Revealing of steganograms with data, which are hidden in transformation domain of digital images
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2014, Vol 0, Issue 57
Abstract
Introduction. The paper is devoted to analysis the correlation and fractal properties of bright¬ness fluctuation the steganograms. The case of multistage embedding the modified stegodata in transformation domain of digital images is considered. Data hiding in transformation domain of digital images. The Gunjal method of message hiding in digital images is investigated. The method is based on usage of Arnold transform for mangling the stegodata. Embedding of modified message is carried out by applying of two-dimensional discrete wavelet transform and block two-dimensional discrete cosine transform. Multifractal detrended fluctuation analysis of digital images. The correlation and fractal characteristics of the digital images noise components are consider. It is shown the advanta¬ges of multifractal detrended fluctuation analysis over classic detrended fluctuation analysis – the representation of signal fluctuation as set of monofractal aggregates with corresponding generalized Hurst exponents. Conclusion. Data hiding in transformation domain of digital images leads to smoothing of spectrum the generalized Hurst exponents and narrowing the multifractal spectrum of fluctuations. It is established that ascertained disclosure features do not depend on degree of container filling.
Authors and Affiliations
D. Progonov, S. Kushch
Keywords
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- EP ID EP308891
- DOI 10.20535/RADAP.2014.57.128-142
- Views 77
- Downloads 0
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