Table 7 Extraction rates in JPEG compression of quality 90%.
From: Digital Watermarking Method Warranting the Lower Limit of Image Quality of Watermarked Images
| Â | sameQ | maxQ | ||||
|---|---|---|---|---|---|---|
| Â | MTF | JPEG75 | JPEG50 | MTF | JPEG75 | JPEG50 |
aerial | 89.06 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
airplane | 57.81 | 53.13 | 71.88 | 93.75 | 100.00 | 100.00 |
balloon | 57.81 | 78.13 | 89.06 | 82.81 | 96.88 | 98.44 |
couple | 59.38 | 42.19 | 89.06 | 100.00 | 98.44 | 100.00 |
earth | 89.06 | 92.19 | 96.88 | 100.00 | 100.00 | 100.00 |
girl | 23.44 | 28.13 | 54.69 | 79.69 | 100.00 | 100.00 |
lenna | 98.44 | 98.44 | 95.31 | 100.00 | 100.00 | 100.00 |
mandrill | 70.31 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
milkdrop | 87.50 | 96.88 | 98.44 | 100.00 | 100.00 | 100.00 |
parrots | 50.00 | 92.19 | 96.88 | 93.75 | 98.44 | 98.44 |
pepper | 95.31 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
sailboat | 68.75 | 81.25 | 98.44 | 100.00 | 100.00 | 100.00 |