Survey on Reversible Watermarking Techniques of Echocardiography

Table 2

Embedding results with variant sizes of ROI.

2K				6K			10K
ROI size	Payload (bits)	Capacity of hiding (bpp)	PSNR	Payload (bits)	Capacity of hiding (bpp)	PSNR	Payload (bits)	Capacity of hiding (bpp)	PSNR
Ultrasound 1
4%	169,424	0.287	37.01	209,520	0.354	36.42	246,768	0.417	36.07
8%	260,704	0.441	35.99	299,760	0.507	35.54	335,312	0.567	35.28
12%	395,680	0.669	35.63	436,528	0.738	35.60	n/a	n/a	n/a
Ultrasound 2
4%	155,808	0.264	37.46	194,816	0.329	36.81	230,112	0.389	36.46
8%	245,376	0.415	36.45	283,872	0.480	36.09	319,024	0.539	35.86
12%	376,368	0.636	36.13	417,056	0.705	36.09	n/a	n/a	n/a
Ultrasound 3
4%	122,848	0.303	41.88	163,136	0.402	40.13	200,176	0.494	39.15
8%	207,776	0.512	39.36	245,824	0.606	38.34	281,200	0.694	37.75
12%	263,984	0.651	38.24	n/a	n/a	n/a	n/a	n/a	n/a
Ultrasound 4
4%	82,832	0.270	41.25	119,088	0.388	39.81	153,968	0.501	38.57
8%	151,552	0.493	38.84	191,024	0.622	37.94	n/a	n/a	n/a
12%	190,912	0.622	38.10	n/a	n/a	n/a	n/a	n/a	n/a