A new region based watermarking scheme for medical images
Fadoua Sabbane, Noura Aherrahrou, Hamid Tairi · 2019
The widespread use of information and communication technologies in Healthcare services such as telemedicine has made it easy to intercept and tamper sensitive medical data when public networks are used. Thus, there is an urgent need of security measures to address the requirements of both safety and privacy of medical information. In such a situation, watermarking has been proposed as one of the most promising techniques to provide security, reliability, and authenticity of medical information. In this paper, we propose a new region based watermarking technique for medical images. The proposed algorithm is based on the polynomial decomposition. We initially introduce the mathematical model of the polynomial decomposition and its properties, which consists of decomposing the medical image on two components: geometrical part and smooth part. Then we provide the necessary algorithms for watermark insertion and extraction. Compared with the state-of-the art methods, experimental results reveal that the proposed algorithm can achieve good results in terms of invisibility, authenticity, confidentiality and robustness of the watermark.