Protection of Health Imagery by Region Based Lossless Reversible Watermarking Scheme

Table 2

Embedding performance of PET image of size .

ROI size	Watermark size (bits)	MSE	PSNR (dB)
	3923	0.445557	51.6
	6040	0.688232	49.8
	12749	1.503662	46.4
	19770	1.929932	45.3
	25870	2.374817	44.4
	28586	2.571472	44
	34770	2.908081	43.5
	41314	2.964966	43.4
	47339	3.190796	43.1