From: Time-Frequency and Time-Scale-Based Fragile Watermarking Methods for Image Authentication
Example: Lena image | |||
---|---|---|---|
QF |
|
|
|
90% | 0 | 0.0728 | 0.4587 |
80% | 0.0068 | 0.1880 | 0.4802 |
70% | 0.0313 | 0.2847 | 0.4832 |
60% | 0.0781 | 0.3413 | 0.5034 |
50% | 0.1357 | 0.4214 | 0.4995 |
40% | 0.2168 | 0.4634 | 0.4978 |