Reversible Data Hiding in Encrypted Images by Reserving Room Before Encryption

Electronics and Telecommunication Engineering

Now a day, more attention is to reversible data hiding (RDH) in encrypted images as well as in audio and video, by using RDH method excellent property that the original image (cover) can be receives as it is recovered after embedded data is extracted also protecting the image content’s confidentiality. All previous methods embedding data into image by reversibly vacating room in the encrypted images, which may be result as some errors on data extraction and/or image restoration. That mean some secrete information is loss in data extraction also degraded quality of image. In this paper, we propose a new method by reserving room before encryption .By using the new RHD method improver’s efficiency of image. The proposed method improves efficiency & quality encrypted image usually used in medical area, aromatic etc. The new Algorithm Used in novel RDH is reducing noise Effect. Furthermore, this novel method can achieve real reversibility, separate data extraction and greatly improvement on the quality of marked decrypted images. The proposed method uses different techniques like Generation of Encrypted Images, Data hiding in encrypted images, data extraction and image recovery, and last but not the least data extraction and image restoration. For getting better results, we have compared the proposed method with the state-of the-art works. The proposed method can embed more than 10 times as large payloads for the same acceptable PSNR (e.g., PSNR = 40 dB) which implies a very good potential for practical applications. With the help of above mentioned techniques, Reversible Data Hiding in encrypted images by reserving room before encryption is possible.

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