Reserve Room based Reversible Data Hiding in digital images

摘要

In Reversible Data Hiding (RDH), original cover can be losslessly restored after the embedded data has been extracted. This work proposes the novel method of Reserving Room before Encryption with traditional RDH algorithm. In the first phase, the content owner embeds the secured data in the reserved room using data hiding key. This modified stegoimage is encrypted using an Encryption key. Both Data hiding key and encryption key are used at the receiver section to restore the original image and data embedded in it. Experimental results show that this proposed method achieves real reversibility, better image quality.