文章基本信息

标题：Secured Image Recovery and Data Extraction Using Reversible Data Hiding
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作者：Usama Abdur Rahman ; C. Anuradha
期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：5
DOI：10.15680/ijircce.2015.0305203
出版社：S&S Publications
摘要：The project involves the technique called reversible data hiding in an encrypted image. Reversible data hiding is the technique to embed an additional message into some cover media. The original cover could be perfectly restored after extraction of the hidden message. This work adopts the technique by embed ding a data into an encrypted image. To carry out this work in a simpler manner we divided the work into modules called Image Encryption, Data Embedding and Data extraction and Image recovery. The image given is first encrypted by a random sequence generated using a encryption key and XOR is performed with the pixels on the given image. After encryption, the data is embedded by partitioning the encrypted image into two blocks. The pixels are de-correlated in the flipped blocks. The original blocks often exhibit smoother than those of flipped blocks. Since border pixels are highly correlated, we adopt the side match technique to concatenate bord ers of the unrecovered block to the recovered block and smoothness calculation is done for the concatenated blocks to extract the data and the original image. The error rate is found to be 0.34% and the proposed work aids better met hod than the earlier met hods for smoothness calculation in blocks and data extraction
关键词：Image Encryption; Reversible Data Hiding.