A novel reversible watermarking scheme based on block energy difference for medical images

@article{Gu2012ANR,
  title={A novel reversible watermarking scheme based on block energy difference for medical images},
  author={Qiaolun Gu and Tiegang Gao},
  journal={The 6th International Conference on Soft Computing and Intelligent Systems, and The 13th International Symposium on Advanced Intelligence Systems},
  year={2012},
  pages={232-237}
}
A novel reversible watermark scheme based on block energy difference (BED) for medical image is proposed in this letter. In the proposed scheme, cover image is firstly divided into some no-overlapping blocks, then integer wavelet transform (IWT) is used in every image block, as the energy of every block is different, watermark will be embedded in the low frequency subband of IWT based on BED. The novelty and advantage of the scheme lies in that the scheme achieves nearly automatic division of… CONTINUE READING

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