Reversible Watermarking Technique for Data Hiding, Accurate Tamper Detection in ROI and Exact Recovery of ROI

Abstract: Medical images are passed away through networks without any noise or disturbances for diagnostic decisions. Patient Details embedded into the medical image and transferred to another location without degradation or no change in actual quality of image. While transferring medical images tampers may be introduced. To avoid tampers this paper propose a block based fragile method water marking technique to verify integrity of ROI, distortion inside ROI, Authentication of ROI, Data hiding and exact recovery of ROI using reversible water marking technique. The medical image can be divided into 3 parts as Region of interest (ROI), region of Non interest (RONI) and Border pixels. The recovery of ROI embedded into RONI. Number of Experiments is conducted in thirty medical images to achieve 100% accuracy with zero loss in ROI.

Keywords: Authentication of ROI, Data hiding, Region of interest (ROI), Region of Non interest (RONI).