Discrete Fourier transform as a basis for steganographic method
Actuality of developing of new steganographic methods doesn’t cause doubts due to the rapid development of information technologies and considerable minuses of existing steganomethods. It is presented a steganographic method based on the embedding of confidential information to the frequency domain...
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| Format: | Article |
| Language: | English |
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Odessa National Polytechnic University
2014-12-01
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| Series: | Trudy Odesskogo Politehničeskogo Universiteta |
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| Online Access: | http://pratsi.opu.ua/articles/show/1125 |
| Summary: | Actuality of developing of new steganographic methods doesn’t cause doubts due to the rapid development of information technologies and considerable minuses of existing steganomethods. It is presented a steganographic method based on the embedding of confidential information to the frequency domain container (digital image in grayscale) in this paper. The transition from the spatial to the frequency domain and vice versa takes place by using a discrete Fourier transform. Matrix of frequency coefficients is constructed to the blocks 2x2 for the original matrix of digital image. By choosing the block of such size it increases not only the carrying capacity compared with the standard partition, but also it leads to non complexity frequency coefficients. Proposed steganographic method allows establishing of authenticity of the image. Further the theoretical results can be used as a basis for the development of a new stable steganographic algorithm. |
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| ISSN: | 2076-2429 2223-3814 |