A Novel Reversible Data Hiding Scheme using IWT with Reduced and Fixed Book keeping Information

Abstract: In this paper we propose a novel reversible data hiding scheme based on integerwavelet transform. The existing similar schemes contains a significant and variablesize of bookkeeping information leading to reduction in the actual payload capacity ofthe cover image, as well as significant amount of pre-processing is generally requiredto avoid underflow/overflow errors. The proposed scheme tries to resolve the statedproblems and contains a fixed and negligible size of bookkeeping information in theform of location map, as well as there is no pre-processing stage required in theproposed scheme to avoid underflow/overflow problem. Scheme also achievesrelatively higher payload and corresponding PSNR.

Keywords: Reversible data hiding; integer wavelet transform; difference expansion; steganography.