A secure steganographic method on wavelet domain of palette-based images

Authors:
Wei Ding;Xiang-Wei Kong;Xin-Gang You;Zi-Ren Wang
Affiliations:
School of Electronic and Information Engineering, Dalian University of Technology, China;School of Electronic and Information Engineering, Dalian University of Technology, China;School of Electronic and Information Engineering, Dalian University of Technology, China;School of Electronic and Information Engineering, Dalian University of Technology, China
Venue:
PCM'04 Proceedings of the 5th Pacific Rim conference on Advances in Multimedia Information Processing - Volume Part III
Year:
2004

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Abstract

This article presents a novel secure steganographic method on wavelet domain of GIF images. Secret information is usually embedded in palettes or indices of GIF images directly by formerly presented steganographic methods. These methods may introduce visible noise and detectable changes of parameters in images. The new method based on integer wavelet transform dispels noise introduced by data-hidding into adjacent pixels. Matrix encoding is also applied in embedding. Both scattering noise and matrix encoding improve the quality of the stego-images and the security of secret communication. Experimental results show the fine security of the proposed method in resisting attacks by χ2 detecting method and Fridrich's detecting method.