This paper presents a three-level RDWT biometric watermarking algorithm to embed the voice biometric MFC coefficients in a color face image of the same individual for increased robustness, security, and accuracy.
The phase congruency model is used to compute the embedding locations, which preserves the facial features from being watermarked and ensures that the face recognition accuracy is not compromised. The proposed watermarking algorithm uses adaptive user-specific watermarking parameters for improved performance. Using face, voice, and multimodal recognition algorithms, and statistical evaluation, the authors show that the proposed RDWT watermarking algorithm is robust to different frequency and geometric attacks and provides the multimodal biometric verification accuracy of 94%. (Published Abstract Provided)
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