Watermarking DICOM Images Using Contourlet Transform
Author Information
Author(s): Rahimi Farhad, Rabbani Hossein
Primary Institution: Isfahan University of Medical Sciences
Hypothesis
Can a dual adaptive watermarking scheme in the contourlet domain improve the security and robustness of DICOM images?
Conclusion
The proposed watermarking algorithm is efficient and robust against noise attacks, maintaining high image quality.
Supporting Evidence
- The PSNR values for the proposed method were larger than 64.
- The SSIM index for the proposed method was above 0.997.
- The watermarking method allows extraction without the original image.
Takeaway
This study created a way to hide patient information in medical images without changing the images too much, keeping them safe and clear.
Methodology
The study used a dual watermarking scheme that adapts the embedding strength based on the region of interest in medical images.
Limitations
The method was only tested on CT and MRI images, and further testing on other types of medical images is needed.
Participant Demographics
Twenty brain CT images and twenty brain MRI images were used for testing.
Digital Object Identifier (DOI)
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