Paper Title:
Robust Spread Spectrum Steganography Based on the Nonuniform DCT Characteristic
  Abstract

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, J. Ao, C. B. Ma, "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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$32.00
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