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Multipurpose medical image watermarking for effective security solutions.

Rishi Sinhal1, Sachin Sharma2, Irshad Ahmad Ansari1

  • 1Electronics and Communication Engineering, PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur, MP 482005 India.

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Summary
This summary is machine-generated.

This study introduces a multipurpose medical image watermarking scheme for protecting patient data. It ensures copyright, detects tampering, and fully recovers the region of interest (ROI) without needing the original image.

Keywords:
Blind watermarkingMedical image watermarkingOwnership verificationROI recoveryReversibilityTamper localization

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Area of Science:

  • Medical Imaging
  • Digital Watermarking
  • Information Security

Background:

  • Medical images are crucial for diagnosis, but vulnerable to tampering that can lead to misdiagnosis.
  • Protecting the integrity and authenticity of medical images is mandatory to prevent malicious alterations.

Purpose of the Study:

  • To develop a multipurpose medical image watermarking scheme.
  • To provide copyright protection, tamper detection/localization, and self-recovery of the region of interest (ROI).

Main Methods:

  • Compressed ROI recovery data using Lempel-Ziv-Welch (LZW).
  • Embedded robust watermark in a transform domain.
  • Generated SHA-256 hash keys for ROI and RONI regions.
  • Embedded compressed data and hash keys into RONI using LSB replacement for fragile watermarking.

Main Results:

  • Achieved high imperceptibility and robustness.
  • Demonstrated perfect tamper detection and significant localization.
  • Ensured 100% reversibility and ROI self-recovery.
  • The blind nature of the scheme eliminates the need for original image or watermark data.

Conclusions:

  • The proposed scheme offers comprehensive protection for medical images.
  • It effectively safeguards against tampering while ensuring data integrity and recovery.
  • The scheme outperforms existing methods in terms of security and functionality.