Reserving Room Approach on Reversible Data Hiding before Encryption

Now-a-days peoples give more attention while transmitting secure data. For that Reversible Data Hiding algorithm is mostly preferred since it maintains the property that the original image is recovered from encrypted image and embedded data without analysis into it. But the existing method embeds data by reversibly vacating room from encrypted images, which will further leads to the loss of data at the receiver end. Hence authors propose the method which reserves the room for transmission of data from sender to receiver with existing RDH (Reversible Data Hiding) algorithm and therefore it is very easy for data hider to embed data reversibly in encrypted image. Thus in proposed method data extraction an image recovery parts are free from any errors. Also analysis shows that the proposed method can embed data 10 times as large payloads for same quality image than the previous method can embed.