Separable Reversible Data Hiding in Encrypted Images - Final BTech/MTech IEEE Projects in Hyderabad

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ABSTRACT :

npeng Zhang
Abstract—This work proposes a novel scheme for separable reversible
data hiding in encrypted images. In the first phase, a content owner encrypts the original uncompressed image using an encryption key. Then, a
data-hider may compress the least significant bits of the encrypted image
using a data-hiding key to create a sparse space to accommodate some additional data. With an encrypted image containing additional data, if a receiver has the data-hiding key, he can extract the additional data though
he does not know the image content. If the receiver has the encryption key,
he can decrypt the received data to obtain an image similar to the original one, but cannot extract the additional data. If the receiver has both the
data-hiding key and the encryption key, he can extract the additional data
and recover the original content without any error by exploiting the spatial
correlation in natural image when the amount of additional d