Reversible blind data hiding for verifying integrity and authenticating MRI and X-Ray images

Abstract

We present a reversible data hiding technique for digital medical images. The idea is to embed the header of the image or other data in the image itself, pursuing tamper-proofing capabilities and inseparability. In particular, the proposed data hiding technique using Least Significant Bits (LSBs) hides information into the Region of Interest (ROI) and preserves lost information in the Region of Non Interest (RONI) for reversibility purposes. ROI pixels are accessed consecutively or in accordance to a Just Noticeable Distortion (JND) model, while RONI pixels are accessed in a consecutive or pseudo-random order. In the experiments with MRI and X-Ray images, we prove excellent fidelity and 100% reversibility of the ROI.