In this paper,we propose wavelet-based denois-ing attack methods on imagewatermarking in discrete cosine transform(DCT)or discrete Fourier transform(DFT)domain ordiscrete wavelet transform(DWT)domain Wiener filtering ...In this paper,we propose wavelet-based denois-ing attack methods on imagewatermarking in discrete cosine transform(DCT)or discrete Fourier transform(DFT)domain ordiscrete wavelet transform(DWT)domain Wiener filtering based on wavelet transform is performed inapproximation subband to remove DCI or DFT domain watermark,and adaptive wavelet soft thresholdingis employed to remove the watermark resided in detail subbands of DWT domain.展开更多
基金Supported by the National Natural Science Foun-dation of China (90104005,60373087,60473023)
文摘In this paper,we propose wavelet-based denois-ing attack methods on imagewatermarking in discrete cosine transform(DCT)or discrete Fourier transform(DFT)domain ordiscrete wavelet transform(DWT)domain Wiener filtering based on wavelet transform is performed inapproximation subband to remove DCI or DFT domain watermark,and adaptive wavelet soft thresholdingis employed to remove the watermark resided in detail subbands of DWT domain.
