Abstract
Teleradiology plays a vital role in the medical field, which permits transmitting medical and imaging data over a communication network. It ensures data reliability and provides convenient communication for clinical interpretation and diagnostic purposes. The transmission of this medical data over a network raises the problems of legal, ethical issues, privacy, and copyright authenticity. The copyright protection of medical images is a significant issue in the medical field. Watermarking schemes are used to address these issues. A gray-level or binary image is used as a watermark frequently in color image watermarking schemes. In this paper, the authors propose a novel non-blind medical image watermarking scheme based on 2-D Lifting Wavelet Transform (LWT), Multiresolution Singular Value Decomposition (MSVD), and LU factorization to improve the robustness and authenticity of medical images. In this scheme, multiple color watermarks are embedded into the colored DICOM (Digital Imaging and Communications in Medicine) images obtained from Color Doppler images (DICOM format), and the average results achieved by our proposed scheme is 46.84 db for Peak Signal-to-Noise Ratio (PSNR), 37.46 db for Signal-to-Noise Ratio (SNR), 0.99 for Quality of Image and 0.998 for Normalized Correlation for various image processing attacks. These results make our watermarking technique an ideal candidate for medical image watermarking.
Highlights
Teleradiology allows to transmit radiological images for clinical and health care assistance from remote areas, enabling patients to get a second opinion from specialists worldwide
Based on the challenges referred to above, we highlight the significant contributions of this paper as: (1) A novel non-blind medical image watermarking scheme is developed based on 2-D Lifting Wavelet Transform (LWT), Multiresolution Singular Value Decomposition (MSVD), and LU factorization to improve the robustness and authenticity of medical images
This paper suggests a new watermarking algorithm for color Digital Imaging and Communications in Medicine (DICOM) images based on MSVD, LWT, and LU factorization, including the watermark embedding and extraction processes
Summary
Teleradiology allows to transmit radiological images for clinical and health care assistance from remote areas, enabling patients to get a second opinion from specialists worldwide. It needs to deploy authentication mechanisms like watermarking to secure and authenticate medical images generated using Color Doppler Imaging, X-Ray, PET, MRI, CT Scans, and Neuroimaging Informatics Technology Initiative, etc. The medical healthcare system needs a watermarking scheme for the authentication of these color DICOM images. The proposed watermarking methodology attempts to provide higher security and low complexity for DICOM image watermarking, overcoming the limitations of the highlighted state-of-art contributions in subsequent sections. (1) A novel non-blind medical image watermarking scheme is developed based on 2-D Lifting Wavelet Transform (LWT), Multiresolution Singular Value Decomposition (MSVD), and LU factorization to improve the robustness and authenticity of medical images.
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