A messy watermarking for medical image authentication

Abstract

This paper proposes a messy model based watermarking scheme for the authentication of medical images. The digital fundus images are one particular class of medical images which has been chosen for simulation and analysis of the proposed scheme in this paper. These images are given in TIF format in RGB color space. The proposed scheme dynamically generates the watermark using messy models. And, it is embedded inside the image by expanding intra plane difference between any two color planes of images. It is known as intra-plane difference expanding. The proposed scheme is very sensitive to the jittering, geometrical and various filtering attacks; thereby it modifies around 40% of the watermark for jittering, geometrical attacks and around 45% of the watermark for filtering attacks at an average.