A Novel Reversible Watermarking Based on an Integer Transform

  title={A Novel Reversible Watermarking Based on an Integer Transform},
  author={ShaoWei Weng and Yao Zhao and Jeng-Shyang Pan and Rongrong Ni},
  journal={2007 IEEE International Conference on Image Processing},
  pages={III - 241-III - 244}
A novel reversible data hiding scheme based on an integer transform is presented in this paper. The invertible integer transform exploits the correlations among four pixels in a quad. Data embedding is carried out by expanding the differences between one pixel and each of its three neighboring pixels. However, the high hiding capacity can not be achieved only by difference expansion, so the companding technique is introduced into the embedding process so as to further increase hiding capacity… CONTINUE READING
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