A Transform Based Effective Robust Watermarking Method for Medical Data Security

Abstract

The evolution of new information technologies has led to the emergence of a wide range of e-health applications. These applications continuously evolve and transfer a significant amount of sensitive data over the Internet. Such applications carry some security risks such as alteration and unauthorized access. A robust and secure watermarking technique is needed to protect medical data from unauthorized access. This paper aims to propose a new robust watermarking approach for protecting sensitive medical data, using DFT transform and QR decomposition. The main idea consists of embedding the watermark DFT coefficients into cover image DFT coefficients of the QR coefficients using a scalling factor to strengthen the robustness and imperceptibility. Simulations results prove that the proposed technique could find a better trade-off between robustness and imperceptibility.

Keywords

• Digital watermarking
• Robust
• Discrete Fourier Transform (DFT)
• QR decomposition
• sensitive data protection

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