Robust Digital Image Watermarking Based on Joint DWT-DCT

@article{Amirgholipour2009RobustDI,
  title={Robust Digital Image Watermarking Based on Joint DWT-DCT},
  author={Saeed K. Amirgholipour and Ahmad Reza Naghsh-Nilchi},
  journal={JDCTA},
  year={2009},
  volume={3},
  pages={42-54}
}
In this paper, a new robust digital image watermarking algorithm based on Joint DWT-DCT Transformation is proposed. A binary watermarked logo is scrambled by Arnold cat map and embedded in certain coefficient sets of a 3-level DWT transformed of a host image. Then, DCT transform of each selected DWT sub-band is computed and the PN-sequences of the watermark bits are embedded in the middle frequencies coefficients of the corresponding DCT block. In extraction procedure, the watermarked image… CONTINUE READING

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