Didi Rosiyadi

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Keywords: Blind Quantizing value Discrete cosine transform Singular value decomposition E-government Genetic algorithm Pick signal to noise ratio Minimum square error a b s t r a c t An efficient blind copyright protection for e-government document images is proposed through a combination of the discrete cosine transform (DCT) and the singular value(More)
This paper proposes an adaptive watermarking scheme for e-government document images. The adaptive scheme combines the discrete cosine transform (DCT) and the singular value decomposition (SVD) using luminance masking. As a core of masking model in the human visual system (HVS), luminance masking is implemented to improve noise sensitivity. Genetic(More)
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