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

Table 6

Embedding rates and PSNR of the directly decrypted images with r=4.

Image		Lena	Airplane	Barbara	Baboon	Peppers	Boats	Man	Tiffany
tau		222009	249026	-	-	274612	224970	-	267648
t1		74003	83009	-	-	91537	74990	-	89216
t2		237	447	-	-	111	274	-	384
t3		2119	2068	-	-	2017	2116	-	2032
t4		55427	64158	-	-	73374	59165	-	72876
EC	bit	299423	200822	-	-	105808	277426	-	122896
	bpp	1.1422	0.766	-	-	0.404	1.0583	-	0.469
PSNR(dB)		14.0578	14.0551	-	-	13.638	15.1664	-	13.8975