Survey on Reversible Watermarking Techniques of Echocardiography

Table 3

Medical image capacity and PSNR.

Positive threshold	Heart	Brain	Kidney	Liver	Ultrasound
Embedding capacity
2	0.0007	0.0058	0.0048	0.0050	0.0010
5	0.0047	0.0065	0.0079	0.0060	0.0014
7	0.0048	0.0070	0.0230	0.0068	0.0015
10	0.0052	0.0074	0.0250	0.0076	0.0120
15	0.0396	0.0098	0.0312	0.0085	0.0170
PSNR
2	74.31	73.67	75.25	72.88	63.13
5	64.51	72.17	68.07	63.21	60.66
7	63.94	66.18	64.80	59.11	55.40
10	61.95	58.41	59.43	54.35	55.35
15	53.86	50.21	52.45	48.75	43.89