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A novel dual watermarking algorithm is proposed based on the Fractional Fourier Transform (FRFT) and the digital watermarking techniques in this paper. The 0, 1 sequence is mapped into two different random sequences to realize the robust watermarking process. The gray relational analysis method, the easy blocking method and the hierarchical embedding method are used here. Good performance both in...
A novel method for the image encryption based on the Fractional Fourier Transform (FRFT) is proposed in this paper. Different sampling matrixes are introduced to analysis the multiplicity of the FRFT. This property is also used for the design of the encryption algorithm here. Good performance in the experiments shows its efficiency.
novel fragile watermarking algorithm is proposed based on the Fractional Fourier Transform (FRFT) and the blocking method in this paper. Chaotic sequence is converted into a binary 0, 1 sequence to be used as the watermarking information. The blocking method for fragile watermarking algorithm is used to generate the initial value of the chaotic sequence. Good performance in experiments shows its excellent...
A novel binary watermarking algorithm has been proposed based on the Fractional Fourier Transform (FRFT) and the digital watermarking techniques. The 0, 1 sequence are corresponded to two different random sequences here by considering the strong practicability of the binary watermarks and the strong robustness of the sequence watermarks. The good performance in experiments shows the strong robustness...
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