A Novel Approach to Reversible Watermarking for Biomedical Imaging, Image Processing and its Qualitative Analysis

Hiding details or redundant information is the most preferred way to reduce data complexity. Watermarking techniques areintroduced to serve the purpose and foundusefulin hiding data or information like numbers, texts and images in digital media formats such as Audio, Video and Image.This paper represents the work carried on one of the fragile watermarking techniques i.e. reversible watermarking.The necessity of improvement in implementation of reversible watermarking technique offers the change in basic algorithm of this technique. The regular criteria in reversible watermarking to calculate threshold value for Prediction Error Expansion (PEE) is adapted with Otsu’s method and a levelheaded enhancement in performance measures like PSNR can be seen.