Attack on 'Watermarking Method Based on Significant Difference of Wavelet Coefficient Quantization'
Peter Meerwald, Christian Koidl and Andreas Uhl
Transaction on Multimedia, volume 11, number 5, August 2009 (Correspondance)
This paper describes an attack on the recently proposed 'Watermarking Method Based on Significant Difference of Wavelet Coefficient
Quantization' [Lin, 2008]. 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.
Peter Meerwald, firstname.lastname@example.org