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Reversible data hiding in encrypted images based on progressive recovery – 2016

Project Title:

Reversible data hiding in encrypted images based on progressive recovery – 2016

Abstract:

This paper proposes a method of reversible data hiding in encrypted images (RDH-EI) based on progressive recovery. Three parties are involved in the framework, including the content owner, the data-hider, and the recipient. The content owner encrypts the original image using a stream cipher algorithm and uploads a ciphertext to the server. The data-hider on the server divides the encrypted image into three channels and, respectively, embeds different amount of additional bits into each one to generate a marked encrypted image. On the recipient side, additional message can be extracted from the marked encrypted image, and the original image can be recovered without any errors. While most of the traditional methods use one criterion to recover the whole image, we propose to do the recovery by a progressive mechanism. Rate-distortion of the proposed method outperforms state-of-the-art RDH-EI methods.

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