Research Article
DCT Watermarking Approach for Security Enhancement of Multimodal System
Table 4
Watermark Extraction Bit Error Rate due to median filtering (3 × 3).
| Image | Watermark extraction BER (%) | Proposed method | Method in [26] | Method in [27] |
| Texture | 0 | 0.48 | 1.33 | cameraman | 0.02 | 0.57 | 2.25 | India logo | 0.08 | 0.53 | 1.45 | Bank logo | 0.01 | 0.61 | 3.97 |
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