[Retracted] Research on Digital Image Watermarking Algorithm Based on Scrambling and Singular Value Decomposition

Table 4

Test results of resistance to attack.

Attack type	Paper algorithm	Reference [7] algorithm	Reference [8] algorithm
Not attacked	1	1	1
MP3 compression	0.89	0.83	0.77
Random shear	0.98	0.82	0.84
Low pass filtering	0.99	0.83	0.73
Downsampling attack	1	0.90	0.85
Adding Gaussian white noise	0.99	0.72	0.91
Denoising attack	1	0.80	0.80
Gravimetric	0.98	0.84	0.81
Upsampling attack	0.99	0.73	0.85
Mean value	0.98	0.83	0.84