Research Article
Host Feasibility Investigation to Improve Robustness in Hybrid DWT+SVD Based Image Watermarking Schemes
Table 2
Average of NC for “S” coefficients in first and second level of SVD for 9 images 1024
1024.
| Attacks | Gaussian 0.01 | Gamma correction 0.1 | AVG filter 33 | Crop 1/4 | S&P 0.01 | Scaling 1/2 | Speckle 0.01 | Median 33 | Rot 50 |
| | 0.9702 | 0.9986 | 0.9704 | 0.9959 | 0.9704 | 1 | 0.9705 | 0.9703 | 0.9887 | | 0.9587 | 0.9875 | 0.9522 | 0.9935 | 0.9602 | 0.9984 | 0.9596 | 0.9555 | 0.9878 |
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