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http://dx.doi.org/10.5909/JBE.2018.23.4.462

Image Steganography and Its Discrimination  

Lee, Jae Hoon (Department of Computer Science, Hanyang University)
Kim, Chanran (Department of Computer Science, Hanyang University)
Lee, Sang Hwa (Institute of New Media and Communications, Seoul National University)
Park, Jong-Il (Department of Computer Science, Hanyang University)
Publication Information
Journal of Broadcast Engineering / v.23, no.4, 2018 , pp. 462-473 More about this Journal
Abstract
Steganography is to hide information in a media data so naturally that the other users can not notice the existence of hidden information. Data encryption focuses on the complex encoding methods of information data in order to make it difficult to decode the information even though the other users notice the existence of information. On the other hand, steganography methods concentrate on natural hiding information into other media. Since the other users do not recognize the existence of hidden information, the information can be better protected. This paper introduces the concept of image steganography that an image information is concealed into another image (cover image), and proposes a new discrimination method of steganography. This paper explains the spatial methods with LSB manipulation and frequency methods using DCT coefficients. Finally, this paper proposes a new discrimination method of image steganography by inspecting that an image information is correctly decoded.
Keywords
Image steganography; LSB manipulation; DCT coefficients; steganography discrimination;
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