FPGA Implementation of Digital Images Watermarking System Based on Discrete Haar Wavelet Transform

Table 2

NC and PSNR values for watermarked and attacked images by JPEG-2000 compression.

Ratio ()	PSNR				NC
	Cameraman	Mandrill	Lena	Pepper	Cameraman	Mandrill	Lena	Pepper
10	44.05	42.10	44.05	40.15	1	1	1	1
20	39.09	38.47	39.09	38.19	1	1	1	1
30	37.36	36.61	37.36	34.55	1	1	1	1
40	37.04	35.23	37.04	32.76	0.957	0.925	0.962	0.941
50	36.12	34.19	36.12	30.17	0.872	0.870	0.771	0.868
60	35.68	33.12	35.68	28.9	0.764	0.753	0.694	0.772
70	35.24	31.82	35.03	25.01	0.744	0.679	0.690	0.679
80	34.73	29.95	34.21	23.66	0.730	0.520	0.654	0.453
90	31.34	26.78	32.91	22.12	0.665	0.489	0.618	0.432