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Secure Steganography by n-Dimensional Hypercube Modulo Mapping
LIAO Qi-nan, SUN Xian-bo, PAN Rui-dong
ACTA ELECTRONICA SINICA ›› 2016, Vol. 44 ›› Issue (1) : 160-167.
PDF(2225 KB)
PDF(2225 KB)
Secure Steganography by n-Dimensional Hypercube Modulo Mapping
In order to solve the problems existing in steganography based on modular function, this paper presents n-dimensional hypercube modulo mapping steganographic algorithm.According to modular arithmetic properties, the algorithm defines an n-dimensional modular function which n pixels values are mapped to a data in an-ary notational system, thus the algorithm realizes that each secret digit in an-ary notational system is carried by n cover pixels.The algorithm can get different rates of embedding and visual quality of stego image when we choose different parameter a, and can get better visual quality of stego image when a is even number and we choose bigger parameter n.Theoretical analysis and experimental results show that the proposed algorithm, by comparing with many steganography, not only has the function of these algorithms, but also has a better visual quality of stego image, better security, and stronger practicability.
digital image / modular function / remainder cycle / steganography {{custom_keyword}} /
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