From: Digital Watermarking Method Warranting the Lower Limit of Image Quality of Watermarked Images
 | MTF | JPEG50 | JPEG75 | |||
---|---|---|---|---|---|---|
 | sameQ | maxQ | sameQ | maxQ | sameQ | maxQ |
aerial | 0.9954 | 0.9972 | 0.9415 | 0.9514 | 0.9640 | 0.9702 |
airplane | 0.9952 | 0.9980 | 0.9551 | 0.9710 | 0.9720 | 0.9841 |
balloon | 0.9973 | 0.9986 | 0.9614 | 0.9765 | 0.9757 | 0.9855 |
couple | 0.9881 | 0.9940 | 0.9603 | 0.9698 | 0.9713 | 0.9806 |
earth | 0.9933 | 0.9965 | 0.9692 | 0.9776 | 0.9813 | 0.9868 |
girl | 0.9739 | 0.9872 | 0.9550 | 0.9703 | 0.9684 | 0.9807 |
lenna | 0.9750 | 0.9912 | 0.9562 | 0.9703 | 0.9738 | 0.9814 |
mandrill | 0.9811 | 0.9911 | 0.9211 | 0.9449 | 0.9588 | 0.9696 |
milkdrop | 0.9700 | 0.9840 | 0.9551 | 0.9650 | 0.9704 | 0.9768 |
parrots | 0.9826 | 0.9933 | 0.9578 | 0.9733 | 0.9756 | 0.9831 |
pepper | 0.9603 | 0.9782 | 0.9629 | 0.9733 | 0.9765 | 0.9819 |
sailboat | 0.9889 | 0.9953 | 0.9662 | 0.9788 | 0.9802 | 0.9882 |