Robust Spread Spectrum Steganography Based on the Nonuniform DCT Characteristic

Abstract:

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In existing image hiding Spread Spectrum (SS) algorithm a reduction of scaling parameter is employed to improve imperceptibility but may lead to an increase in secret information extraction errors. A robust SS steganography, based on the Nonuniform Discrete Cosine Transform (NDCT) characteristic, is proposed. If the secret information, embedded in the NDCT coefficient matrixes of every N×N host image, is a real symmetric matrix, the difference matrix between stego-image and host image is also a real symmetric matrix. Due to the NDCT characteristic above, based on some corresponding change of stego-image, the proposed robust SS algorithm can improve imperceptibility of stego-image and the scaling parameter was not reduced. Simulation results verify the feasibility and validity of the algorithm.

Info:

Periodical:

Advanced Materials Research (Volumes 225-226)

Edited by:

Helen Zhang, Gang Shen and David Jin

Pages:

816-822

DOI:

10.4028/www.scientific.net/AMR.225-226.816

Citation:

W. C. Chen et al., "Robust Spread Spectrum Steganography Based on the Nonuniform DCT Characteristic", Advanced Materials Research, Vols. 225-226, pp. 816-822, 2011

Online since:

April 2011

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Price:

$35.00

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