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

Table 5

Embedding rates and PSNR of the directly decrypted images with r=3.

Image		Lena	Airplane	Barbara	Baboon	Peppers	Boats	Man	Tiffany
tau		105911	115441	151522	246246	145015	119466	133242	129437
t1		35304	38480	50507	82082	48338	39822	44414	43146
t2		24	432	181	350	302	114	130	374
t3		2347	2329	2257	2074	2272	2320	2293	2302
t4		19058	21356	41230	87028	29270	21717	26726	24569
EC	bit	510394	483200	352385	25584	400871	475047	432504	445822
	bpp	1.947	1.8433	1.3442	0.0975	1.5292	1.8122	1.6499	1.7007
PSNR(dB)		18.1015	18.5971	17.0775	14.771	17.3412	18.2071	17.295	16.6696