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Attack on Watermarking Method Based on Significant Difference of Wavelet Coefficient Quantization
DOI:10.1109/TMM.2009.2021793.png)
Abstract
En 中文
This letter describes an attack on the recently proposed Watermarking Method Based on Significant Difference of Wavelet Coefficient Quantization by Lin et al. While the method is shown to be robust against many signal processing operations, security of the watermarking scheme under intentional attack exploiting knowledge of the implementation has been neglected. We demonstrate a straightforward attack which retains the fidelity of the image. The method is therefore not suitable for copyright protection applications. Further, we propose a countermeasure which mitigates the shortcoming.
Keywords:
Attack
copyright protection
quantization
watermarking
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