Blind Image Watermarking Based on Adaptive Data Spreading in n-Level DWT Subbands

Table 7

Performance comparison with [15] with NCC value.

Attack	Proposed	[15]
Average PSNR [dB]	39.69	39.87
JPEG quality 80	0.9971	0.9559
JPEG quality 60	0.8805	0.8040
Gaussian Noise 0.5	1.0000	0.8460
Salt & Pepper Noise	0.8437	0.9388
Median Filtering 33	0.7364	0.8743
Average Filtering 33	0.8082	0.9912
Gaussian Filtering 33	0.9381	0.9912
Average robustness	0.8863	0.9145