Abstract
AbstractWith the development of digital image watermarking, digital image watermarking pretreatment technique is paid more and more attention. Digital image watermarking pretreatment is to remove the redundant parts and retain the effective parts which content watermark message. This paper establishes a digital image watermarking model based on wavelet. Digital image watermarking pretreatment and the application of wavelet transform in the digital image pretreatment watermarking are mainly researched in the model. Different methods of digital image watermarking pretreatment are compared which based on the robustness and the invisibility. MATLAB simulate results prove that wavelet is good at digital image watermarking pretreatment and biorthogonal wavelet is better in wavelet bases at the same time.KeywordsDigital image watermarking modelPretreatmentWavelet transform
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