Research Article

DCT Watermarking Approach for Security Enhancement of Multimodal System

Table 5

Watermark Extraction Error Rate due to Gaussian filtering (7 × 7) attack.

ImageWatermark extraction BER (%)
Proposed methodMethod in [26]Method in [27]

Texture0.16DestroyedDestroyed
cameraman0.12DestroyedDestroyed
India logo0.14DestroyedDestroyed
Bank logo0.13DestroyedDestroyed