Research Article
DCT Watermarking Approach for Security Enhancement of Multimodal System
Table 6
EER of combine model in different clauses.
| | Clauses | EER (%) | | Fingerprint | Iris |
| | Without watermarking | 6.20 | 3.2 | | With watermarking | | | | Without attacks | 6.40 | 3.6 | | Host image attacked by compression (50%) | 6.49 | 3.6 | | Median filtering (3 × 3) | 6.45 | 3.64 | | Gaussian filtering (7 × 7) | 6.69 | 3.70 | | Contrast adjustment (Gamma = 0.7) | 6.4 | 3.61 | | Scaling (512-256-512) | 6.4 | 3.6 |
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