Table 3 Comparison of watermarking capacity estimation in bits (images are 
).
).From: Estimating Watermarking Capacity in Gray Scale Images Based on Image Complexity
Noise variance | Capacity in bits, in Zhang method [9] | Capacity in bits, in proposed method | ||
|---|---|---|---|---|
| Â | Fishing boat | Lena | Fishing boat | Lena |
1 | 128,032 | 80,599 | 106,619 | 73,896 |
2 | 110,410 | 65,541 | 90,411 | 60,917 |
3 | 98,309 | 55,724 | 78,400 | 52,143 |
4 | 89,214 | 48,677 | 70,417 | 45,387 |
5 | 82,005 | 43,319 | 64,944 | 41,189 |
6 | 76,088 | 39,082 | 58,886 | 36,950 |
7 | 71,106 | 35,635 | 55,405 | 34,635 |
8 | 66,833 | 32,769 | 51,439 | 32,340 |
9 | 63,113 | 30,344 | 47,735 | 29,423 |
10 | 59,835 | 28,263 | 45,607 | 28,370 |
