Reversible Data Hiding Using Controlled Contrast Enhancement and Integer Wavelet Transform
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Description
Reversible data hiding is a type of data hiding techniques whereby the host image can be recovered exactly. Data hiding are a group of techniques used to put a secure data in a host media (like images) with small deterioration in host and the means to extract the secure data afterwards. For example, steganography can be named. Steganography is one such pro-security innovation in which secret data is embedded in a cover. The rapidly proliferated information and evolution of digital technologies by Information hiding in multimedia data has improved the ease of access to digital information enabling reliable, faster and efficient storage, transfer and processing of digital data and leads to the consequence of making the illegal production and redistribution of digital media easy and undetectable. Hence, it poses a novel challenges for researchers. Reversible data hiding, in which the stago-media can be reversed to the original cover media exactly, has attracted increasing interests from the data hiding community. Being lossless makes this technique suitable for medical and military applications. Difference expansion (DE) is one of the most important techniques which are used for reversible data hiding. This system proposed a new RDH scheme using the controlled contrast enhancement (CCE) and Haar integer wavelet transform (IWT).


