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Traditional watermark embedding schemes inevitably modify the data in a host audio signal and lead to the degradation of the host signal. In this paper, a novel audio zero-watermarking algorithm based on discrete wavelet transform(DWT), discrete cosine transform(DCT), and singular value decomposition(SVD) is presented. The watermark is registered by performing SVD on the coefficients generated through...
A DCT-based digital watermarking by using quotient-embedding scheme with smart arrangement technique is proposed. To increase the hidden capacity while maintaining the robustness of the proposed method, input data are first bundled to a set of 4-octet with a smart arrangement and then embedded in the predetermined low- and middle-frequency coefficients of a DCT block. Simulations show that the mixed...
A simple watermarking scheme based on the discrete cosine transform (DCT) is proposed. To increase the hidden capacity while maintaining the robustness of the proposed method, the authors use quotient-embedding algorithm to hide the secret message in the selected low-frequency coefficients of a DCT block. Simulations show that the stego-images generated by the proposed method do robustness against...
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