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Ultima descărcare din IBN: 2024-02-21 19:29 |
Căutarea după subiecte similare conform CZU |
004.056 (228) |
Информационные технологии. Вычислительная техника. Обработка данных (4156) |
SM ISO690:2012 КОБОЗЕВА, Алла, СОКОЛОВ, Артем. Достаточное условие обеспечения надежности восприятия стеганосообщения в области преобразования Уолша-Адамара. In: Problemele Energeticii Regionale, 2022, nr. 2(54), pp. 84-100. ISSN 1857-0070. DOI: https://doi.org/10.52254/1857-0070.2022.2-54.08 |
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Problemele Energeticii Regionale | ||||||
Numărul 2(54) / 2022 / ISSN 1857-0070 | ||||||
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DOI:https://doi.org/10.52254/1857-0070.2022.2-54.08 | ||||||
CZU: 004.056 | ||||||
Pag. 84-100 | ||||||
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In view of the high compatibility of the Walsh-Hadamard transform to the architecture of modern computing facilities, it is sensible to use it in methods of steganography and steganalysis. Now, there are some efficient steganographic methods that use the Walsh-Hadamard transform do-main for information embedding presented in the literature. It is known that to ensure the reliability of the steganographic message perception, information should be embedded in its high-frequency com-ponents; nevertheless, the issues of the correspondence of the Walsh-Hadamard transformants to the frequency components of the original matrix of the cover image are poorly researched. The purpose of this paper is to develop a formal sufficient condition for ensuring the reliability of perception of ste-ganographic messages in the Walsh-Hadamard transform domain. This purpose was achieved by es-tablishing the relationship between the Walsh-Hadamard transformants and the discrete cosine trans-form transformants, which was theoretically substantiated in two ways, and also experimentally con-firmed. Based on the established relationship between the Walsh-Hadamard transform and the discrete cosine transform, as well as the components of the singular value decomposition of the corresponding matrices, a sufficient condition has been developed to ensure the reliability of the perception of ste-ganographic messages in the Walsh-Hadamard transform domain. The sufficient condition consists in the fact that after embedding of additional information using any steganographic method, those Walsh-Hadamard transformants that correspond to the singular triples of the matrix corresponding to small (smallest) in value singular numbers, should change. |
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Cuvinte-cheie steganographic communication channel, steganographic message perception reliability, digital image, Walsh-Hadamard transform, sequence, discrete cosine transform, singular value decomposition of a matrix, canal de comunicare steganografică, fiabilitatea percepției mesajului steganografic, imagine digitală, transformată Walsh-Adamar, frecvență, transformată cosinus discretă, descompunerea matricei singulare, стеганографический канал связи, надежность восприятия стеганосообщения, цифровое изображение, преобразование Уолша-Адамара, частость, дискретное косинусное преобразование, сингулярное разложение матрицы |
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