Watermarking for integrity, authentication and security of medical imaging
Amine Mestiri, Anis Kricha, Anis Sakly, Abdellatif Mtibaa · 2017
Image watermarking has been generally acknowledged as a pertinent technique for improving authenticity, integrity and data security where medical images are transmitted, stored, retrieved across networks. An improved the quality of remote medical services strictly depends on the ability of the techniques used to ensure ethics and protect the transmitted medical secrets. On the one hand, medical image watermarking must ensure the confidentiality of information. Indeed, private medical data inserted into the image should be imperceptible and can only be retrieved by authorized persons; which prevents any possibility of access, alteration or destruction. On the other hand, several tips must be present in the watermarking scheme in order to implement integrity and to remove any possibility of alteration, using tools that foster the recovery of the initial medical information. Note also that the watermarking scheme used must guarantee the availability of patient data that must be accessible by people adroit at any moment. Finally, we can not forget to mention authentication. Indeed, every information extracted from watermarked image must be identifiable and especially conform with that inserted initially. In this paper, we propose a hybrid system of reversible Digital Watermarking H-GAWM for medical images. The experimental results show that H-GAWM offers a significant improvement in terms of imperceptibility for a desired capacity of the mark by comparing with existing approaches.