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

Table 8

Performance comparison with [14] with BER value.

Attack	Proposed	[14]
Average PSNR [dB]	40.30	40.88
Median Filtering	0.1682	0.0984
Gaussian Filtering	0.0920	0.0018
Cropping 25%	0.0024	0.1299
JPEG 80	0.0659	0.0000
JPEG 60	0.2774	0.0000
JPEG 40	0.3849	0.0020
Gaussian Noise	0.0086	0.0585
Salt & Pepper Noise	0.0381	0.2604
Contrast -20	0.0007	0.0426
Average robustness	0.1153	0.0660