A Region-Based Lossless Watermarking Scheme for Enhancing Security of Medical Data

  title={A Region-Based Lossless Watermarking Scheme for Enhancing Security of Medical Data},
  author={Xiaotao Guo and Tian-ge Zhuang},
  journal={Journal of Digital Imaging},
This paper presents a lossless watermarking scheme in the sense that the original image can be exactly recovered from the watermarked one, with the purpose of verifying the integrity and authenticity of medical images. In addition, the scheme has the capability of not introducing any embedding-induced distortion in the region of interest (ROI) of a medical image. Difference expansion of adjacent pixel values is employed to embed several bits. A region of embedding, which is represented by a… CONTINUE READING
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