48.22	44.20	41.76	40.30	38.59	37.50	36.39	35.08	33.58
Boats	65.18	62.25	54.98	51.69	48.48	46.44	44.74	42.98	40.69	38.53	36.16	34.12
Man	68.89	65.29	55.76	50.89	46.94	43.54	41.40	39.38	37.54	35.66	33.88	31.96
Tiffany	63.64	61.11	50.40	48.17	43.46	41.44	39.75	38.43	37.05	35.59	33.92	32.06
Average	64.59	61.17	53.84	49.76	46.33	43.35	41.34	39.52	37.44	35.38	33.50	31.43