DWT-based reversible information hiding scheme using prediction-error-expansion in multimedia images

Abstract

This article presents an information hiding scheme for Multimedia IoT (MIoT) applications, with particular concern the services where the context of cover multimedia is fully reserved. The proposed scheme develops an algorithm of prediction-error-expansion (PEE) based on prediction-generating-method (PGM) on discrete wavelet transform (DWT) domain. The PGM is applied to generate the predicted image, and then, conceal the message into predicted error that is computed between the original image and predicted image. More and more prediction errors are closed, the higher performance will have. The evidence is verified in the experimental results. The experimental results display the performance in terms of embedding capacity, auxiliary information, and image quality. From the experiments show that our proposed scheme clearly has superior performances than previous works.