Reproduce “Reversible Region of Non-Interest (RONI) Watermarking for Authentication of DICOM Images” on OpenResearch
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About this paper
Jasni Mohamad Zain, Malcolm Clarke
The authors propose reversible watermarking for ultrasound images, storing a SHA-256 hash in least-significant bits of a zero-valued region outside the diagnostic area. At the receiver, the watermark is extracted, margin bits reset, and hashes compared. A single ultrasound cloning example illustrates the check; hash scope is inconsistent, and reversibility requires the zero-valued margin.
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