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To address copyright protection and content authentication, researchers have proposed various digital watermarking methods. In this paper, an improved, multipurpose method is proposed where the authentication watermark and the robust watermark are embedded in the wavelet transform domain. Through a series of experiment, supportive evidence is provided to demonstrate the proposed method being effective...
In this paper, we propose a fast progressive image transmission method based on wavelet decomposition and vector quantization. The wavelet decomposition provides the useful classified characteristic. In addition, vector quantization (VQ) has the advantages of high compression ratio and coding easiness. Combining these techniques, we further design different VQ coding strategies for the wavelet coefficients...
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